./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/gr2006.i --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/gr2006.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1d5fa637 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReachWitnessValidation.xml -i ../sv-benchmarks/c/loop-lit/gr2006.i ../results/automizer-verification-files/SV-COMP24_unreach-call/gr2006.yml/witness-2.1.yml -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --- Real Ultimate output --- This is Ultimate 0.2.4-dev-1d5fa63-m [2024-09-13 10:12:55,743 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 10:12:55,809 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 10:12:55,813 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 10:12:55,814 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 10:12:55,838 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 10:12:55,838 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 10:12:55,839 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 10:12:55,839 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 10:12:55,843 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 10:12:55,844 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 10:12:55,844 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 10:12:55,844 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 10:12:55,844 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 10:12:55,845 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 10:12:55,845 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 10:12:55,845 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 10:12:55,847 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 10:12:55,848 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 10:12:55,848 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 10:12:55,848 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 10:12:55,848 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 10:12:55,849 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 10:12:55,849 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 10:12:55,849 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 10:12:55,849 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 10:12:55,849 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 10:12:55,849 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 10:12:55,850 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 10:12:55,850 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 10:12:55,850 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 10:12:55,850 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 10:12:55,850 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 10:12:55,851 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 10:12:55,851 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 10:12:55,851 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 10:12:55,851 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 10:12:55,851 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 10:12:55,852 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 10:12:55,852 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 10:12:55,852 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 10:12:55,852 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 10:12:55,853 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 10:12:56,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 10:12:56,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 10:12:56,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 10:12:56,101 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 10:12:56,102 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 10:12:56,103 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/gr2006.yml/witness-2.1.yml [2024-09-13 10:12:56,192 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 10:12:56,192 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 10:12:56,193 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-lit/gr2006.i [2024-09-13 10:12:57,468 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 10:12:57,619 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 10:12:57,619 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-lit/gr2006.i [2024-09-13 10:12:57,625 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/3eb1e31af/ecdc37d658b345eaad914734fb583ecc/FLAGcb771995d [2024-09-13 10:12:57,638 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/3eb1e31af/ecdc37d658b345eaad914734fb583ecc [2024-09-13 10:12:57,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 10:12:57,639 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 10:12:57,640 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 10:12:57,640 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 10:12:57,644 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 10:12:57,645 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 10:12:56" (1/2) ... [2024-09-13 10:12:57,645 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b59f582 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:12:57, skipping insertion in model container [2024-09-13 10:12:57,646 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 10:12:56" (1/2) ... [2024-09-13 10:12:57,647 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@585f524c and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:12:57, skipping insertion in model container [2024-09-13 10:12:57,647 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:12:57" (2/2) ... [2024-09-13 10:12:57,647 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b59f582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:12:57, skipping insertion in model container [2024-09-13 10:12:57,647 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:12:57" (2/2) ... [2024-09-13 10:12:57,655 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 10:12:57,655 INFO L1541 ArrayList]: Loop invariant at [L28-L36] ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((y == 14) && (x == 14)) || ((x == 89) && (y == 11))) || ((x == 37) && (y == 37))) || ((y == 9) && (91 == x))) || ((y == 16) && (84 == x))) || ((x == 78) && (y == 22))) || ((57 == x) && (y == 43))) || ((x == 0) && (y == 0))) || ((y == 27) && (x == 73))) || ((y == 34) && (x == 34))) || ((x == 24) && (y == 24))) || ((y == 36) && (64 == x))) || ((y == 10) && (x == 10))) || ((7 == y) && (7 == x))) || ((x == 60) && (40 == y))) || ((y == 31) && (x == 69))) || ((x == 45) && (y == 45))) || ((y == 25) && (x == 75))) || ((y == 25) && (x == 25))) || ((x == 82) && (y == 18))) || ((x == 52) && (y == 48))) || ((42 == y) && (42 == x))) || ((32 == y) && (68 == x))) || ((y == 0) && (x == 100))) || ((44 == x) && (44 == y))) || ((29 == y) && (x == 71))) || ((y == 48) && (x == 48))) || ((y == 1) && (x == 1))) || ((y == 16) && (x == 16))) || ((y == 22) && (x == 22))) || ((x == 83) && (y == 17))) || ((y == 2) && (98 == x))) || ((x == 33) && (y == 33))) || ((49 == y) && (51 == x))) || ((x == 58) && (42 == y))) || ((87 == x) && (y == 13))) || ((x == 65) && (35 == y))) || ((y == 43) && (x == 43))) || ((77 == x) && (23 == y))) || ((29 == x) && (29 == y))) || ((y == 8) && (x == 8))) || ((y == 10) && (x == 90))) || ((x == 50) && (y == 50))) || ((x == 74) && (y == 26))) || ((x == 26) && (y == 26))) || ((y == 38) && (x == 38))) || ((66 == x) && (y == 34))) || ((19 == x) && (19 == y))) || ((95 == x) && (5 == y))) || ((y == 46) && (x == 54))) || ((y == 9) && (x == 9))) || ((x == 96) && (y == 4))) || ((32 == y) && (32 == x))) || ((y == 33) && (67 == x))) || ((7 == y) && (x == 93))) || ((x == 80) && (y == 20))) || ((y == 12) && (88 == x))) || ((x == 20) && (y == 20))) || ((30 == y) && (30 == x))) || ((y == 47) && (53 == x))) || ((y == 24) && (76 == x))) || ((x == 18) && (y == 18))) || ((x == 28) && (y == 28))) || ((x == 39) && (y == 39))) || ((y == 46) && (x == 46))) || ((x == 15) && (y == 15))) || ((81 == x) && (19 == y))) || ((41 == x) && (41 == y))) || ((23 == y) && (23 == x))) || ((x == 17) && (y == 17))) || ((97 == x) && (y == 3))) || ((x == 99) && (y == 1))) || ((y == 12) && (x == 12))) || ((y == 6) && (94 == x))) || ((y == 14) && (x == 86))) || ((y == 15) && (x == 85))) || ((x == 47) && (y == 47))) || ((x == 13) && (y == 13))) || ((35 == x) && (35 == y))) || ((56 == x) && (44 == y))) || ((y == 2) && (x == 2))) || ((x == 3) && (y == 3))) || ((y == 4) && (x == 4))) || ((y == 31) && (x == 31))) || ((y == 45) && (x == 55))) || ((y == 27) && (x == 27))) || ((y == 6) && (x == 6))) || ((y == 8) && (92 == x))) || ((59 == x) && (41 == y))) || ((72 == x) && (y == 28))) || ((y == 11) && (x == 11))) || ((40 == x) && (40 == y))) || ((y == 38) && (x == 62))) || ((5 == y) && (5 == x))) || ((30 == y) && (x == 70))) || ((y == 36) && (x == 36))) || ((49 == y) && (49 == x))) || ((x == 61) && (y == 39))) || ((x == 63) && (y == 37))) || ((x == 79) && (y == 21))) || ((y == 21) && (x == 21))) [2024-09-13 10:12:57,656 INFO L1541 ArrayList]: Function contract at [L17]: requires (1 <= \old(cond)), ensures (1 <= \old(cond)) [2024-09-13 10:12:57,668 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 10:12:57,808 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/loop-lit/gr2006.i[895,908] [2024-09-13 10:12:57,817 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 10:12:57,824 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-09-13 10:12:57,852 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/loop-lit/gr2006.i[895,908] Start Parsing Local [2024-09-13 10:12:57,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 10:12:57,900 INFO L204 MainTranslator]: Completed translation [2024-09-13 10:12:57,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:12:57 WrapperNode [2024-09-13 10:12:57,901 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 10:12:57,902 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 10:12:57,903 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 10:12:57,903 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 