This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-13 05:48:43,827 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 05:48:43,892 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 05:48:43,895 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 05:48:43,896 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 05:48:43,927 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 05:48:43,928 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 05:48:43,928 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 05:48:43,928 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 05:48:43,928 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 05:48:43,929 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 05:48:43,929 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 05:48:43,929 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 05:48:43,930 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 05:48:43,930 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 05:48:43,930 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 05:48:43,930 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 05:48:43,931 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 05:48:43,931 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 05:48:43,931 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 05:48:43,931 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 05:48:43,932 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 05:48:43,932 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 05:48:43,932 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 05:48:43,932 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 05:48:43,933 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 05:48:43,933 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 05:48:43,933 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 05:48:43,933 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 05:48:43,934 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 05:48:43,934 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 05:48:43,934 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 05:48:43,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 05:48:43,934 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 05:48:43,935 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 05:48:43,935 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 05:48:43,935 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 05:48:43,935 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 05:48:43,935 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 05:48:43,936 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 05:48:43,936 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 05:48:43,937 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 05:48:43,937 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/certificate-witnesses-artifact/automizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 05:48:44,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 05:48:44,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 05:48:44,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 05:48:44,151 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 05:48:44,151 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 05:48:44,152 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/hard-ll_valuebound5.yml/witness-2.1.yml [2024-09-13 05:48:44,210 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 05:48:44,220 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 05:48:44,221 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c [2024-09-13 05:48:45,490 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 05:48:45,632 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 05:48:45,633 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c [2024-09-13 05:48:45,638 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/d4c684864/17e480ff18e047aa8f4ff2dd86ba1797/FLAGc0e82ad49 [2024-09-13 05:48:45,648 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/d4c684864/17e480ff18e047aa8f4ff2dd86ba1797 [2024-09-13 05:48:45,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 05:48:45,650 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 05:48:45,651 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 05:48:45,651 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 05:48:45,655 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 05:48:45,656 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 05:48:44" (1/2) ... [2024-09-13 05:48:45,656 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@534ad4cb and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:48:45, skipping insertion in model container [2024-09-13 05:48:45,656 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 05:48:44" (1/2) ... [2024-09-13 05:48:45,657 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2e9fd5e0 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:48:45, skipping insertion in model container [2024-09-13 05:48:45,658 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 05:48:45" (2/2) ... [2024-09-13 05:48:45,658 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@534ad4cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:48:45, skipping insertion in model container [2024-09-13 05:48:45,658 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 05:48:45" (2/2) ... [2024-09-13 05:48:45,665 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 05:48:45,666 INFO L1541 ArrayList]: Loop invariant at [L36-L44] (((((((((((0 <= (r + (((__int128) -1 * d) / 2))) && (((A % 4294967296) + d) == (((long long) (B % 4294967296) * 4) + r))) && (1 <= (B % 4294967296))) && ((d % 2) == 0)) && ((A % 4294967296) <= 5)) && (q == 0)) && (p == 4)) && (((A % 4294967296) + (d / 2)) == (r + ((long long) 2 * (B % 4294967296))))) || (((((((((A % 4294967296) == r) && ((((r + ((A / 4294967296) * 4294967296)) + ((__int128) d * 3)) + (25769803776 * (B / 4294967296))) <= (A + ((long long) B * 6)))) && (p == 2)) && (1 <= (B % 4294967296))) && ((d % 2) == 0)) && (q == 0)) && ((B % 4294967296) <= r)) && ((((long long) B * 8) + r) <= ((((__int128) d * 4) + 5) + ((B / 4294967296) * 34359738368))))) || ((((((((A % 4294967296) == r) && ((B % 4294967296) <= 5)) && ((d + ((B / 4294967296) * 4294967296)) == B)) && ((A % 4294967296) <= 5)) && (q == 0)) && (1 <= d)) && (p == 1))) || (((((((p == 8) && (((A % 4294967296) + d) == (((long long) 8 * (B % 4294967296)) + r))) && (1 <= (B % 4294967296))) && (((long long) 8 * (B % 4294967296)) == d)) && (q == 0)) && ((((long long) B * 8) + r) <= ((5 + d) + ((B / 4294967296) * 34359738368)))) && (((long long) (B % 4294967296) * 4) <= r))) [2024-09-13 05:48:45,666 INFO L1541 ArrayList]: Loop invariant at [L46-L58] (((((((((((((((((((A % 4294967296) + d) == (((long long) 6 * (B % 4294967296)) + r)) && (p == 2)) && (((long long) (B % 4294967296) * 4) <= (A % 4294967296))) && (1 <= (B % 4294967296))) && (d <= 2)) && (q == 4)) && ((((long long) 7 * B) + r) <= (((__int128) d + 6) + (30064771072 * (B / 4294967296))))) && (A <= (((r + ((A / 4294967296) * 4294967296)) + ((__int128) d * 2)) + 1))) || ((((((0 <= r) && (((__int128) r + 1) <= d)) && ((d + r) == (A % 4294967296))) && ((r + ((long long) 2 * (B % 4294967296))) == ((A % 4294967296) + d))) && (q == 1)) && (p == 1))) || ((((((((0 <= r) && (((A % 4294967296) + d) == (((long long) 8 * (B % 4294967296)) + r))) && (((A % 4294967296) + (d / 2)) == (((long long) 6 * (B % 4294967296)) + r))) && ((d % 2) == 0)) && (p == 4)) && ((d + r) <= (5 + ((__int128) 4294967296 * ((-1 + d) / 2147483648))))) && (q == 4)) && ((((long long) 7 * B) + r) <= (((__int128) d + 6) + (30064771072 * (B / 4294967296)))))) || (((((((0 <= (r + (((__int128) -1 * d) / 2))) && (((__int128) r + 1) <= d)) && (((A % 4294967296) + d) == (((long long) (B % 4294967296) * 4) + r))) && ((d % 2) == 0)) && (q == 0)) && (p == 4)) && (((A % 4294967296) + (d / 2)) == (r + ((long long) 2 * (B % 4294967296)))))) || ((((((q == 2) && (0 <= r)) && (p == 2)) && (((A % 4294967296) + d) == (((long long) (B % 4294967296) * 4) + r))) && ((A % 4294967296) == (r + ((long long) 2 * (B % 4294967296))))) && (((d + r) + 1) <= ((long long) (B % 4294967296) * 4)))) || (((((((A % 4294967296) == r) && (d == ((long long) 2 * (B % 4294967296)))) && (((__int128) r + 1) <= d)) && (p == 2)) && (q == 0)) && ((B % 4294967296) <= r))) || ((((((q == 2) && ((B % 4294967296) <= 2147483647)) && (((__int128) r + 1) <= (d + (d / 2)))) && (d == (((A % 4294967296) + ((__int128) -1 * r)) / 2))) && ((A % 4294967296) == (r + ((long long) 2 * (B % 4294967296))))) && (p == 1))) || ((((((((r + (B % 4294967296)) + ((__int128) q * (B % 4294967296))) == ((A % 4294967296) + d)) && (((__int128) r + 1) <= (d + (d / 2)))) && ((r + ((long long) 2 * (B % 4294967296))) <= 4294967295)) && ((r + ((__int128) q * (B % 4294967296))) == (A % 4294967296))) && ((d + ((long long) 2 * (B % 4294967296))) <= 4294967295)) && (p == 1))) || (((((A % 4294967296) == r) && ((d + ((B / 4294967296) * 4294967296)) == B)) && (q == 0)) && (p == 1))) || (((((((p == 8) && (((A % 4294967296) + d) == (((long long) 8 * (B % 4294967296)) + r))) && (1 <= (B % 4294967296))) && (((long long) 8 * (B % 4294967296)) == d)) && ((A % 4294967296) <= 5)) && (q == 0)) && (((long long) (B % 4294967296) * 4) <= r))) [2024-09-13 05:48:45,666 INFO L1541 ArrayList]: Function contract at [L14]: requires (\old(cond) != 0), ensures (\old(cond) != 0) [2024-09-13 05:48:45,666 INFO L1541 ArrayList]: Function contract at [L11]: requires null, ensures (\old(cond) != 0) [2024-09-13 05:48:45,679 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 05:48:45,804 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c[538,551] [2024-09-13 05:48:45,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 05:48:45,839 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global Start Parsing Global [2024-09-13 05:48:45,872 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c[538,551] Start Parsing Local Start Parsing Local [2024-09-13 05:48:45,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 05:48:45,978 INFO L204 MainTranslator]: Completed translation [2024-09-13 05:48:45,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:48:45 WrapperNode [2024-09-13 05:48:45,979 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 05:48:45,980 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 05:48:45,980 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 05:48:45,980 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 05:48:45,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:48:45" (1/1) ... [2024-09-13 05:48:45,994 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:48:45" (1/1) ... [2024-09-13 05:48:46,038 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2024-09-13 05:48:46,039 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 05:48:46,039 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 05:48:46,039 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 05:48:46,040 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 05:48:46,049 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:48:45" (1/1) ... [2024-09-13 05:48:46,049 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:48:45" (1/1) ... [2024-09-13 05:48:46,052 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:48:45" (1/1) ... [2024-09-13 05:48:46,058 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure assume_abort_if_not is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-13 05:48:46,058 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:48:45" (1/1) ... [2024-09-13 05:48:46,058 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:48:45" (1/1) ... [2024-09-13 05:48:46,067 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:48:45" (1/1) ... [2024-09-13 05:48:46,070 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:48:45" (1/1) ... [2024-09-13 05:48:46,072 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:48:45" (1/1) ... [2024-09-13 05:48:46,074 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:48:45" (1/1) ... [2024-09-13 05:48:46,078 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 05:48:46,078 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 05:48:46,078 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 05:48:46,079 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 05:48:46,079 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:48:45" (1/1) ... [2024-09-13 05:48:46,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 05:48:46,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:48:46,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-13 05:48:46,104 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-13 05:48:46,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 05:48:46,139 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 05:48:46,139 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 05:48:46,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-13 05:48:46,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 05:48:46,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 05:48:46,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 05:48:46,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 05:48:46,185 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 05:48:46,187 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 05:48:46,506 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-13 05:48:46,523 INFO L? ?]: Removed 42 outVars from TransFormulas that were not future-live. [2024-09-13 05:48:46,523 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 05:48:46,539 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 05:48:46,540 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-13 05:48:46,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 05:48:46 BoogieIcfgContainer [2024-09-13 05:48:46,540 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 05:48:46,542 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 05:48:46,542 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 05:48:46,544 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 05:48:46,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 05:48:44" (1/4) ... [2024-09-13 05:48:46,545 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42a1cf21 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 05:48:46, skipping insertion in model container [2024-09-13 05:48:46,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 05:48:45" (2/4) ... [2024-09-13 05:48:46,545 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42a1cf21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 05:48:46, skipping insertion in model container [2024-09-13 05:48:46,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:48:45" (3/4) ... [2024-09-13 05:48:46,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42a1cf21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 05:48:46, skipping insertion in model container [2024-09-13 05:48:46,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 05:48:46" (4/4) ... [2024-09-13 05:48:46,547 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound5.c [2024-09-13 05:48:46,559 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 05:48:46,559 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-09-13 05:48:46,590 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 05:48:46,595 INFO L336 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=None, 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;@11884fb7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 05:48:46,595 INFO L337 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-09-13 05:48:46,598 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 25 states have (on average 1.56) internal successors, (39), 30 states have internal predecessors, (39), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-13 05:48:46,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-13 05:48:46,603 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:48:46,603 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-13 05:48:46,604 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 05:48:46,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:48:46,611 INFO L85 PathProgramCache]: Analyzing trace with hash 134843102, now seen