10:12:57,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:12:57" (1/1) ... [2024-09-13 10:12:57,917 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:12:57" (1/1) ... [2024-09-13 10:12:57,939 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 37 [2024-09-13 10:12:57,940 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 10:12:57,941 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 10:12:57,941 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 10:12:57,945 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 10:12:57,959 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:12:57" (1/1) ... [2024-09-13 10:12:57,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:12:57" (1/1) ... [2024-09-13 10:12:57,960 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:12:57" (1/1) ... [2024-09-13 10:12:57,969 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-13 10:12:57,969 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:12:57" (1/1) ... [2024-09-13 10:12:57,969 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:12:57" (1/1) ... [2024-09-13 10:12:57,973 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:12:57" (1/1) ... [2024-09-13 10:12:57,977 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:12:57" (1/1) ... [2024-09-13 10:12:57,978 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:12:57" (1/1) ... [2024-09-13 10:12:57,979 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:12:57" (1/1) ... [2024-09-13 10:12:57,981 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 10:12:57,981 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 10:12:57,981 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 10:12:57,982 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 10:12:57,982 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:12:57" (1/1) ... [2024-09-13 10:12:57,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 10:12:57,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:12:58,007 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 10:12:58,009 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 10:12:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 10:12:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 10:12:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 10:12:58,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 10:12:58,089 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 10:12:58,090 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 10:12:58,309 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-13 10:12:58,309 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 10:12:58,327 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 10:12:58,328 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-13 10:12:58,328 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:12:58 BoogieIcfgContainer [2024-09-13 10:12:58,328 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 10:12:58,330 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 10:12:58,330 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 10:12:58,333 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 10:12:58,334 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 10:12:56" (1/4) ... [2024-09-13 10:12:58,335 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dbb22d7 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 10:12:58, skipping insertion in model container [2024-09-13 10:12:58,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 10:12:57" (2/4) ... [2024-09-13 10:12:58,336 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dbb22d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 10:12:58, skipping insertion in model container [2024-09-13 10:12:58,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:12:57" (3/4) ... [2024-09-13 10:12:58,340 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dbb22d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 10:12:58, skipping insertion in model container [2024-09-13 10:12:58,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:12:58" (4/4) ... [2024-09-13 10:12:58,341 INFO L112 eAbstractionObserver]: Analyzing ICFG gr2006.i [2024-09-13 10:12:58,355 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 10:12:58,355 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-09-13 10:12:58,392 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 10:12:58,399 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;@341a5508, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 10:12:58,399 INFO L337 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-09-13 10:12:58,403 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.9) internal successors, (19), 14 states have internal predecessors, (19), 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 10:12:58,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-09-13 10:12:58,408 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:12:58,409 INFO L216 NwaCegarLoop]: trace histogram [1, 1] [2024-09-13 10:12:58,409 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-13 10:12:58,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:12:58,418 INFO L85 PathProgramCache]: Analyzing trace with hash 2422, now seen corresponding path program 1 times [2024-09-13 10:12:58,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:12:58,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466106088] [2024-09-13 10:12:58,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:12:58,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:12:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:12:58,738 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 10:12:58,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:12:58,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466106088] [2024-09-13 10:12:58,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466106088] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:12:58,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:12:58,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-09-13 10:12:58,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753820091] [2024-09-13 10:12:58,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:12:58,748 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 10:12:58,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:12:58,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 10:12:58,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:12:58,773 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.9) internal successors, (19), 14 states have internal predecessors, (19), 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) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 10:12:58,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:12:58,821 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2024-09-13 10:12:58,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 10:12:58,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2024-09-13 10:12:58,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:12:58,829 INFO L225 Difference]: With dead ends: 18 [2024-09-13 10:12:58,830 INFO L226 Difference]: Without dead ends: 17 [2024-09-13 10:12:58,831 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 10:12:58,834 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:12:58,836 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 19 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:12:58,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-09-13 10:12:58,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-09-13 10:12:58,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 16 states have internal predecessors, (18), 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 10:12:58,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-09-13 10:12:58,860 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 2 [2024-09-13 10:12:58,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:12:58,860 INFO L474 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-09-13 10:12:58,861 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 10:12:58,861 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-09-13 10:12:58,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-09-13 10:12:58,862 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:12:58,862 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-09-13 10:12:58,862 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 10:12:58,862 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-13 10:12:58,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:12:58,865 INFO L85 PathProgramCache]: Analyzing trace with hash -2056872506, now seen corresponding path program 1 times [2024-09-13 10:12:58,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:12:58,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194760119] [2024-09-13 10:12:58,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:12:58,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:12:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:12:59,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:12:59,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:12:59,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194760119] [2024-09-13 10:12:59,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194760119] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:12:59,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567367649] [2024-09-13 10:12:59,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:12:59,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:12:59,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:12:59,114 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 10:12:59,116 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 10:12:59,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:12:59,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-13 10:12:59,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:12:59,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:12:59,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:12:59,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:12:59,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567367649] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:12:59,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:12:59,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-09-13 10:12:59,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080820809] [2024-09-13 10:12:59,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:12:59,256 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 10:12:59,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:12:59,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 10:12:59,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 10:12:59,257 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 10:12:59,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:12:59,295 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2024-09-13 10:12:59,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 10:12:59,295 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-09-13 10:12:59,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:12:59,296 INFO L225 Difference]: With dead ends: 21 [2024-09-13 10:12:59,296 INFO L226 Difference]: Without dead ends: 21 [2024-09-13 10:12:59,296 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 10:12:59,297 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:12:59,297 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 34 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:12:59,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-13 10:12:59,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-09-13 10:12:59,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 20 states have internal predecessors, (22), 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 10:12:59,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-09-13 10:12:59,300 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 6 [2024-09-13 10:12:59,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:12:59,300 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-09-13 10:12:59,300 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 10:12:59,301 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-09-13 10:12:59,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-13 10:12:59,301 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:12:59,301 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1] [2024-09-13 10:12:59,314 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 10:12:59,502 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:12:59,502 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-13 10:12:59,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:12:59,503 INFO L85 PathProgramCache]: Analyzing trace with hash 298486294, now seen corresponding path program 2 times [2024-09-13 10:12:59,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:12:59,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921414386] [2024-09-13 10:12:59,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:12:59,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:12:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:12:59,837 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:12:59,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:12:59,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921414386] [2024-09-13 10:12:59,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921414386] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:12:59,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47715281] [2024-09-13 10:12:59,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 10:12:59,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:12:59,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:12:59,842 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 10:12:59,844 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 10:12:59,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 10:12:59,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 10:12:59,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-13 10:12:59,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:12:59,967 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:12:59,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:13:00,013 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:13:00,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47715281] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:13:00,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:13:00,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-09-13 10:13:00,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010062065] [2024-09-13 10:13:00,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:13:00,014 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-13 10:13:00,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:13:00,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-13 10:13:00,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-13 10:13:00,015 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 10:13:00,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:13:00,073 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2024-09-13 10:13:00,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 10:13:00,074 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-09-13 10:13:00,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:13:00,075 INFO L225 Difference]: With dead ends: 25 [2024-09-13 10:13:00,075 INFO L226 Difference]: Without dead ends: 25 [2024-09-13 10:13:00,076 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-13 10:13:00,077 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:13:00,078 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 55 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:13:00,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-13 10:13:00,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-09-13 10:13:00,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 24 states have internal predecessors, (26), 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 10:13:00,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2024-09-13 10:13:00,083 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 10 [2024-09-13 10:13:00,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:13:00,084 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2024-09-13 10:13:00,084 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 10:13:00,084 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2024-09-13 10:13:00,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-13 10:13:00,086 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:13:00,086 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1] [2024-09-13 10:13:00,099 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 10:13:00,286 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:13:00,287 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-13 10:13:00,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:13:00,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1228943770, now seen corresponding path program 3 times [2024-09-13 10:13:00,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:13:00,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168047868] [2024-09-13 10:13:00,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:13:00,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:13:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:13:00,653 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:13:00,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:13:00,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168047868] [2024-09-13 10:13:00,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168047868] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:13:00,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154194132] [2024-09-13 10:13:00,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 10:13:00,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:13:00,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:13:00,656 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 10:13:00,657 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 10:13:00,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-13 10:13:00,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 10:13:00,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-09-13 10:13:00,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:13:07,344 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 10:13:07,344 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 10:13:07,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154194132] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:13:07,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 10:13:07,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2024-09-13 10:13:07,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917005973] [2024-09-13 10:13:07,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:13:07,345 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 10:13:07,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:13:07,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 10:13:07,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-09-13 10:13:07,346 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:13:07,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:13:07,431 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2024-09-13 10:13:07,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 10:13:07,434 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-09-13 10:13:07,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:13:07,435 INFO L225 Difference]: With dead ends: 30 [2024-09-13 10:13:07,435 INFO L226 Difference]: Without dead ends: 30 [2024-09-13 10:13:07,435 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-09-13 10:13:07,436 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:13:07,436 