corresponding path program 1 times [2024-09-13 05:48:46,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:48:46,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789798492] [2024-09-13 05:48:46,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:48:46,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:48:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:46,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:48:46,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:48:46,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789798492] [2024-09-13 05:48:46,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789798492] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:48:46,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:48:46,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 05:48:46,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042679080] [2024-09-13 05:48:46,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:48:46,730 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-13 05:48:46,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:48:46,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-13 05:48:46,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 05:48:46,751 INFO L87 Difference]: Start difference. First operand has 43 states, 25 states have (on average 1.56) internal successors, (39), 30 states have internal predecessors, (39), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:48:46,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:48:46,788 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2024-09-13 05:48:46,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-13 05:48:46,790 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-09-13 05:48:46,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:48:46,794 INFO L225 Difference]: With dead ends: 43 [2024-09-13 05:48:46,794 INFO L226 Difference]: Without dead ends: 41 [2024-09-13 05:48:46,796 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 05:48:46,798 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 05:48:46,798 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:48:46,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-13 05:48:46,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-09-13 05:48:46,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 29 states have internal predecessors, (32), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-13 05:48:46,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2024-09-13 05:48:46,825 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 5 [2024-09-13 05:48:46,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:48:46,825 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2024-09-13 05:48:46,826 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:48:46,826 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2024-09-13 05:48:46,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-13 05:48:46,826 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:48:46,826 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-13 05:48:46,827 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 05:48:46,827 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 05:48:46,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:48:46,827 INFO L85 PathProgramCache]: Analyzing trace with hash 134843164, now seen corresponding path program 1 times [2024-09-13 05:48:46,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:48:46,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260546606] [2024-09-13 05:48:46,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:48:46,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:48:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:46,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:48:46,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:48:46,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260546606] [2024-09-13 05:48:46,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260546606] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:48:46,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:48:46,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 05:48:46,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859744877] [2024-09-13 05:48:46,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:48:46,901 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 05:48:46,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:48:46,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 05:48:46,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-13 05:48:46,902 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:48:46,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:48:46,940 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2024-09-13 05:48:46,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 05:48:46,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-09-13 05:48:46,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:48:46,944 INFO L225 Difference]: With dead ends: 40 [2024-09-13 05:48:46,944 INFO L226 Difference]: Without dead ends: 40 [2024-09-13 05:48:46,944 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-13 05:48:46,945 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 1 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 05:48:46,945 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 121 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:48:46,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-13 05:48:46,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-09-13 05:48:46,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 28 states have internal predecessors, (31), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-13 05:48:46,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2024-09-13 05:48:46,950 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 5 [2024-09-13 05:48:46,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:48:46,950 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2024-09-13 05:48:46,950 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:48:46,950 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2024-09-13 05:48:46,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-13 05:48:46,950 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:48:46,950 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:48:46,951 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 05:48:46,951 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 05:48:46,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:48:46,951 INFO L85 PathProgramCache]: Analyzing trace with hash 363565673, now seen corresponding path program 1 times [2024-09-13 05:48:46,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:48:46,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961548838] [2024-09-13 05:48:46,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:48:46,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:48:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:47,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 05:48:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:47,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 05:48:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:47,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 05:48:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:47,550 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 05:48:47,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:48:47,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961548838] [2024-09-13 05:48:47,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961548838] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:48:47,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:48:47,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-13 05:48:47,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705939659] [2024-09-13 05:48:47,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:48:47,551 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-13 05:48:47,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:48:47,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-13 05:48:47,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-09-13 05:48:47,552 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-13 05:48:47,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:48:47,743 INFO L93 Difference]: Finished difference Result 51 states and 67 transitions. [2024-09-13 05:48:47,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-13 05:48:47,744 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 19 [2024-09-13 05:48:47,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:48:47,744 INFO L225 Difference]: With dead ends: 51 [2024-09-13 05:48:47,744 INFO L226 Difference]: Without dead ends: 51 [2024-09-13 05:48:47,745 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-09-13 05:48:47,745 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 52 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 05:48:47,746 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 113 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 05:48:47,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-13 05:48:47,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-09-13 05:48:47,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 34 states have internal predecessors, (38), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-13 05:48:47,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2024-09-13 05:48:47,755 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 19 [2024-09-13 05:48:47,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:48:47,757 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2024-09-13 05:48:47,757 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-13 05:48:47,757 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2024-09-13 05:48:47,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-13 05:48:47,758 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:48:47,758 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:48:47,759 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-13 05:48:47,759 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 05:48:47,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:48:47,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1764960997, now seen corresponding path program 1 times [2024-09-13 05:48:47,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:48:47,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407967343] [2024-09-13 05:48:47,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:48:47,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:48:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:47,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 05:48:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:47,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 05:48:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:47,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 05:48:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:47,814 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 05:48:47,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:48:47,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407967343] [2024-09-13 05:48:47,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407967343] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:48:47,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:48:47,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 05:48:47,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408457970] [2024-09-13 05:48:47,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:48:47,815 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 05:48:47,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:48:47,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 05:48:47,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:48:47,817 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-13 05:48:47,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:48:47,825 INFO L93 Difference]: Finished difference Result 49 states and 65 transitions. [2024-09-13 05:48:47,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 05:48:47,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2024-09-13 05:48:47,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:48:47,826 INFO L225 Difference]: With dead ends: 49 [2024-09-13 05:48:47,826 INFO L226 Difference]: Without dead ends: 49 [2024-09-13 05:48:47,827 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:48:47,827 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 05:48:47,828 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:48:47,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-13 05:48:47,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-09-13 05:48:47,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 32 states have internal predecessors, (36), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-13 05:48:47,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2024-09-13 05:48:47,838 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 24 [2024-09-13 05:48:47,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:48:47,838 INFO L474 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2024-09-13 05:48:47,838 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-13 05:48:47,838 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2024-09-13 05:48:47,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-13 05:48:47,839 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:48:47,839 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:48:47,839 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-13 05:48:47,839 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 05:48:47,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:48:47,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1764960836, now seen corresponding path program 1 times [2024-09-13 05:48:47,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:48:47,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732822054] [2024-09-13 05:48:47,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:48:47,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:48:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:47,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 05:48:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:47,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 05:48:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:47,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 05:48:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:47,874 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 05:48:47,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:48:47,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732822054] [2024-09-13 05:48:47,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732822054] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:48:47,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:48:47,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 05:48:47,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518806555] [2024-09-13 05:48:47,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:48:47,877 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 05:48:47,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:48:47,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 05:48:47,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:48:47,878 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-13 05:48:47,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:48:47,914 INFO L93 Difference]: Finished difference Result 48 states and 64 transitions. [2024-09-13 05:48:47,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 05:48:47,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2024-09-13 05:48:47,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:48:47,915 INFO L225 Difference]: With dead ends: 48 [2024-09-13 05:48:47,916 INFO L226 Difference]: Without dead ends: 48 [2024-09-13 05:48:47,916 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:48:47,918 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 05:48:47,918 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 68 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:48:47,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-13 05:48:47,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-09-13 05:48:47,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 29 states have (on average 1.206896551724138) internal successors, (35), 31 states have internal predecessors, (35), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-13 05:48:47,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 63 transitions. [2024-09-13 05:48:47,922 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 63 transitions. Word has length 24 [2024-09-13 05:48:47,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:48:47,922 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 63 transitions. [2024-09-13 05:48:47,922 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-13 05:48:47,922 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 63 transitions. [2024-09-13 05:48:47,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-13 05:48:47,923 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:48:47,925 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:48:47,925 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-13 05:48:47,926 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 05:48:47,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:48:47,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1154352905, now seen corresponding path program 1 times [2024-09-13 05:48:47,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:48:47,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157005039] [2024-09-13 05:48:47,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:48:47,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:48:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:48,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 05:48:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:48,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 05:48:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:48,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 05:48:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:48,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-13 05:48:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:48,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-13 05:48:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:48,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-13 05:48:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:48,457 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-13 05:48:48,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:48:48,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157005039] [2024-09-13 05:48:48,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157005039] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:48:48,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605746709] [2024-09-13 05:48:48,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:48:48,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:48:48,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:48:48,461 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:48:48,466 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 05:48:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:48,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-13 05:48:48,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:48:48,779 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-13 05:48:48,779 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:48:49,336 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-13 05:48:49,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605746709] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 05:48:49,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 05:48:49,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-09-13 05:48:49,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597030221] [2024-09-13 05:48:49,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 05:48:49,337 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-13 05:48:49,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:48:49,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-13 05:48:49,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-09-13 05:48:49,337 INFO L87 Difference]: Start difference. First operand 48 states and 63 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-13 05:48:49,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:48:49,679 INFO L93 Difference]: Finished difference Result 73 states and 106 transitions. [2024-09-13 05:48:49,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-13 05:48:49,680 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 37 [2024-09-13 05:48:49,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:48:49,681 INFO L225 Difference]: With dead ends: 73 [2024-09-13 05:48:49,681 INFO L226 Difference]: Without dead ends: 73 [2024-09-13 05:48:49,681 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 80 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-09-13 05:48:49,682 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 19 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 05:48:49,682 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 140 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 05:48:49,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-09-13 05:48:49,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 60. [2024-09-13 05:48:49,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 38 states have internal predecessors, (44), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-13 05:48:49,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 82 transitions. [2024-09-13 05:48:49,687 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 82 transitions. Word has length 37 [2024-09-13 05:48:49,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:48:49,687 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 82 transitions. [2024-09-13 05:48:49,687 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-13 05:48:49,687 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 82 transitions. [2024-09-13 05:48:49,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-13 05:48:49,688 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:48:49,688 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-09-13 05:48:49,706 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-13 05:48:49,890 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-13 05:48:49,890 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 05:48:49,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:48:49,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1515868503, now seen corresponding path program 1 times [2024-09-13 05:48:49,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:48:49,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486195022] [2024-09-13 05:48:49,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:48:49,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:48:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 05:48:49,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [112457660] [2024-09-13 05:48:49,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:48:49,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:48:49,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:48:49,919 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:48:49,923 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 05:48:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:49,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-13 05:48:49,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:48:50,028 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-09-13 05:48:50,028 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 05:48:50,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:48:50,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486195022] [2024-09-13 05:48:50,029 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 05:48:50,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112457660] [2024-09-13 05:48:50,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112457660] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:48:50,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:48:50,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 05:48:50,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565490867] [2024-09-13 05:48:50,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:48:50,030 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 05:48:50,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:48:50,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 05:48:50,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:48:50,030 INFO L87 Difference]: Start difference. First operand 60 states and 82 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-13 05:48:50,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:48:50,070 INFO L93 Difference]: Finished difference Result 68 states and 95 transitions. [2024-09-13 05:48:50,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 05:48:50,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2024-09-13 05:48:50,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:48:50,071 INFO L225 Difference]: With dead ends: 68 [2024-09-13 05:48:50,072 INFO L226 Difference]: Without dead ends: 68 [2024-09-13 05:48:50,072 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:48:50,072 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 05:48:50,072 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 62 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:48:50,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-13 05:48:50,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2024-09-13 05:48:50,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 41 states have internal predecessors, (50), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-13 05:48:50,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 94 transitions. [2024-09-13 05:48:50,080 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 94 transitions. Word has length 50 [2024-09-13 05:48:50,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:48:50,080 INFO L474 AbstractCegarLoop]: Abstraction has 65 states and 94 transitions. [2024-09-13 05:48:50,080 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-13 05:48:50,080 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 94 transitions. [2024-09-13 05:48:50,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-13 05:48:50,084 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:48:50,084 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2024-09-13 05:48:50,099 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 05:48:50,284 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-13 05:48:50,285 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 05:48:50,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:48:50,286 INFO L85 PathProgramCache]: Analyzing trace with hash 2018739730, now seen corresponding path program 1 times [2024-09-13 05:48:50,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:48:50,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923721155] [2024-09-13 05:48:50,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:48:50,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:48:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:50,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 05:48:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:50,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 05:48:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:50,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 05:48:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:50,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-13 05:48:50,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:50,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-13 05:48:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:50,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-13 05:48:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:50,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 05:48:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:50,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-13 05:48:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:50,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-13 05:48:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:50,391 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-09-13 05:48:50,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:48:50,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923721155] [2024-09-13 05:48:50,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923721155] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:48:50,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:48:50,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 05:48:50,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788820423] [2024-09-13 05:48:50,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:48:50,392 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 05:48:50,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:48:50,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 05:48:50,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:48:50,394 INFO L87 Difference]: Start difference. First operand 65 states and 94 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-09-13 05:48:50,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:48:50,435 INFO L93 Difference]: Finished difference Result 72 states and 103 transitions. [2024-09-13 05:48:50,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 05:48:50,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 55 [2024-09-13 05:48:50,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:48:50,437 INFO L225 Difference]: With dead ends: 72 [2024-09-13 05:48:50,438 INFO L226 Difference]: Without dead ends: 65 [2024-09-13 05:48:50,438 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:48:50,440 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 05:48:50,441 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:48:50,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-09-13 05:48:50,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-09-13 05:48:50,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 41 states have internal predecessors, (49), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-13 05:48:50,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 93 transitions. [2024-09-13 05:48:50,448 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 93 transitions. Word has length 55 [2024-09-13 05:48:50,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:48:50,448 INFO L474 AbstractCegarLoop]: Abstraction has 65 states and 93 transitions. [2024-09-13 05:48:50,449 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-09-13 05:48:50,449 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 93 transitions. [2024-09-13 05:48:50,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-13 05:48:50,450 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:48:50,450 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:48:50,450 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-09-13 05:48:50,450 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 05:48:50,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:48:50,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1118640133, now seen corresponding path program 2 times [2024-09-13 05:48:50,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:48:50,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423491453] [2024-09-13 05:48:50,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:48:50,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:48:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:51,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 05:48:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:51,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 05:48:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:51,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 05:48:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:51,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-13 