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 26 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:13:07,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-13 10:13:07,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-13 10:13:07,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 29 states have internal predecessors, (32), 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 10:13:07,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2024-09-13 10:13:07,439 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 14 [2024-09-13 10:13:07,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:13:07,439 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2024-09-13 10:13:07,439 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:13:07,440 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2024-09-13 10:13:07,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-13 10:13:07,440 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:13:07,440 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1] [2024-09-13 10:13:07,453 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 10:13:07,640 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:13:07,641 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-13 10:13:07,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:13:07,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1680182728, now seen corresponding path program 1 times [2024-09-13 10:13:07,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:13:07,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417009055] [2024-09-13 10:13:07,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:13:07,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:13:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:13:07,820 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:13:07,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:13:07,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417009055] [2024-09-13 10:13:07,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417009055] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:13:07,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572005045] [2024-09-13 10:13:07,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:13:07,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:13:07,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:13:07,823 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 10:13:07,825 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 10:13:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:13:07,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-13 10:13:07,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:13:07,922 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:13:07,922 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:13:07,966 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:13:07,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572005045] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:13:07,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:13:07,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-09-13 10:13:07,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111122350] [2024-09-13 10:13:07,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:13:07,969 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-13 10:13:07,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:13:07,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-13 10:13:07,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-09-13 10:13:07,970 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 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 10:13:08,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:13:08,030 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2024-09-13 10:13:08,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-13 10:13:08,030 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-09-13 10:13:08,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:13:08,032 INFO L225 Difference]: With dead ends: 50 [2024-09-13 10:13:08,032 INFO L226 Difference]: Without dead ends: 50 [2024-09-13 10:13:08,032 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-09-13 10:13:08,033 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:13:08,033 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 40 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:13:08,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-13 10:13:08,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-09-13 10:13:08,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 49 states have internal predecessors, (52), 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 10:13:08,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2024-09-13 10:13:08,039 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 18 [2024-09-13 10:13:08,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:13:08,039 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2024-09-13 10:13:08,039 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 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 10:13:08,039 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2024-09-13 10:13:08,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-13 10:13:08,040 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:13:08,040 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 1, 1, 1] [2024-09-13 10:13:08,054 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 10:13:08,240 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:13:08,240 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-13 10:13:08,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:13:08,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1154197448, now seen corresponding path program 2 times [2024-09-13 10:13:08,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:13:08,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793066235] [2024-09-13 10:13:08,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:13:08,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:13:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:13:08,595 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 17 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:13:08,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:13:08,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793066235] [2024-09-13 10:13:08,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793066235] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:13:08,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386407285] [2024-09-13 10:13:08,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 10:13:08,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:13:08,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:13:08,597 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 10:13:08,599 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 10:13:08,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 10:13:08,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 10:13:08,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-13 10:13:08,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:13:08,735 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 17 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:13:08,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:13:08,848 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 17 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:13:08,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386407285] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:13:08,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:13:08,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-09-13 10:13:08,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711299621] [2024-09-13 10:13:08,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:13:08,848 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-13 10:13:08,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:13:08,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-13 10:13:08,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2024-09-13 10:13:08,850 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 20 states have internal predecessors, (79), 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 10:13:08,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:13:08,960 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2024-09-13 10:13:08,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-13 10:13:08,960 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-09-13 10:13:08,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:13:08,961 INFO L225 Difference]: With dead ends: 90 [2024-09-13 10:13:08,961 INFO L226 Difference]: Without dead ends: 90 [2024-09-13 10:13:08,961 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2024-09-13 10:13:08,962 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:13:08,962 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 64 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:13:08,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-09-13 10:13:08,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-09-13 10:13:08,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 86 states have (on average 1.069767441860465) internal successors, (92), 89 states have internal predecessors, (92), 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 10:13:08,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2024-09-13 10:13:08,967 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 38 [2024-09-13 10:13:08,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:13:08,967 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2024-09-13 10:13:08,967 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 20 states have internal predecessors, (79), 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 10:13:08,968 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2024-09-13 10:13:08,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-09-13 10:13:08,969 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:13:08,969 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 1, 1, 1] [2024-09-13 10:13:08,982 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 10:13:09,169 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-13 10:13:09,170 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-13 10:13:09,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:13:09,170 INFO L85 PathProgramCache]: Analyzing trace with hash 856349416, now seen corresponding path program 3 times [2024-09-13 10:13:09,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:13:09,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221066395] [2024-09-13 10:13:09,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:13:09,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:13:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:13:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 37 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:13:10,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:13:10,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221066395] [2024-09-13 10:13:10,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221066395] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:13:10,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028284822] [2024-09-13 10:13:10,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 10:13:10,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:13:10,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:13:10,241 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 10:13:10,242 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 10:13:10,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-13 10:13:10,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 10:13:10,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-13 10:13:10,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:13:11,639 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2024-09-13 10:13:11,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:13:12,327 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2024-09-13 10:13:12,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028284822] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:13:12,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:13:12,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 6, 6] total 29 [2024-09-13 10:13:12,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422462298] [2024-09-13 10:13:12,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:13:12,329 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-13 10:13:12,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:13:12,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-13 10:13:12,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=500, Unknown=0, NotChecked=0, Total=812 [2024-09-13 10:13:12,333 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand has 29 states, 29 states have (on average 3.2758620689655173) internal successors, (95), 29 states have internal predecessors, (95), 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 10:13:14,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:13:14,503 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2024-09-13 10:13:14,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-09-13 10:13:14,504 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.2758620689655173) internal successors, (95), 29 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-09-13 10:13:14,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:13:14,505 INFO L225 Difference]: With dead ends: 101 [2024-09-13 10:13:14,505 INFO L226 Difference]: Without dead ends: 101 [2024-09-13 10:13:14,506 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=832, Invalid=1520, Unknown=0, NotChecked=0, Total=2352 [2024-09-13 10:13:14,506 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 10:13:14,506 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 61 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 10:13:14,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-09-13 10:13:14,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-09-13 10:13:14,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 97 states have (on average 1.0618556701030928) internal successors, (103), 100 states have internal predecessors, (103), 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 10:13:14,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2024-09-13 10:13:14,511 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 78 [2024-09-13 10:13:14,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:13:14,512 INFO L474 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2024-09-13 10:13:14,512 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.2758620689655173) internal successors, (95), 29 states have internal predecessors, (95), 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 10:13:14,512 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2024-09-13 10:13:14,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-09-13 10:13:14,513 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:13:14,513 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 22, 20, 2, 1, 1] [2024-09-13 10:13:14,525 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 10:13:14,713 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:13:14,714 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-13 10:13:14,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:13:14,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1886933414, now seen corresponding path program 4 times [2024-09-13 10:13:14,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:13:14,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192494775] [2024-09-13 10:13:14,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:13:14,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:13:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:13:16,003 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 124 proven. 820 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-13 10:13:16,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:13:16,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192494775] [2024-09-13 10:13:16,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192494775] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:13:16,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700788646] [2024-09-13 10:13:16,004 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 10:13:16,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:13:16,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:13:16,006 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 10:13:16,007 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 10:13:16,154 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 10:13:16,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 10:13:16,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-13 10:13:16,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:13:16,266 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 124 proven. 820 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-13 10:13:16,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:13:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 124 proven. 820 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-13 10:13:16,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700788646] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:13:16,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:13:16,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 44 [2024-09-13 10:13:16,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632046038] [2024-09-13 10:13:16,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:13:16,701 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-13 10:13:16,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:13:16,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-13 10:13:16,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2024-09-13 10:13:16,703 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand has 45 states, 45 states have (on average 3.9555555555555557) internal successors, (178), 44 states have internal predecessors, (178), 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 10:13:16,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:13:16,996 INFO L93 Difference]: Finished difference Result 189 states and 191 transitions. [2024-09-13 10:13:16,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-09-13 10:13:16,997 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.9555555555555557) internal successors, (178), 44 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-09-13 10:13:16,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:13:16,998 INFO L225 Difference]: With dead ends: 189 [2024-09-13 10:13:16,998 INFO L226 Difference]: Without dead ends: 189 [2024-09-13 10:13:16,998 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2024-09-13 10:13:16,999 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 10:13:16,999 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 103 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 10:13:16,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-09-13 10:13:17,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2024-09-13 10:13:17,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 185 states have (on average 1.0324324324324323) internal successors, (191), 188 states have internal predecessors, (191), 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 10:13:17,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 191 transitions. [2024-09-13 10:13:17,006 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 191 transitions. Word has length 90 [2024-09-13 10:13:17,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:13:17,007 INFO L474 AbstractCegarLoop]: Abstraction has 189 states and 191 transitions. [2024-09-13 10:13:17,007 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.9555555555555557) internal successors, (178), 44 states have internal predecessors, (178), 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 10:13:17,007 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 191 transitions. [2024-09-13 10:13:17,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-09-13 10:13:17,008 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:13:17,008 INFO L216 NwaCegarLoop]: trace histogram [44, 44, 44, 42, 2, 1, 1] [2024-09-13 10:13:17,023 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-13 10:13:17,209 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:13:17,209 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-13 10:13:17,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:13:17,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1437780678, now seen corresponding path program 5 times [2024-09-13 10:13:17,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:13:17,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480722321] [2024-09-13 10:13:17,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:13:17,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:13:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:13:21,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 256 proven. 