05:48:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:51,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-13 05:48:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:51,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-13 05:48:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:51,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 05:48:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:51,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-13 05:48:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:51,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-13 05:48:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:51,206 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-09-13 05:48:51,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:48:51,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423491453] [2024-09-13 05:48:51,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423491453] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:48:51,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608505613] [2024-09-13 05:48:51,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 05:48:51,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:48:51,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:48:51,209 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:48:51,210 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 05:48:51,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 05:48:51,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 05:48:51,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-13 05:48:51,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:48:51,656 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-09-13 05:48:51,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:48:52,318 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-09-13 05:48:52,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608505613] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 05:48:52,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 05:48:52,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-09-13 05:48:52,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426636939] [2024-09-13 05:48:52,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 05:48:52,319 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-13 05:48:52,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:48:52,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-13 05:48:52,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-09-13 05:48:52,320 INFO L87 Difference]: Start difference. First operand 65 states and 93 transitions. Second operand has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 7 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2024-09-13 05:48:52,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:48:52,999 INFO L93 Difference]: Finished difference Result 104 states and 159 transitions. [2024-09-13 05:48:52,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-13 05:48:53,000 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 7 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) Word has length 55 [2024-09-13 05:48:53,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:48:53,001 INFO L225 Difference]: With dead ends: 104 [2024-09-13 05:48:53,001 INFO L226 Difference]: Without dead ends: 104 [2024-09-13 05:48:53,001 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2024-09-13 05:48:53,001 INFO L434 NwaCegarLoop]: 69 mSDtfsCounter, 37 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-13 05:48:53,001 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 344 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-13 05:48:53,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-09-13 05:48:53,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 84. [2024-09-13 05:48:53,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 50 states have (on average 1.26) internal successors, (63), 52 states have internal predecessors, (63), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-13 05:48:53,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 123 transitions. [2024-09-13 05:48:53,007 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 123 transitions. Word has length 55 [2024-09-13 05:48:53,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:48:53,007 INFO L474 AbstractCegarLoop]: Abstraction has 84 states and 123 transitions. [2024-09-13 05:48:53,007 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 7 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2024-09-13 05:48:53,007 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 123 transitions. [2024-09-13 05:48:53,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-09-13 05:48:53,008 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:48:53,008 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:48:53,021 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-13 05:48:53,211 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-09-13 05:48:53,212 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 05:48:53,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:48:53,212 INFO L85 PathProgramCache]: Analyzing trace with hash -550970448, now seen corresponding path program 1 times [2024-09-13 05:48:53,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:48:53,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673785876] [2024-09-13 05:48:53,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:48:53,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:48:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:53,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 05:48:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:53,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 05:48:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:53,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 05:48:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:53,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-13 05:48:53,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:53,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-13 05:48:53,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:53,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-13 05:48:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:53,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 05:48:53,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:53,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-13 05:48:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:54,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-13 05:48:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:54,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-13 05:48:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:54,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-13 05:48:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:54,047 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-09-13 05:48:54,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:48:54,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673785876] [2024-09-13 05:48:54,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673785876] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:48:54,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113154600] [2024-09-13 05:48:54,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:48:54,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:48:54,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:48:54,048 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:48:54,050 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 05:48:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:54,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-13 05:48:54,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:48:54,718 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-09-13 05:48:54,719 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:48:55,671 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-09-13 05:48:55,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113154600] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 05:48:55,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 05:48:55,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-09-13 05:48:55,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132467041] [2024-09-13 05:48:55,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 05:48:55,672 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-13 05:48:55,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:48:55,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-13 05:48:55,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2024-09-13 05:48:55,673 INFO L87 Difference]: Start difference. First operand 84 states and 123 transitions. Second operand has 17 states, 16 states have (on average 2.4375) internal successors, (39), 17 states have internal predecessors, (39), 9 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2024-09-13 05:48:56,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:48:56,001 INFO L93 Difference]: Finished difference Result 97 states and 143 transitions. [2024-09-13 05:48:56,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-13 05:48:56,002 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.4375) internal successors, (39), 17 states have internal predecessors, (39), 9 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) Word has length 69 [2024-09-13 05:48:56,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:48:56,002 INFO L225 Difference]: With dead ends: 97 [2024-09-13 05:48:56,003 INFO L226 Difference]: Without dead ends: 97 [2024-09-13 05:48:56,003 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 149 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2024-09-13 05:48:56,003 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 4 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 05:48:56,006 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 226 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 05:48:56,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-09-13 05:48:56,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 94. [2024-09-13 05:48:56,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 58 states have internal predecessors, (69), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-13 05:48:56,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 137 transitions. [2024-09-13 05:48:56,013 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 137 transitions. Word has length 69 [2024-09-13 05:48:56,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:48:56,013 INFO L474 AbstractCegarLoop]: Abstraction has 94 states and 137 transitions. [2024-09-13 05:48:56,013 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.4375) internal successors, (39), 17 states have internal predecessors, (39), 9 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2024-09-13 05:48:56,013 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 137 transitions. [2024-09-13 05:48:56,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-09-13 05:48:56,014 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:48:56,014 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:48:56,029 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-13 05:48:56,214 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:48:56,215 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 05:48:56,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:48:56,215 INFO L85 PathProgramCache]: Analyzing trace with hash -493891693, now seen corresponding path program 3 times [2024-09-13 05:48:56,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:48:56,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070791141] [2024-09-13 05:48:56,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:48:56,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:48:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:56,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 05:48:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:56,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 05:48:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:56,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 05:48:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:56,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-13 05:48:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:56,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-13 05:48:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:56,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-13 05:48:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:56,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 05:48:56,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:56,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-13 05:48:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:56,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-13 05:48:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:56,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-13 05:48:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:56,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-13 05:48:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:56,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-13 05:48:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:56,609 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-09-13 05:48:56,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:48:56,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070791141] [2024-09-13 05:48:56,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070791141] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:48:56,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238635665] [2024-09-13 05:48:56,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 05:48:56,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:48:56,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:48:56,611 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:48:56,612 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 05:48:56,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-13 05:48:56,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 05:48:56,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-13 05:48:56,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:48:57,458 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-09-13 05:48:57,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:48:58,368 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-09-13 05:48:58,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238635665] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 05:48:58,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-13 05:48:58,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 8] total 17 [2024-09-13 05:48:58,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635544537] [2024-09-13 05:48:58,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:48:58,369 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-13 05:48:58,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:48:58,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-13 05:48:58,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-09-13 05:48:58,369 INFO L87 Difference]: Start difference. First operand 94 states and 137 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2024-09-13 05:48:58,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:48:58,925 INFO L93 Difference]: Finished difference Result 114 states and 178 transitions. [2024-09-13 05:48:58,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 05:48:58,926 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 73 [2024-09-13 05:48:58,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:48:58,927 INFO L225 Difference]: With dead ends: 114 [2024-09-13 05:48:58,927 INFO L226 Difference]: Without dead ends: 114 [2024-09-13 05:48:58,927 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 158 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2024-09-13 05:48:58,927 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 19 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-13 05:48:58,928 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 149 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-13 05:48:58,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-09-13 05:48:58,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 97. [2024-09-13 05:48:58,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 59 states have internal predecessors, (71), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-13 05:48:58,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 143 transitions. [2024-09-13 05:48:58,932 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 143 transitions. Word has length 73 [2024-09-13 05:48:58,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:48:58,933 INFO L474 AbstractCegarLoop]: Abstraction has 97 states and 143 transitions. [2024-09-13 05:48:58,933 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2024-09-13 05:48:58,933 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 143 transitions. [2024-09-13 05:48:58,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-09-13 05:48:58,933 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:48:58,933 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 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] [2024-09-13 05:48:58,945 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-13 05:48:59,134 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-13 05:48:59,134 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 05:48:59,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:48:59,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1381978582, now seen corresponding path program 1 times [2024-09-13 05:48:59,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:48:59,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373713211] [2024-09-13 05:48:59,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:48:59,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:48:59,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 05:48:59,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1680882477] [2024-09-13 05:48:59,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:48:59,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:48:59,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:48:59,191 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:48:59,192 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-13 05:48:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:48:59,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-13 05:48:59,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:48:59,340 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-09-13 05:48:59,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:48:59,465 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-09-13 05:48:59,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:48:59,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373713211] [2024-09-13 05:48:59,465 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 05:48:59,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680882477] [2024-09-13 05:48:59,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680882477] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 05:48:59,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 05:48:59,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-09-13 05:48:59,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829088957] [2024-09-13 05:48:59,466 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 05:48:59,466 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-13 05:48:59,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:48:59,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-13 05:48:59,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-09-13 05:48:59,466 INFO L87 Difference]: Start difference. First operand 97 states and 143 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-13 05:48:59,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:48:59,577 INFO L93 Difference]: Finished difference Result 106 states and 157 transitions. [2024-09-13 05:48:59,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 05:48:59,578 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 82 [2024-09-13 05:48:59,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:48:59,579 INFO L225 Difference]: With dead ends: 106 [2024-09-13 05:48:59,579 INFO L226 Difference]: Without dead ends: 106 [2024-09-13 05:48:59,579 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-09-13 05:48:59,579 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 05:48:59,579 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 107 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 05:48:59,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-09-13 05:48:59,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 90. [2024-09-13 05:48:59,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 54 states have (on average 1.2407407407407407) internal successors, (67), 54 states have internal predecessors, (67), 33 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-13 05:48:59,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 133 transitions. [2024-09-13 05:48:59,587 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 133 transitions. Word has length 82 [2024-09-13 05:48:59,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:48:59,587 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 133 transitions. [2024-09-13 05:48:59,587 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-13 05:48:59,591 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 133 transitions. [2024-09-13 05:48:59,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-09-13 05:48:59,592 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:48:59,592 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 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] [2024-09-13 05:48:59,610 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-13 05:48:59,792 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-13 05:48:59,793 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 05:48:59,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:48:59,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1551961905, now seen corresponding path program 1 times [2024-09-13 05:48:59,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:48:59,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280236233] [2024-09-13 05:48:59,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:48:59,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:48:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:00,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 05:49:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:00,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 05:49:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:00,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 05:49:00,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:00,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-13 05:49:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:00,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-13 05:49:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:00,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-13 05:49:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:00,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 05:49:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:00,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-13 05:49:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:00,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-13 05:49:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:00,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-13 05:49:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:00,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-13 05:49:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:00,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-13 05:49:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:00,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-13 05:49:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:00,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-13 05:49:00,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:00,211 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-09-13 05:49:00,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:49:00,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280236233] [2024-09-13 05:49:00,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280236233] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:49:00,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755705420] [2024-09-13 05:49:00,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:49:00,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:49:00,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:49:00,215 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:49:00,223 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-13 05:49:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:00,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-13 05:49:00,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:49:00,402 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-09-13 05:49:00,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:49:00,690 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-09-13 05:49:00,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755705420] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 05:49:00,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 05:49:00,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-09-13 05:49:00,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237709049] [2024-09-13 05:49:00,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 05:49:00,691 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-13 05:49:00,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:49:00,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-13 05:49:00,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-09-13 05:49:00,692 INFO L87 Difference]: Start difference. First operand 90 states and 133 transitions. Second operand has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 10 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 10 states have call predecessors, (33), 10 states have call successors, (33) [2024-09-13 05:49:00,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:49:00,834 INFO L93 Difference]: Finished difference Result 97 states and 142 transitions. [2024-09-13 05:49:00,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 05:49:00,835 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 10 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 10 states have call predecessors, (33), 10 states have call successors, (33) Word has length 87 [2024-09-13 05:49:00,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:49:00,836 INFO L225 Difference]: With dead ends: 97 [2024-09-13 05:49:00,836 INFO L226 Difference]: Without dead ends: 84 [2024-09-13 05:49:00,836 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 193 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2024-09-13 05:49:00,836 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 7 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 05:49:00,836 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 142 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 05:49:00,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-09-13 05:49:00,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-09-13 05:49:00,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 50 states have (on average 1.24) internal successors, (62), 50 states have internal predecessors, (62), 31 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-13 05:49:00,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 124 transitions. [2024-09-13 05:49:00,846 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 124 transitions. Word has length 87 [2024-09-13 05:49:00,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:49:00,847 INFO L474 AbstractCegarLoop]: Abstraction has 84 states and 124 transitions. [2024-09-13 05:49:00,847 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 10 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 10 states have call predecessors, (33), 10 states have call successors, (33) [2024-09-13 05:49:00,847 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 124 transitions. [2024-09-13 05:49:00,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-09-13 05:49:00,848 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:49:00,849 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:49:00,865 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-13 05:49:01,049 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:49:01,050 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 05:49:01,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:49:01,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1137425730, now seen corresponding path program 2 times [2024-09-13 05:49:01,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:49:01,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652678904] [2024-09-13 05:49:01,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:49:01,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:49:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:01,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 05:49:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:01,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 05:49:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:01,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 05:49:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:01,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-13 05:49:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:01,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-13 05:49:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:01,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-13 05:49:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:01,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 05:49:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:01,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-13 05:49:01,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:01,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-13 05:49:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:01,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-13 05:49:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:01,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-13 05:49:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:01,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-13 05:49:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:01,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-13 05:49:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:01,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-13 05:49:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:02,009 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-09-13 05:49:02,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:49:02,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652678904] [2024-09-13 05:49:02,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652678904] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:49:02,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032444775] [2024-09-13 05:49:02,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 05:49:02,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:49:02,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:49:02,012 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:49:02,014 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-13 05:49:02,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 05:49:02,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 05:49:02,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-13 05:49:02,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:49:02,632 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-09-13 05:49:02,632 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:49:03,975 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-09-13 05:49:03,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032444775] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 