3570 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-13 10:13:21,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:13:21,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480722321] [2024-09-13 10:13:21,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480722321] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:13:21,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43795571] [2024-09-13 10:13:21,371 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 10:13:21,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:13:21,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:13:21,373 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 10:13:21,374 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 10:13:22,364 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 45 check-sat command(s) [2024-09-13 10:13:22,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 10:13:22,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-13 10:13:22,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:13:22,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 256 proven. 3570 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-13 10:13:22,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:13:23,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 256 proven. 3570 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-13 10:13:23,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43795571] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:13:23,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:13:23,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 52 [2024-09-13 10:13:23,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461610689] [2024-09-13 10:13:23,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:13:23,482 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-13 10:13:23,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:13:23,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-13 10:13:23,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2024-09-13 10:13:23,484 INFO L87 Difference]: Start difference. First operand 189 states and 191 transitions. Second operand has 53 states, 53 states have (on average 4.0) internal successors, (212), 52 states have internal predecessors, (212), 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 10:13:23,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:13:23,752 INFO L93 Difference]: Finished difference Result 221 states and 223 transitions. [2024-09-13 10:13:23,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-13 10:13:23,753 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.0) internal successors, (212), 52 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2024-09-13 10:13:23,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:13:23,754 INFO L225 Difference]: With dead ends: 221 [2024-09-13 10:13:23,754 INFO L226 Difference]: Without dead ends: 221 [2024-09-13 10:13:23,754 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 311 SyntacticMatches, 36 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2024-09-13 10:13:23,755 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 10:13:23,755 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 89 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 10:13:23,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-09-13 10:13:23,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2024-09-13 10:13:23,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 217 states have (on average 1.0276497695852536) internal successors, (223), 220 states have internal predecessors, (223), 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 10:13:23,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 223 transitions. [2024-09-13 10:13:23,761 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 223 transitions. Word has length 178 [2024-09-13 10:13:23,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:13:23,761 INFO L474 AbstractCegarLoop]: Abstraction has 221 states and 223 transitions. [2024-09-13 10:13:23,761 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.0) internal successors, (212), 52 states have internal predecessors, (212), 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 10:13:23,762 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 223 transitions. [2024-09-13 10:13:23,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-09-13 10:13:23,763 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:13:23,763 INFO L216 NwaCegarLoop]: trace histogram [52, 52, 52, 50, 2, 1, 1] [2024-09-13 10:13:23,785 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 10:13:23,963 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:13:23,964 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-13 10:13:23,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:13:23,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1586464838, now seen corresponding path program 6 times [2024-09-13 10:13:23,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:13:23,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140827105] [2024-09-13 10:13:23,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:13:23,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:13:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:13:47,742 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 6 proven. 5350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:13:47,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:13:47,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140827105] [2024-09-13 10:13:47,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140827105] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:13:47,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783702152] [2024-09-13 10:13:47,742 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-13 10:13:47,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:13:47,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:13:47,744 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 10:13:47,745 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 10:13:47,890 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-09-13 10:13:47,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 10:13:47,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-09-13 10:13:47,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:13:50,915 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 306 proven. 0 refuted. 0 times theorem prover too weak. 5050 trivial. 0 not checked. [2024-09-13 10:13:50,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 10:13:50,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783702152] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:13:50,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 10:13:50,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [56] total 62 [2024-09-13 10:13:50,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525487705] [2024-09-13 10:13:50,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:13:50,916 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-13 10:13:50,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:13:50,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-13 10:13:50,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=3759, Unknown=0, NotChecked=0, Total=3906 [2024-09-13 10:13:50,917 INFO L87 Difference]: Start difference. First operand 221 states and 223 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:13:50,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:13:50,995 INFO L93 Difference]: Finished difference Result 220 states and 221 transitions. [2024-09-13 10:13:50,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 10:13:50,996 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2024-09-13 10:13:50,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:13:50,996 INFO L225 Difference]: With dead ends: 220 [2024-09-13 10:13:50,996 INFO L226 Difference]: Without dead ends: 220 [2024-09-13 10:13:50,997 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=147, Invalid=3759, Unknown=0, NotChecked=0, Total=3906 [2024-09-13 10:13:50,998 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 3 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:13:50,998 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 44 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:13:50,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-09-13 10:13:51,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 217. [2024-09-13 10:13:51,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 214 states have (on average 1.0186915887850467) internal