05:49:03,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 05:49:03,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 22 [2024-09-13 05:49:03,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777163397] [2024-09-13 05:49:03,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 05:49:03,976 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-13 05:49:03,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:49:03,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-13 05:49:03,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2024-09-13 05:49:03,977 INFO L87 Difference]: Start difference. First operand 84 states and 124 transitions. Second operand has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 23 states have internal predecessors, (52), 13 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 13 states have call predecessors, (36), 13 states have call successors, (36) [2024-09-13 05:49:05,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:49:05,082 INFO L93 Difference]: Finished difference Result 102 states and 160 transitions. [2024-09-13 05:49:05,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-13 05:49:05,090 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 23 states have internal predecessors, (52), 13 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 13 states have call predecessors, (36), 13 states have call successors, (36) Word has length 87 [2024-09-13 05:49:05,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:49:05,092 INFO L225 Difference]: With dead ends: 102 [2024-09-13 05:49:05,093 INFO L226 Difference]: Without dead ends: 102 [2024-09-13 05:49:05,093 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2024-09-13 05:49:05,093 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 31 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-13 05:49:05,094 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 371 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-13 05:49:05,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-09-13 05:49:05,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 85. [2024-09-13 05:49:05,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 53 states have (on average 1.2452830188679245) internal successors, (66), 51 states have internal predecessors, (66), 31 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-13 05:49:05,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 128 transitions. [2024-09-13 05:49:05,099 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 128 transitions. Word has length 87 [2024-09-13 05:49:05,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:49:05,099 INFO L474 AbstractCegarLoop]: Abstraction has 85 states and 128 transitions. [2024-09-13 05:49:05,099 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 23 states have internal predecessors, (52), 13 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 13 states have call predecessors, (36), 13 states have call successors, (36) [2024-09-13 05:49:05,099 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 128 transitions. [2024-09-13 05:49:05,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-09-13 05:49:05,100 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:49:05,100 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:49:05,121 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-13 05:49:05,300 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:49:05,300 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 05:49:05,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:49:05,301 INFO L85 PathProgramCache]: Analyzing trace with hash -296419461, now seen corresponding path program 1 times [2024-09-13 05:49:05,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:49:05,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267645348] [2024-09-13 05:49:05,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:49:05,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:49:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:05,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 05:49:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:05,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 05:49:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:05,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 05:49:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:05,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-13 05:49:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:05,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-13 05:49:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:05,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-13 05:49:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:05,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 05:49:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:05,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-13 05:49:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:05,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-13 05:49:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:05,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-13 05:49:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:05,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-13 05:49:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:05,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-13 05:49:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:05,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-13 05:49:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:05,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-13 05:49:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:05,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-13 05:49:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:05,850 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-13 05:49:05,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:49:05,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267645348] [2024-09-13 05:49:05,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267645348] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:49:05,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961501317] [2024-09-13 05:49:05,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:49:05,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:49:05,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:49:05,852 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:49:05,853 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-13 05:49:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:05,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-13 05:49:05,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:49:06,387 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-13 05:49:06,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:49:07,037 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-13 05:49:07,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961501317] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 05:49:07,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 05:49:07,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2024-09-13 05:49:07,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836360572] [2024-09-13 05:49:07,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 05:49:07,039 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-13 05:49:07,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:49:07,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-13 05:49:07,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-09-13 05:49:07,040 INFO L87 Difference]: Start difference. First operand 85 states and 128 transitions. Second operand has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 12 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2024-09-13 05:49:07,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:49:07,472 INFO L93 Difference]: Finished difference Result 87 states and 129 transitions. [2024-09-13 05:49:07,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-13 05:49:07,472 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 12 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) Word has length 91 [2024-09-13 05:49:07,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:49:07,473 INFO L225 Difference]: With dead ends: 87 [2024-09-13 05:49:07,473 INFO L226 Difference]: Without dead ends: 87 [2024-09-13 05:49:07,473 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 200 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2024-09-13 05:49:07,474 INFO L434 NwaCegarLoop]: 61 mSDtfsCounter, 21 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 05:49:07,474 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 342 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 05:49:07,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-09-13 05:49:07,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 74. [2024-09-13 05:49:07,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 46 states have (on average 1.173913043478261) internal successors, (54), 45 states have internal predecessors, (54), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-13 05:49:07,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 106 transitions. [2024-09-13 05:49:07,476 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 106 transitions. Word has length 91 [2024-09-13 05:49:07,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:49:07,477 INFO L474 AbstractCegarLoop]: Abstraction has 74 states and 106 transitions. [2024-09-13 05:49:07,477 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 12 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2024-09-13 05:49:07,477 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 106 transitions. [2024-09-13 05:49:07,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-09-13 05:49:07,478 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:49:07,478 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:49:07,490 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-13 05:49:07,678 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-13 05:49:07,678 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 05:49:07,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:49:07,679 INFO L85 PathProgramCache]: Analyzing trace with hash -436202417, now seen corresponding path program 3 times [2024-09-13 05:49:07,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:49:07,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519593378] [2024-09-13 05:49:07,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:49:07,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:49:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 05:49:07,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1799490099] [2024-09-13 05:49:07,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 05:49:07,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:49:07,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:49:07,780 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:49:07,781 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-13 05:49:07,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-13 05:49:07,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 05:49:07,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-13 05:49:07,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:49:08,509 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-09-13 05:49:08,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:49:11,294 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-09-13 05:49:11,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:49:11,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519593378] [2024-09-13 05:49:11,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 05:49:11,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799490099] [2024-09-13 05:49:11,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799490099] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 05:49:11,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 05:49:11,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 16 [2024-09-13 05:49:11,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035727378] [2024-09-13 05:49:11,295 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 05:49:11,295 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-13 05:49:11,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:49:11,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-13 05:49:11,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2024-09-13 05:49:11,298 INFO L87 Difference]: Start difference. First operand 74 states and 106 transitions. Second operand has 17 states, 16 states have (on average 2.875) internal successors, (46), 17 states have internal predecessors, (46), 8 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2024-09-13 05:49:13,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:49:13,624 INFO L93 Difference]: Finished difference Result 93 states and 133 transitions. [2024-09-13 05:49:13,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-13 05:49:13,624 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 17 states have internal predecessors, (46), 8 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) Word has length 101 [2024-09-13 05:49:13,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:49:13,625 INFO L225 Difference]: With dead ends: 93 [2024-09-13 05:49:13,625 INFO L226 Difference]: Without dead ends: 93 [2024-09-13 05:49:13,625 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=185, Invalid=465, Unknown=0, NotChecked=0, Total=650 [2024-09-13 05:49:13,625 INFO L434 NwaCegarLoop]: 56 mSDtfsCounter, 26 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-13 05:49:13,626 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 250 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-13 05:49:13,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-09-13 05:49:13,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 79. [2024-09-13 05:49:13,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 49 states have (on average 1.163265306122449) internal successors, (57), 48 states have internal predecessors, (57), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-13 05:49:13,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 113 transitions. [2024-09-13 05:49:13,629 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 113 transitions. Word has length 101 [2024-09-13 05:49:13,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:49:13,629 INFO L474 AbstractCegarLoop]: Abstraction has 79 states and 113 transitions. [2024-09-13 05:49:13,629 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 17 states have internal predecessors, (46), 8 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2024-09-13 05:49:13,629 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 113 transitions. [2024-09-13 05:49:13,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-09-13 05:49:13,630 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:49:13,630 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:49:13,636 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-13 05:49:13,834 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-13 05:49:13,834 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 05:49:13,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:49:13,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1495614028, now seen corresponding path program 4 times [2024-09-13 05:49:13,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:49:13,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117402177] [2024-09-13 05:49:13,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:49:13,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:49:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:15,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 05:49:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:15,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 05:49:15,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:15,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 05:49:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:15,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-13 05:49:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:15,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-13 05:49:15,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:15,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-13 05:49:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:15,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 05:49:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:15,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-13 05:49:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:15,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-13 05:49:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:15,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-13 05:49:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:15,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-13 05:49:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:15,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-13 05:49:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:15,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-13 05:49:15,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:15,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-13 05:49:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:15,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-13 05:49:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:15,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-13 05:49:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:15,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-13 05:49:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:15,542 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-09-13 05:49:15,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:49:15,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117402177] [2024-09-13 05:49:15,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117402177] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:49:15,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483017983] [2024-09-13 05:49:15,542 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 05:49:15,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:49:15,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:49:15,544 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:49:15,545 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-13 05:49:15,613 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 05:49:15,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 05:49:15,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-13 05:49:15,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:49:16,336 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-09-13 05:49:16,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:49:18,261 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-09-13 05:49:18,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483017983] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 05:49:18,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 05:49:18,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 20 [2024-09-13 05:49:18,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488723986] [2024-09-13 05:49:18,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 05:49:18,262 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-13 05:49:18,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:49:18,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-13 05:49:18,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2024-09-13 05:49:18,263 INFO L87 Difference]: Start difference. First operand 79 states and 113 transitions. Second operand has 21 states, 20 states have (on average 2.65) internal successors, (53), 21 states have internal predecessors, (53), 13 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 13 states have call predecessors, (40), 13 states have call successors, (40) [2024-09-13 05:49:18,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:49:18,901 INFO L93 Difference]: Finished difference Result 92 states and 132 transitions. [2024-09-13 05:49:18,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-13 05:49:18,901 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 21 states have internal predecessors, (53), 13 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 13 states have call predecessors, (40), 13 states have call successors, (40) Word has length 105 [2024-09-13 05:49:18,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:49:18,902 INFO L225 Difference]: With dead ends: 92 [2024-09-13 05:49:18,902 INFO L226 Difference]: Without dead ends: 92 [2024-09-13 05:49:18,902 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 229 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2024-09-13 05:49:18,903 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 22 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-13 05:49:18,903 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 418 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-13 05:49:18,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-09-13 05:49:18,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 84. [2024-09-13 05:49:18,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 51 states have internal predecessors, (60), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-13 05:49:18,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 120 transitions. [2024-09-13 05:49:18,905 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 120 transitions. Word has length 105 [2024-09-13 05:49:18,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:49:18,906 INFO L474 AbstractCegarLoop]: Abstraction has 84 states and 120 transitions. [2024-09-13 05:49:18,906 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 21 states have internal predecessors, (53), 13 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 13 states have call predecessors, (40), 13 states have call successors, (40) [2024-09-13 05:49:18,906 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 120 transitions. [2024-09-13 05:49:18,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-09-13 05:49:18,907 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:49:18,907 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:49:18,919 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-13 05:49:19,107 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-13 05:49:19,107 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 05:49:19,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:49:19,108 INFO L85 PathProgramCache]: Analyzing trace with hash -36897264, now seen corresponding path program 2 times [2024-09-13 05:49:19,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:49:19,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933305910] [2024-09-13 05:49:19,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:49:19,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:49:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:19,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 05:49:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:19,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 05:49:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:19,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 05:49:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:19,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-13 05:49:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:19,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-13 05:49:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:19,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-13 05:49:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:19,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 05:49:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:19,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-13 05:49:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:19,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-13 05:49:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:19,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-13 05:49:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:19,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-13 05:49:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:19,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-13 05:49:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:19,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-13 05:49:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:19,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-13 05:49:19,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:19,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-13 05:49:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:19,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-13 05:49:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:19,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-13 05:49:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:19,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-13 05:49:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:19,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-13 05:49:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:19,600 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2024-09-13 05:49:19,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:49:19,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933305910] [2024-09-13 05:49:19,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933305910] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:49:19,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773737153] [2024-09-13 05:49:19,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 05:49:19,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:49:19,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:49:19,602 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:49:19,603 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-13 05:49:19,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 05:49:19,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 05:49:19,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-13 05:49:19,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:49:20,334 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2024-09-13 05:49:20,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:49:20,485 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2024-09-13 05:49:20,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773737153] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 05:49:20,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-13 05:49:20,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 11] total 18 [2024-09-13 05:49:20,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510891884] [2024-09-13 05:49:20,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:49:20,486 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 05:49:20,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:49:20,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 05:49:20,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-09-13 05:49:20,486 INFO L87 Difference]: Start difference. First operand 84 states and 120 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-09-13 05:49:20,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:49:20,518 INFO L93 Difference]: Finished difference Result 83 states and 119 transitions. [2024-09-13 05:49:20,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 05:49:20,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 119 [2024-09-13 05:49:20,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:49:20,520 INFO L225 Difference]: With dead ends: 83 [2024-09-13 05:49:20,520 INFO L226 Difference]: Without dead ends: 64 [2024-09-13 05:49:20,520 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 265 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-09-13 05:49:20,520 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 5 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 05:49:20,520 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 66 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:49:20,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-09-13 05:49:20,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2024-09-13 05:49:20,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 38 states have internal predecessors, (42), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-13 05:49:20,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 88 transitions. [2024-09-13 05:49:20,523 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 88 transitions. Word has length 119 [2024-09-13 05:49:20,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:49:20,523 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 88 transitions. [2024-09-13 05:49:20,523 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-09-13 05:49:20,523 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 88 transitions. [2024-09-13 05:49:20,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-09-13 05:49:20,524 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:49:20,524 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:49:20,537 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-13 05:49:20,724 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-13 05:49:20,725 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 05:49:20,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:49:20,725 INFO L85 PathProgramCache]: Analyzing trace with hash -2055486565, now seen corresponding path program 1 times [2024-09-13 05:49:20,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:49:20,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809176826] [2024-09-13 05:49:20,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:49:20,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:49:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:22,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 05:49:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:22,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 05:49:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:22,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 05:49:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:22,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-13 05:49:22,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:22,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-13 05:49:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:22,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-13 05:49:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:22,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 05:49:22,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:22,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-13 05:49:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:22,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-13 05:49:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:22,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-13 05:49:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:22,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-13 05:49:22,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:22,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-13 05:49:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:22,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-13 05:49:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:22,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-13 05:49:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:22,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-13 05:49:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:22,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-13 05:49:22,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:22,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-13 05:49:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:22,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-13 05:49:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:22,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-13 05:49:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:22,506 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2024-09-13 05:49:22,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:49:22,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809176826] [2024-09-13 05:49:22,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809176826] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:49:22,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504571636] [2024-09-13 05:49:22,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:49:22,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:49:22,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:49:22,508 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:49:22,510 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-13 05:49:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:22,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-13 05:49:22,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:49:23,579 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2024-09-13 05:49:23,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:49:30,835 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 9 proven. 