successors, (218), 216 states have internal predecessors, (218), 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 10:13:51,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 218 transitions. [2024-09-13 10:13:51,005 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 218 transitions. Word has length 210 [2024-09-13 10:13:51,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:13:51,007 INFO L474 AbstractCegarLoop]: Abstraction has 217 states and 218 transitions. [2024-09-13 10:13:51,009 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:13:51,009 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 218 transitions. [2024-09-13 10:13:51,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-09-13 10:13:51,011 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:13:51,011 INFO L216 NwaCegarLoop]: trace histogram [52, 52, 51, 50, 2, 1, 1, 1, 1] [2024-09-13 10:13:51,027 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-13 10:13:51,211 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-13 10:13:51,212 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-13 10:13:51,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:13:51,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1935770871, now seen corresponding path program 1 times [2024-09-13 10:13:51,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:13:51,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059747171] [2024-09-13 10:13:51,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:13:51,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:13:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:13:52,045 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 781 proven. 7 refuted. 0 times theorem prover too weak. 4516 trivial. 0 not checked. [2024-09-13 10:13:52,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:13:52,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059747171] [2024-09-13 10:13:52,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059747171] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:13:52,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412112849] [2024-09-13 10:13:52,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:13:52,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:13:52,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:13:52,047 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 10:13:52,048 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 10:13:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:13:52,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-13 10:13:52,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:13:53,408 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 5292 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-13 10:13:53,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:13:54,334 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 5292 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-13 10:13:54,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412112849] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:13:54,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:13:54,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 52, 52] total 101 [2024-09-13 10:13:54,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760397390] [2024-09-13 10:13:54,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:13:54,335 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-09-13 10:13:54,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:13:54,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-09-13 10:13:54,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2024-09-13 10:13:54,340 INFO L87 Difference]: Start difference. First operand 217 states and 218 transitions. Second operand has 101 states, 101 states have (on average 4.0594059405940595) internal successors, (410), 101 states have internal predecessors, (410), 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 10:13:55,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:13:55,115 INFO L93 Difference]: Finished difference Result 413 states and 414 transitions. [2024-09-13 10:13:55,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-09-13 10:13:55,116 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 4.0594059405940595) internal successors, (410), 101 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 211 [2024-09-13 10:13:55,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:13:55,117 INFO L225 Difference]: With dead ends: 413 [2024-09-13 10:13:55,117 INFO L226 Difference]: Without dead ends: 413 [2024-09-13 10:13:55,119 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 324 SyntacticMatches, 4 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4996 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2024-09-13 10:13:55,120 INFO L434 NwaCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-13 10:13:55,120 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 254 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-13 10:13:55,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2024-09-13 10:13:55,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2024-09-13 10:13:55,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 410 states have (on average 1.0097560975609756) internal successors, (414), 412 states have internal predecessors, (414), 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 10:13:55,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 414 transitions. [2024-09-13 10:13:55,127 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 414 transitions. Word has length 211 [2024-09-13 10:13:55,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:13:55,127 INFO L474 AbstractCegarLoop]: Abstraction has 413 states and 414 transitions. [2024-09-13 10:13:55,127 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 4.0594059405940595) internal successors, (410), 101 states have internal predecessors, (410), 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 10:13:55,128 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 414 transitions. [2024-09-13 10:13:55,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2024-09-13 10:13:55,135 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:13:55,135 INFO L216 NwaCegarLoop]: trace histogram [101, 101, 100, 51, 50, 1, 1, 1, 1] [2024-09-13 10:13:55,158 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-13 10:13:55,336 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-13 10:13:55,336 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-13 10:13:55,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:13:55,336 INFO L85 PathProgramCache]: Analyzing trace with hash 797231127, now seen corresponding path program 2 times [2024-09-13 10:13:55,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:13:55,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719378904] [2024-09-13 10:13:55,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:13:55,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:13:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:14:48,803 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 4802 proven. 15398 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:14:48,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:14:48,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719378904] [2024-09-13 10:14:48,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719378904] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:14:48,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979732043] [2024-09-13 10:14:48,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 10:14:48,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:14:48,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:14:48,805 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 10:14:48,806 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 10:14:48,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-09-13 10:14:48,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 10:14:48,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-13 10:14:48,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:14:54,133 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 19900 trivial. 0 not checked. [2024-09-13 10:14:54,134 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 10:14:54,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979732043] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:14:54,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 10:14:54,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [104] total 107 [2024-09-13 10:14:54,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682394368] [2024-09-13 10:14:54,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:14:54,134 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 10:14:54,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:14:54,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 10:14:54,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1439, Invalid=10117, Unknown=0, NotChecked=0, Total=11556 [2024-09-13 10:14:54,137 INFO L87 Difference]: Start difference. First operand 413 states and 414 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:14:54,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:14:54,226 INFO L93 Difference]: Finished difference Result 411 states and 412 transitions. [2024-09-13 10:14:54,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 10:14:54,226 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 407 [2024-09-13 10:14:54,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:14:54,227 INFO L225 Difference]: With dead ends: 411 [2024-09-13 10:14:54,227 INFO L226 Difference]: Without dead ends: 410 [2024-09-13 10:14:54,230 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2748 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1439, Invalid=10117, Unknown=0, NotChecked=0, Total=11556 [2024-09-13 10:14:54,231 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:14:54,231 