35 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2024-09-13 05:49:30,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504571636] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 05:49:30,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 05:49:30,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 27 [2024-09-13 05:49:30,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436402956] [2024-09-13 05:49:30,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 05:49:30,836 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-13 05:49:30,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:49:30,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-13 05:49:30,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=574, Unknown=0, NotChecked=0, Total=756 [2024-09-13 05:49:30,838 INFO L87 Difference]: Start difference. First operand 63 states and 88 transitions. Second operand has 28 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 28 states have internal predecessors, (70), 17 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 17 states have call predecessors, (51), 17 states have call successors, (51) [2024-09-13 05:49:31,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:49:31,524 INFO L93 Difference]: Finished difference Result 70 states and 97 transitions. [2024-09-13 05:49:31,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-13 05:49:31,524 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 28 states have internal predecessors, (70), 17 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 17 states have call predecessors, (51), 17 states have call successors, (51) Word has length 119 [2024-09-13 05:49:31,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:49:31,525 INFO L225 Difference]: With dead ends: 70 [2024-09-13 05:49:31,525 INFO L226 Difference]: Without dead ends: 70 [2024-09-13 05:49:31,525 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 257 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=209, Invalid=661, Unknown=0, NotChecked=0, Total=870 [2024-09-13 05:49:31,525 INFO L434 NwaCegarLoop]: 56 mSDtfsCounter, 21 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-13 05:49:31,525 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 266 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-13 05:49:31,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-09-13 05:49:31,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 63. [2024-09-13 05:49:31,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 37 states have (on average 1.054054054054054) internal successors, (39), 38 states have internal predecessors, (39), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-13 05:49:31,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 85 transitions. [2024-09-13 05:49:31,528 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 85 transitions. Word has length 119 [2024-09-13 05:49:31,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:49:31,528 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 85 transitions. [2024-09-13 05:49:31,528 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 28 states have internal predecessors, (70), 17 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 17 states have call predecessors, (51), 17 states have call successors, (51) [2024-09-13 05:49:31,528 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 85 transitions. [2024-09-13 05:49:31,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-09-13 05:49:31,529 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:49:31,529 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:49:31,541 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-13 05:49:31,733 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:49:31,733 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 05:49:31,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:49:31,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1366143380, now seen corresponding path program 2 times [2024-09-13 05:49:31,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:49:31,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255432574] [2024-09-13 05:49:31,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:49:31,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:49:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 05:49:31,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [148993393] [2024-09-13 05:49:31,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 05:49:31,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:49:31,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:49:31,829 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:49:31,830 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-13 05:49:31,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 05:49:31,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 05:49:31,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-09-13 05:49:31,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:49:32,880 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2024-09-13 05:49:32,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:49:34,741 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2024-09-13 05:49:34,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:49:34,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255432574] [2024-09-13 05:49:34,741 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 05:49:34,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148993393] [2024-09-13 05:49:34,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148993393] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 05:49:34,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 05:49:34,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 17 [2024-09-13 05:49:34,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811098124] [2024-09-13 05:49:34,742 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 05:49:34,742 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-13 05:49:34,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:49:34,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-13 05:49:34,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2024-09-13 05:49:34,743 INFO L87 Difference]: Start difference. First operand 63 states and 85 transitions. Second operand has 18 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 18 states have internal predecessors, (52), 9 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 9 states have call predecessors, (30), 9 states have call successors, (30) [2024-09-13 05:49:35,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:49:35,055 INFO L93 Difference]: Finished difference Result 66 states and 88 transitions. [2024-09-13 05:49:35,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-13 05:49:35,055 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 18 states have internal predecessors, (52), 9 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 9 states have call predecessors, (30), 9 states have call successors, (30) Word has length 133 [2024-09-13 05:49:35,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:49:35,056 INFO L225 Difference]: With dead ends: 66 [2024-09-13 05:49:35,056 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 05:49:35,056 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 245 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2024-09-13 05:49:35,056 INFO L434 NwaCegarLoop]: 66 mSDtfsCounter, 15 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 05:49:35,056 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 291 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 05:49:35,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 05:49:35,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 05:49:35,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:49:35,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 05:49:35,057 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 133 [2024-09-13 05:49:35,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:49:35,057 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 05:49:35,057 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 18 states have internal predecessors, (52), 9 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 9 states have call predecessors, (30), 9 states have call successors, (30) [2024-09-13 05:49:35,057 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 05:49:35,057 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 05:49:35,059 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 12 remaining) [2024-09-13 05:49:35,060 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION (10 of 12 remaining) [2024-09-13 05:49:35,060 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (9 of 12 remaining) [2024-09-13 05:49:35,060 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONPRE_CONDITION (8 of 12 remaining) [2024-09-13 05:49:35,060 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 12 remaining) [2024-09-13 05:49:35,060 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONPRE_CONDITION (6 of 12 remaining) [2024-09-13 05:49:35,060 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONPRE_CONDITION (5 of 12 remaining) [2024-09-13 05:49:35,060 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONPRE_CONDITION (4 of 12 remaining) [2024-09-13 05:49:35,061 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONPRE_CONDITION (3 of 12 remaining) [2024-09-13 05:49:35,061 INFO L785 garLoopResultBuilder]: Registering result SAFE for location assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION (2 of 12 remaining) [2024-09-13 05:49:35,061 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 12 remaining) [2024-09-13 05:49:35,061 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION (0 of 12 remaining) [2024-09-13 05:49:35,074 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-13 05:49:35,265 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:49:35,268 INFO L408 BasicCegarLoop]: Path program histogram: [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:49:35,269 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 05:49:35,270 INFO L469 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-09-13 05:49:35,270 INFO L470 ceAbstractionStarter]: WitnessConsidered=2 [2024-09-13 05:49:35,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 05:49:35 BoogieIcfgContainer [2024-09-13 05:49:35,271 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 05:49:35,271 INFO L158 Benchmark]: Toolchain (without parser) took 49620.88ms. Allocated memory was 184.5MB in the beginning and 578.8MB in the end (delta: 394.3MB). Free memory was 114.5MB in the beginning and 343.5MB in the end (delta: -229.0MB). Peak memory consumption was 167.9MB. Max. memory is 16.1GB. [2024-09-13 05:49:35,271 INFO L158 Benchmark]: Witness Parser took 0.13ms. Allocated memory is still 109.1MB. Free memory is still 76.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 05:49:35,271 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 184.5MB. Free memory is still 160.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 05:49:35,271 INFO L158 Benchmark]: CACSL2BoogieTranslator took 328.01ms. Allocated memory is still 184.5MB. Free memory was 114.3MB in the beginning and 154.9MB in the end (delta: -40.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-09-13 05:49:35,271 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.23ms. Allocated memory is still 184.5MB. Free memory was 154.2MB in the beginning and 148.6MB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-09-13 05:49:35,272 INFO L158 Benchmark]: Boogie Preprocessor took 38.56ms. Allocated memory is still 184.5MB. Free memory was 148.6MB in the beginning and 145.1MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-13 05:49:35,272 INFO L158 Benchmark]: RCFGBuilder took 461.84ms. Allocated memory is still 184.5MB. Free memory was 145.1MB in the beginning and 96.2MB in the end (delta: 48.9MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2024-09-13 05:49:35,272 INFO L158 Benchmark]: TraceAbstraction took 48728.99ms. Allocated memory was 184.5MB in the beginning and 578.8MB in the end (delta: 394.3MB). Free memory was 95.5MB in the beginning and 343.5MB in the end (delta: -248.0MB). Peak memory consumption was 149.4MB. Max. memory is 16.1GB. [2024-09-13 05:49:35,273 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.13ms. Allocated memory is still 109.1MB. Free memory is still 76.2MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.09ms. Allocated memory is still 184.5MB. Free memory is still 160.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 328.01ms. Allocated memory is still 184.5MB. Free memory was 114.3MB in the beginning and 154.9MB in the end (delta: -40.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.23ms. Allocated memory is still 184.5MB. Free memory was 154.2MB in the beginning and 148.6MB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.56ms. Allocated memory is still 184.5MB. Free memory was 148.6MB in the beginning and 145.1MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 461.84ms. Allocated memory is still 184.5MB. Free memory was 145.1MB in the beginning and 96.2MB in the end (delta: 48.9MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * TraceAbstraction took 48728.99ms. Allocated memory was 184.5MB in the beginning and 578.8MB in the end (delta: 394.3MB). Free memory was 95.5MB in the beginning and 343.5MB in the end (delta: -248.0MB). Peak memory consumption was 149.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 36]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 46]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 11]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 14]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 43 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 48.7s, OverallIterations: 20, TraceHistogramMax: 18, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 8.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 369 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 294 mSDsluCounter, 3680 SdHoareTripleChecker+Invalid, 3.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2730 mSDsCounter, 393 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3510 IncrementalHoareTripleChecker+Invalid, 3903 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 393 mSolverCounterUnsat, 950 mSDtfsCounter, 3510 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2783 GetRequests, 2516 SyntacticMatches, 31 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1119 ImplicationChecksByTransitivity, 9.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=11, InterpolantAutomatonStates: 171, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 20 MinimizatonAttempts, 132 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 35.7s InterpolantComputationTime, 2548 NumberOfCodeBlocks, 2477 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 3297 ConstructedInterpolants, 0 QuantifiedInterpolants, 57750 SizeOfPredicates, 17 NumberOfNonLiveVariables, 2666 ConjunctsInSsa, 343 ConjunctsInUnsatCore, 43 InterpolantComputations, 9 PerfectInterpolantSequences, 10043/10710 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-13 05:49:35,436 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...