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 18 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:14:54,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2024-09-13 10:14:54,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2024-09-13 10:14:54,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 1.0048899755501222) internal successors, (411), 409 states have internal predecessors, (411), 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 10:14:54,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 411 transitions. [2024-09-13 10:14:54,241 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 411 transitions. Word has length 407 [2024-09-13 10:14:54,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:14:54,242 INFO L474 AbstractCegarLoop]: Abstraction has 410 states and 411 transitions. [2024-09-13 10:14:54,242 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:14:54,242 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 411 transitions. [2024-09-13 10:14:54,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2024-09-13 10:14:54,244 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:14:54,244 INFO L216 NwaCegarLoop]: trace histogram [101, 101, 100, 51, 50, 1, 1, 1, 1, 1, 1] [2024-09-13 10:14:54,257 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-13 10:14:54,444 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:14:54,445 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-13 10:14:54,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:14:54,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1634936378, now seen corresponding path program 1 times [2024-09-13 10:14:54,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:14:54,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93852012] [2024-09-13 10:14:54,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:14:54,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:14:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:14:55,832 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20200 trivial. 0 not checked. [2024-09-13 10:14:55,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:14:55,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93852012] [2024-09-13 10:14:55,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93852012] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:14:55,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:14:55,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 10:14:55,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716685565] [2024-09-13 10:14:55,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:14:55,833 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 10:14:55,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:14:55,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 10:14:55,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:14:55,834 INFO L87 Difference]: Start difference. First operand 410 states and 411 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:14:55,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:14:55,836 INFO L93 Difference]: Finished difference Result 408 states and 409 transitions. [2024-09-13 10:14:55,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 10:14:55,837 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 409 [2024-09-13 10:14:55,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:14:55,837 INFO L225 Difference]: With dead ends: 408 [2024-09-13 10:14:55,837 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 10:14:55,838 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 10:14:55,838 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:14:55,838 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:14:55,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 10:14:55,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 10:14:55,839 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 10:14:55,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 10:14:55,839 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 409 [2024-09-13 10:14:55,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:14:55,839 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 10:14:55,839 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), 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 10:14:55,839 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 10:14:55,839 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 10:14:55,842 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-09-13 10:14:55,842 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION (2 of 4 remaining) [2024-09-13 10:14:55,842 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-09-13 10:14:55,842 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONPOST_CONDITION (0 of 4 remaining) [2024-09-13 10:14:55,842 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-09-13 10:14:55,845 INFO L408 BasicCegarLoop]: Path program histogram: [6, 3, 2, 1, 1] [2024-09-13 10:14:55,846 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 10:14:55,847 INFO L469 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-09-13 10:14:55,848 INFO L470 ceAbstractionStarter]: WitnessConsidered=1 [2024-09-13 10:14:55,848 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 10:14:55 BoogieIcfgContainer [2024-09-13 10:14:55,848 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 10:14:55,849 INFO L158 Benchmark]: Toolchain (without parser) took 118209.72ms. Allocated memory was 172.0MB in the beginning and 3.5GB in the end (delta: 3.3GB). Free memory was 100.5MB in the beginning and 2.7GB in the end (delta: -2.6GB). Peak memory consumption was 730.2MB. Max. memory is 16.1GB. [2024-09-13 10:14:55,849 INFO L158 Benchmark]: Witness Parser took 0.20ms. Allocated memory is still 109.1MB. Free memory is still 73.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:14:55,849 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 172.0MB. Free memory is still 146.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:14:55,849 INFO L158 Benchmark]: CACSL2BoogieTranslator took 261.19ms. Allocated memory is still 172.0MB. Free memory was 100.3MB in the beginning and 139.4MB in the end (delta: -39.1MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. [2024-09-13 10:14:55,849 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.97ms. Allocated memory is still 172.0MB. Free memory was 138.8MB in the beginning and 137.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:14:55,850 INFO L158 Benchmark]: Boogie Preprocessor took 39.86ms. Allocated memory is still 172.0MB. Free memory was 137.3MB in the beginning and 135.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 10:14:55,850 INFO L158 Benchmark]: RCFGBuilder took 347.13ms. Allocated memory is still 172.0MB. Free memory was 135.3MB in the beginning and 113.6MB in the end (delta: 21.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-09-13 10:14:55,850 INFO L158 Benchmark]: TraceAbstraction took 117518.43ms. Allocated memory was 172.0MB in the beginning and 3.5GB in the end (delta: 3.3GB). Free memory was 113.0MB in the beginning and 2.7GB in the end (delta: -2.6GB). Peak memory consumption was 740.1MB. Max. memory is 16.1GB. [2024-09-13 10:14:55,851 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 0.20ms. Allocated memory is still 109.1MB. Free memory is still 73.2MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.15ms. Allocated memory is still 172.0MB. Free memory is still 146.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 261.19ms. Allocated memory is still 172.0MB. Free memory was 100.3MB in the beginning and 139.4MB in the end (delta: -39.1MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.97ms. Allocated memory is still 172.0MB. Free memory was 138.8MB in the beginning and 137.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.86ms. Allocated memory is still 172.0MB. Free memory was 137.3MB in the beginning and 135.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 347.13ms. Allocated memory is still 172.0MB. Free memory was 135.3MB in the beginning and 113.6MB in the end (delta: 21.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 117518.43ms. Allocated memory was 172.0MB in the beginning and 3.5GB in the end (delta: 3.3GB). Free memory was 113.0MB in the beginning and 2.7GB in the end (delta: -2.6GB). Peak memory consumption was 740.1MB. 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: 28]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 17]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 19]: 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: 17]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 117.5s, OverallIterations: 13, TraceHistogramMax: 101, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 822 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 636 mSDsCounter, 183 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1415 IncrementalHoareTripleChecker+Invalid, 1598 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 183 mSolverCounterUnsat, 186 mSDtfsCounter, 1415 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2178 GetRequests, 1681 SyntacticMatches, 41 SemanticMatches, 456 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9251 ImplicationChecksByTransitivity, 14.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=413occurred in iteration=11, InterpolantAutomatonStates: 263, 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, 13 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 106.7s InterpolantComputationTime, 2931 NumberOfCodeBlocks, 2267 NumberOfCodeBlocksAsserted, 79 NumberOfCheckSat, 3528 ConstructedInterpolants, 0 QuantifiedInterpolants, 14611 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2286 ConjunctsInSsa, 288 ConjunctsInUnsatCore, 32 InterpolantComputations, 5 PerfectInterpolantSequences, 69133/104249 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-13 10:14:55,886 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE