./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/simple_array_index_value_4.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5189fb62 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-crafted/simple_array_index_value_4.i ../results/automizer-verification-files/SV-COMP24_unreach-call/simple_array_index_value_4.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-5189fb6-m [2024-09-13 05:12:54,735 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 05:12:54,805 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 05:12:54,809 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 05:12:54,810 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 05:12:54,834 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 05:12:54,835 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 05:12:54,835 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 05:12:54,836 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 05:12:54,837 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 05:12:54,837 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 05:12:54,838 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 05:12:54,838 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 05:12:54,839 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 05:12:54,839 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 05:12:54,839 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 05:12:54,840 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 05:12:54,844 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 05:12:54,844 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 05:12:54,844 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 05:12:54,845 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 05:12:54,845 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 05:12:54,846 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 05:12:54,846 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 05:12:54,846 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 05:12:54,846 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 05:12:54,847 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 05:12:54,847 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 05:12:54,849 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 05:12:54,849 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 05:12:54,849 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 05:12:54,849 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 05:12:54,849 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 05:12:54,850 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 05:12:54,850 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 05:12:54,850 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 05:12:54,850 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 05:12:54,851 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 05:12:54,851 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 05:12:54,852 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 05:12:54,853 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 05:12:54,853 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 05:12:54,853 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 05:12:55,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 05:12:55,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 05:12:55,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 05:12:55,111 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 05:12:55,112 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 05:12:55,113 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/simple_array_index_value_4.yml/witness-2.1.yml [2024-09-13 05:12:55,176 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 05:12:55,176 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 05:12:55,178 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i [2024-09-13 05:12:56,709 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 05:12:56,900 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 05:12:56,901 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i [2024-09-13 05:12:56,908 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/84dfb740c/55d8c2cb927d4a3c886a5c3713b7c5bc/FLAG551ca9607 [2024-09-13 05:12:56,926 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/84dfb740c/55d8c2cb927d4a3c886a5c3713b7c5bc [2024-09-13 05:12:56,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 05:12:56,927 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 05:12:56,930 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 05:12:56,931 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 05:12:56,936 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 05:12:56,937 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 05:12:55" (1/2) ... [2024-09-13 05:12:56,938 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c47fa88 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:12:56, skipping insertion in model container [2024-09-13 05:12:56,938 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 05:12:55" (1/2) ... [2024-09-13 05:12:56,940 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1166a131 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:12:56, skipping insertion in model container [2024-09-13 05:12:56,940 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 05:12:56" (2/2) ... [2024-09-13 05:12:56,940 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c47fa88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:12:56, skipping insertion in model container [2024-09-13 05:12:56,940 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 05:12:56" (2/2) ... [2024-09-13 05:12:56,952 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 05:12:56,952 INFO L1541 ArrayList]: Loop invariant at [L49-L55] ((((loop_entered % 4294967296) == 0) && ((index2 % 4294967296) <= 99999)) || (((((4294967295 + index1) % 4294967296) + 1) <= (((long long) index2 + 1) % 4294967296)) && ((((long long) index2 + 1) % 4294967296) <= 99999))) [2024-09-13 05:12:56,952 INFO L1541 ArrayList]: Loop invariant at [L58-L62] (((((long long) (index1 % 4294967296) + 1) <= (index2 % 4294967296)) && ((index2 % 4294967296) <= 99999)) || (((((4294967295 + index1) % 4294967296) + 1) <= (((long long) index2 + 1) % 4294967296)) && ((((long long) index2 + 1) % 4294967296) <= 99999))) [2024-09-13 05:12:56,953 INFO L1541 ArrayList]: Loop invariant at [L40-L42] ((((loop_entered % 4294967296) == 0) && (i == 0)) || (((loop_entered % 4294967296) == 0) && (((i + 4294967295) % 4294967296) <= 99999))) [2024-09-13 05:12:56,953 INFO L1541 ArrayList]: Function contract at [L20]: requires null, ensures (\old(cond) != 0) [2024-09-13 05:12:56,953 INFO L1541 ArrayList]: Function contract at [L23]: requires (1 <= \old(cond)), ensures (1 <= \old(cond)) [2024-09-13 05:12:56,972 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 05:12:57,118 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-crafted/simple_array_index_value_4.i[919,932] [2024-09-13 05:12:57,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 05:12:57,157 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global Start Parsing Global [2024-09-13 05:12:57,187 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-crafted/simple_array_index_value_4.i[919,932] Start Parsing Local Start Parsing Local Start Parsing Local [2024-09-13 05:12:57,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 05:12:57,222 INFO L204 MainTranslator]: Completed translation [2024-09-13 05:12:57,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:12:57 WrapperNode [2024-09-13 05:12:57,223 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 05:12:57,225 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 05:12:57,225 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 05:12:57,226 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 05:12:57,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:12:57" (1/1) ... [2024-09-13 05:12:57,240 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:12:57" (1/1) ... [2024-09-13 05:12:57,289 INFO L138 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2024-09-13 05:12:57,289 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 05:12:57,290 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 05:12:57,290 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 05:12:57,290 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 05:12:57,308 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:12:57" (1/1) ... [2024-09-13 05:12:57,308 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:12:57" (1/1) ... [2024-09-13 05:12:57,311 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:12:57" (1/1) ... [2024-09-13 05:12:57,322 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure assume_abort_if_not is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-13 05:12:57,326 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:12:57" (1/1) ... [2024-09-13 05:12:57,326 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:12:57" (1/1) ... [2024-09-13 05:12:57,336 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:12:57" (1/1) ... [2024-09-13 05:12:57,344 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:12:57" (1/1) ... [2024-09-13 05:12:57,346 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:12:57" (1/1) ... [2024-09-13 05:12:57,350 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:12:57" (1/1) ... [2024-09-13 05:12:57,353 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 05:12:57,356 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 05:12:57,356 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 05:12:57,356 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 05:12:57,357 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:12:57" (1/1) ... [2024-09-13 05:12:57,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 05:12:57,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:12:57,388 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-13 05:12:57,395 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-13 05:12:57,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 05:12:57,440 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 05:12:57,440 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 05:12:57,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-13 05:12:57,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-13 05:12:57,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-09-13 05:12:57,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 05:12:57,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 05:12:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-09-13 05:12:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 05:12:57,441 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 05:12:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-13 05:12:57,513 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 05:12:57,517 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 05:12:57,847 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-13 05:12:57,870 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2024-09-13 05:12:57,870 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 05:12:57,903 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 05:12:57,905 INFO L318 CfgBuilder]: Removed 3 assume(true) statements. [2024-09-13 05:12:57,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 05:12:57 BoogieIcfgContainer [2024-09-13 05:12:57,905 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 05:12:57,907 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 05:12:57,908 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 05:12:57,911 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 05:12:57,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 05:12:55" (1/4) ... [2024-09-13 05:12:57,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee9445d and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 05:12:57, skipping insertion in model container [2024-09-13 05:12:57,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 05:12:56" (2/4) ... [2024-09-13 05:12:57,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee9445d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 05:12:57, skipping insertion in model container [2024-09-13 05:12:57,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:12:57" (3/4) ... [2024-09-13 05:12:57,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee9445d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 05:12:57, skipping insertion in model container [2024-09-13 05:12:57,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 05:12:57" (4/4) ... [2024-09-13 05:12:57,917 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i [2024-09-13 05:12:57,932 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 05:12:57,933 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-09-13 05:12:57,977 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 05:12:57,987 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;@4a7034d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 05:12:57,987 INFO L337 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-09-13 05:12:57,992 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 30 states have internal predecessors, (38), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-13 05:12:57,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-09-13 05:12:57,999 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:12:58,000 INFO L216 NwaCegarLoop]: trace histogram [1, 1] [2024-09-13 05:12:58,001 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 5 more)] === [2024-09-13 05:12:58,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:12:58,012 INFO L85 PathProgramCache]: Analyzing trace with hash 4096, now seen corresponding path program 1 times [2024-09-13 05:12:58,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:12:58,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294697827] [2024-09-13 05:12:58,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:12:58,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:12:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:12:58,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:12:58,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:12:58,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294697827] [2024-09-13 05:12:58,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294697827] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:12:58,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:12:58,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-09-13 05:12:58,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691088737] [2024-09-13 05:12:58,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:12:58,340 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 05:12:58,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:12:58,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 05:12:58,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:12:58,371 INFO L87 Difference]: Start difference. First operand has 37 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 30 states have internal predecessors, (38), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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 05:12:58,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:12:58,429 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2024-09-13 05:12:58,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 05:12:58,431 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 05:12:58,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:12:58,450 INFO L225 Difference]: With dead ends: 39 [2024-09-13 05:12:58,450 INFO L226 Difference]: Without dead ends: 37 [2024-09-13 05:12:58,452 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 05:12:58,455 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 05:12:58,456 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 68 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:12:58,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-13 05:12:58,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-09-13 05:12:58,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 30 states have internal predecessors, (32), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-13 05:12:58,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2024-09-13 05:12:58,518 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 2 [2024-09-13 05:12:58,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:12:58,518 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2024-09-13 05:12:58,518 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 05:12:58,518 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2024-09-13 05:12:58,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-09-13 05:12:58,519 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:12:58,519 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-09-13 05:12:58,519 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 05:12:58,519 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 5 more)] === [2024-09-13 05:12:58,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:12:58,520 INFO L85 PathProgramCache]: Analyzing trace with hash 3940321, now seen corresponding path program 1 times [2024-09-13 05:12:58,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:12:58,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056321782] [2024-09-13 05:12:58,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:12:58,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:12:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:12:58,718 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 05:12:58,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:12:58,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056321782] [2024-09-13 05:12:58,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056321782] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:12:58,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251444299] [2024-09-13 05:12:58,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:12:58,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:12:58,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:12:58,721 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:12:58,723 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 05:12:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:12:58,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-13 05:12:58,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:12:58,826 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 05:12:58,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:12:58,953 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 05:12:58,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251444299] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 05:12:58,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 05:12:58,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-09-13 05:12:58,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122080944] [2024-09-13 05:12:58,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 05:12:58,955 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-13 05:12:58,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:12:58,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-13 05:12:58,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-09-13 05:12:58,958 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:12:59,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:12:59,061 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2024-09-13 05:12:59,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 05:12:59,062 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 4 [2024-09-13 05:12:59,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:12:59,063 INFO L225 Difference]: With dead ends: 40 [2024-09-13 05:12:59,063 INFO L226 Difference]: Without dead ends: 40 [2024-09-13 05:12:59,063 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-09-13 05:12:59,064 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 05:12:59,067 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 125 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 05:12:59,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-13 05:12:59,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-09-13 05:12:59,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.25) internal successors, (35), 33 states have internal predecessors, (35), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-13 05:12:59,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2024-09-13 05:12:59,079 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 4 [2024-09-13 05:12:59,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:12:59,079 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2024-09-13 05:12:59,080 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:12:59,080 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2024-09-13 05:12:59,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-13 05:12:59,081 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:12:59,081 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:12:59,096 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 05:12:59,282 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 05:12:59,283 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 5 more)] === [2024-09-13 05:12:59,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:12:59,283 INFO L85 PathProgramCache]: Analyzing trace with hash 159008505, now seen corresponding path program 1 times [2024-09-13 05:12:59,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:12:59,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199448908] [2024-09-13 05:12:59,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:12:59,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:12:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:12:59,398 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 05:12:59,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:12:59,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199448908] [2024-09-13 05:12:59,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199448908] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:12:59,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:12:59,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 05:12:59,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824364373] [2024-09-13 05:12:59,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:12:59,400 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 05:12:59,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:12:59,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 05:12:59,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-13 05:12:59,401 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:12:59,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:12:59,436 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2024-09-13 05:12:59,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 05:12:59,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-09-13 05:12:59,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:12:59,438 INFO L225 Difference]: With dead ends: 39 [2024-09-13 05:12:59,438 INFO L226 Difference]: Without dead ends: 39 [2024-09-13 05:12:59,438 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-13 05:12:59,439 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 05:12:59,440 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 82 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:12:59,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-13 05:12:59,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-09-13 05:12:59,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 32 states have internal predecessors, (34), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-13 05:12:59,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2024-09-13 05:12:59,445 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 14 [2024-09-13 05:12:59,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:12:59,446 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2024-09-13 05:12:59,446 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:12:59,446 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2024-09-13 05:12:59,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-13 05:12:59,447 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:12:59,447 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:12:59,447 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-13 05:12:59,447 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 5 more)] === [2024-09-13 05:12:59,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:12:59,448 INFO L85 PathProgramCache]: Analyzing trace with hash -133837131, now seen corresponding path program 1 times [2024-09-13 05:12:59,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:12:59,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746646497] [2024-09-13 05:12:59,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:12:59,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:12:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:12:59,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 05:12:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:12:59,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 05:12:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:12:59,630 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 05:12:59,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:12:59,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746646497] [2024-09-13 05:12:59,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746646497] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:12:59,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474390475] [2024-09-13 05:12:59,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:12:59,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:12:59,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:12:59,635 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:12:59,637 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 05:12:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:12:59,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-13 05:12:59,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:12:59,807 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 05:12:59,807 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 05:12:59,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474390475] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:12:59,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 05:12:59,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-09-13 05:12:59,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805363298] [2024-09-13 05:12:59,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:12:59,808 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 05:12:59,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:12:59,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 05:12:59,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-09-13 05:12:59,810 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 6 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 05:12:59,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:12:59,900 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2024-09-13 05:12:59,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 05:12:59,901 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2024-09-13 05:12:59,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:12:59,902 INFO L225 Difference]: With dead ends: 47 [2024-09-13 05:12:59,902 INFO L226 Difference]: Without dead ends: 46 [2024-09-13 05:12:59,902 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-09-13 05:12:59,904 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 5 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 05:12:59,905 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 104 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 05:12:59,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-09-13 05:12:59,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2024-09-13 05:12:59,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 30 states have (on average 1.2) internal successors, (36), 33 states have internal predecessors, (36), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-13 05:12:59,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2024-09-13 05:12:59,917 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 22 [2024-09-13 05:12:59,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:12:59,918 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2024-09-13 05:12:59,918 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 05:12:59,918 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2024-09-13 05:12:59,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-13 05:12:59,919 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:12:59,919 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:12:59,936 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 05:13:00,119 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:13:00,120 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 5 more)] === [2024-09-13 05:13:00,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:13:00,120 INFO L85 PathProgramCache]: Analyzing trace with hash 231537976, now seen corresponding path program 1 times [2024-09-13 05:13:00,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:13:00,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637788918] [2024-09-13 05:13:00,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:13:00,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:13:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:00,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 05:13:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:00,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 05:13:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:00,397 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 05:13:00,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:13:00,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637788918] [2024-09-13 05:13:00,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637788918] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:13:00,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954400959] [2024-09-13 05:13:00,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:13:00,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:13:00,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:13:00,400 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:13:00,404 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 05:13:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:00,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-13 05:13:00,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:13:00,527 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-13 05:13:00,527 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 05:13:00,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954400959] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:13:00,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 05:13:00,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-09-13 05:13:00,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137216119] [2024-09-13 05:13:00,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:13:00,528 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 05:13:00,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:13:00,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 05:13:00,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-09-13 05:13:00,530 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 05:13:00,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:13:00,609 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2024-09-13 05:13:00,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 05:13:00,610 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2024-09-13 05:13:00,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:13:00,611 INFO L225 Difference]: With dead ends: 41 [2024-09-13 05:13:00,611 INFO L226 Difference]: Without dead ends: 41 [2024-09-13 05:13:00,611 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-09-13 05:13:00,612 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 05:13:00,613 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 65 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 05:13:00,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-13 05:13:00,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2024-09-13 05:13:00,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 29 states have (on average 1.206896551724138) internal successors, (35), 32 states have internal predecessors, (35), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-13 05:13:00,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2024-09-13 05:13:00,620 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 24 [2024-09-13 05:13:00,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:13:00,621 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2024-09-13 05:13:00,621 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 05:13:00,621 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2024-09-13 05:13:00,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-13 05:13:00,622 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:13:00,622 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:13:00,640 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-13 05:13:00,822 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:13:00,823 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 5 more)] === [2024-09-13 05:13:00,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:13:00,824 INFO L85 PathProgramCache]: Analyzing trace with hash 32255638, now seen corresponding path program 1 times [2024-09-13 05:13:00,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:13:00,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984054831] [2024-09-13 05:13:00,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:13:00,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:13:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:00,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 05:13:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:00,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 05:13:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:00,922 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-13 05:13:00,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:13:00,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984054831] [2024-09-13 05:13:00,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984054831] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:13:00,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:13:00,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 05:13:00,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196749557] [2024-09-13 05:13:00,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:13:00,925 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 05:13:00,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:13:00,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 05:13:00,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:13:00,926 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 05:13:00,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:13:00,939 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2024-09-13 05:13:00,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 05:13:00,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2024-09-13 05:13:00,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:13:00,940 INFO L225 Difference]: With dead ends: 38 [2024-09-13 05:13:00,940 INFO L226 Difference]: Without dead ends: 38 [2024-09-13 05:13:00,940 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:13:00,941 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 05:13:00,941 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:13:00,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-09-13 05:13:00,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-09-13 05:13:00,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 30 states have internal predecessors, (33), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-13 05:13:00,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2024-09-13 05:13:00,944 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 27 [2024-09-13 05:13:00,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:13:00,945 INFO L474 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2024-09-13 05:13:00,945 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 05:13:00,945 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2024-09-13 05:13:00,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-13 05:13:00,946 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:13:00,946 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:13:00,946 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-13 05:13:00,946 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 5 more)] === [2024-09-13 05:13:00,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:13:00,947 INFO L85 PathProgramCache]: Analyzing trace with hash 32255799, now seen corresponding path program 1 times [2024-09-13 05:13:00,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:13:00,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435313923] [2024-09-13 05:13:00,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:13:00,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:13:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:00,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 05:13:00,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:00,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 05:13:00,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:00,993 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-13 05:13:00,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:13:00,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435313923] [2024-09-13 05:13:00,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435313923] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:13:00,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:13:00,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 05:13:00,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026835187] [2024-09-13 05:13:00,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:13:00,994 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 05:13:00,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:13:00,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 05:13:00,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:13:00,995 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 05:13:01,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:13:01,015 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2024-09-13 05:13:01,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 05:13:01,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2024-09-13 05:13:01,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:13:01,016 INFO L225 Difference]: With dead ends: 37 [2024-09-13 05:13:01,016 INFO L226 Difference]: Without dead ends: 37 [2024-09-13 05:13:01,016 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:13:01,017 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 05:13:01,017 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 53 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:13:01,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-13 05:13:01,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-09-13 05:13:01,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 29 states have internal predecessors, (32), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-13 05:13:01,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2024-09-13 05:13:01,024 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 27 [2024-09-13 05:13:01,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:13:01,024 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2024-09-13 05:13:01,024 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 05:13:01,024 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2024-09-13 05:13:01,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-13 05:13:01,025 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:13:01,025 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:13:01,025 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-13 05:13:01,025 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 5 more)] === [2024-09-13 05:13:01,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:13:01,028 INFO L85 PathProgramCache]: Analyzing trace with hash -225648557, now seen corresponding path program 1 times [2024-09-13 05:13:01,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:13:01,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644670028] [2024-09-13 05:13:01,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:13:01,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:13:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:01,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 05:13:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:01,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 05:13:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:01,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 05:13:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:01,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 05:13:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:01,185 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-13 05:13:01,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:13:01,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644670028] [2024-09-13 05:13:01,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644670028] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:13:01,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854792596] [2024-09-13 05:13:01,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:13:01,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:13:01,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:13:01,187 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:13:01,189 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 05:13:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:01,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-13 05:13:01,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:13:01,280 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-13 05:13:01,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:13:01,364 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-13 05:13:01,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854792596] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 05:13:01,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 05:13:01,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 11 [2024-09-13 05:13:01,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003097959] [2024-09-13 05:13:01,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 05:13:01,366 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-13 05:13:01,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:13:01,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-13 05:13:01,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2024-09-13 05:13:01,367 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-09-13 05:13:01,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:13:01,492 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2024-09-13 05:13:01,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-13 05:13:01,495 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 36 [2024-09-13 05:13:01,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:13:01,496 INFO L225 Difference]: With dead ends: 47 [2024-09-13 05:13:01,496 INFO L226 Difference]: Without dead ends: 47 [2024-09-13 05:13:01,496 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=106, Unknown=0, NotChecked=0, Total=182 [2024-09-13 05:13:01,496 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 05:13:01,497 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 142 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 05:13:01,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-13 05:13:01,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-09-13 05:13:01,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.105263157894737) internal successors, (42), 39 states have internal predecessors, (42), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-13 05:13:01,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2024-09-13 05:13:01,505 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 36 [2024-09-13 05:13:01,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:13:01,507 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2024-09-13 05:13:01,507 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-09-13 05:13:01,507 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2024-09-13 05:13:01,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-13 05:13:01,508 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:13:01,508 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:13:01,524 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-13 05:13:01,708 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:13:01,709 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 5 more)] === [2024-09-13 05:13:01,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:13:01,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1376007176, now seen corresponding path program 2 times [2024-09-13 05:13:01,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:13:01,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830992676] [2024-09-13 05:13:01,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:13:01,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:13:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:02,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-13 05:13:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:02,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-13 05:13:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:02,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 05:13:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:02,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-13 05:13:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:02,047 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-13 05:13:02,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:13:02,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830992676] [2024-09-13 05:13:02,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830992676] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:13:02,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952107705] [2024-09-13 05:13:02,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 05:13:02,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:13:02,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:13:02,050 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:13:02,052 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 05:13:02,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 05:13:02,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 05:13:02,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-13 05:13:02,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:13:02,290 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-13 05:13:02,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:13:02,528 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-13 05:13:02,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952107705] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 05:13:02,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 05:13:02,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 21 [2024-09-13 05:13:02,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728834120] [2024-09-13 05:13:02,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 05:13:02,529 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-13 05:13:02,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:13:02,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-13 05:13:02,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2024-09-13 05:13:02,530 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 21 states have internal predecessors, (60), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-09-13 05:13:04,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:13:04,007 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2024-09-13 05:13:04,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-13 05:13:04,007 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 21 states have internal predecessors, (60), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 46 [2024-09-13 05:13:04,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:13:04,008 INFO L225 Difference]: With dead ends: 67 [2024-09-13 05:13:04,008 INFO L226 Difference]: Without dead ends: 67 [2024-09-13 05:13:04,009 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=306, Invalid=506, Unknown=0, NotChecked=0, Total=812 [2024-09-13 05:13:04,009 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 05:13:04,009 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 338 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 05:13:04,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-13 05:13:04,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-09-13 05:13:04,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 58 states have (on average 1.0689655172413792) internal successors, (62), 59 states have internal predecessors, (62), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-13 05:13:04,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2024-09-13 05:13:04,014 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 46 [2024-09-13 05:13:04,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:13:04,014 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2024-09-13 05:13:04,014 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 21 states have internal predecessors, (60), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-09-13 05:13:04,014 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2024-09-13 05:13:04,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-09-13 05:13:04,016 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:13:04,016 INFO L216 NwaCegarLoop]: trace histogram [19, 18, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:13:04,035 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-13 05:13:04,217 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:13:04,217 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 5 more)] === [2024-09-13 05:13:04,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:13:04,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1614162814, now seen corresponding path program 3 times [2024-09-13 05:13:04,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:13:04,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430678950] [2024-09-13 05:13:04,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:13:04,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:13:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:04,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-13 05:13:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:04,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-13 05:13:04,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:04,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-13 05:13:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:04,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-13 05:13:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:04,926 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-13 05:13:04,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:13:04,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430678950] [2024-09-13 05:13:04,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430678950] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:13:04,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834499361] [2024-09-13 05:13:04,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 05:13:04,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:13:04,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:13:04,929 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:13:04,931 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-13 05:13:05,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-13 05:13:05,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 05:13:05,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-13 05:13:05,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:13:05,194 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2024-09-13 05:13:05,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 05:13:05,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834499361] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:13:05,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 05:13:05,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [21] total 25 [2024-09-13 05:13:05,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372951146] [2024-09-13 05:13:05,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:13:05,195 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 05:13:05,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:13:05,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 05:13:05,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2024-09-13 05:13:05,197 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand has 6 states, 4 states have (on average 4.25) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-13 05:13:05,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:13:05,342 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2024-09-13 05:13:05,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 05:13:05,343 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 4.25) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 66 [2024-09-13 05:13:05,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:13:05,345 INFO L225 Difference]: With dead ends: 72 [2024-09-13 05:13:05,345 INFO L226 Difference]: Without dead ends: 69 [2024-09-13 05:13:05,345 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2024-09-13 05:13:05,346 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 10 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 05:13:05,347 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 74 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 05:13:05,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-09-13 05:13:05,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 64. [2024-09-13 05:13:05,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 57 states have internal predecessors, (59), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 05:13:05,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2024-09-13 05:13:05,354 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 66 [2024-09-13 05:13:05,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:13:05,355 INFO L474 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2024-09-13 05:13:05,355 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 4.25) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-13 05:13:05,359 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2024-09-13 05:13:05,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-09-13 05:13:05,360 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:13:05,360 INFO L216 NwaCegarLoop]: trace histogram [19, 18, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:13:05,378 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-13 05:13:05,560 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-13 05:13:05,561 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 5 more)] === [2024-09-13 05:13:05,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:13:05,561 INFO L85 PathProgramCache]: Analyzing trace with hash 2055243232, now seen corresponding path program 1 times [2024-09-13 05:13:05,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:13:05,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681847333] [2024-09-13 05:13:05,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:13:05,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:13:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:06,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-13 05:13:06,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:06,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-13 05:13:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:06,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-13 05:13:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:06,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-13 05:13:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:06,222 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-13 05:13:06,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:13:06,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681847333] [2024-09-13 05:13:06,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681847333] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:13:06,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912563119] [2024-09-13 05:13:06,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:13:06,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:13:06,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:13:06,224 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:13:06,225 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-13 05:13:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:06,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-13 05:13:06,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:13:06,669 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-13 05:13:06,669 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:13:07,442 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-13 05:13:07,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912563119] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 05:13:07,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 05:13:07,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 21] total 41 [2024-09-13 05:13:07,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015367042] [2024-09-13 05:13:07,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 05:13:07,444 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-13 05:13:07,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:13:07,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-13 05:13:07,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=478, Invalid=1162, Unknown=0, NotChecked=0, Total=1640 [2024-09-13 05:13:07,447 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand has 41 states, 41 states have (on average 2.5365853658536586) internal successors, (104), 41 states have internal predecessors, (104), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-09-13 05:13:38,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:13:38,889 INFO L93 Difference]: Finished difference Result 104 states and 107 transitions. [2024-09-13 05:13:38,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-13 05:13:38,889 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.5365853658536586) internal successors, (104), 41 states have internal predecessors, (104), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 71 [2024-09-13 05:13:38,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:13:38,890 INFO L225 Difference]: With dead ends: 104 [2024-09-13 05:13:38,890 INFO L226 Difference]: Without dead ends: 104 [2024-09-13 05:13:38,891 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 31.8s TimeCoverageRelationStatistics Valid=1216, Invalid=2206, Unknown=0, NotChecked=0, Total=3422 [2024-09-13 05:13:38,892 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-13 05:13:38,892 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 508 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-13 05:13:38,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-09-13 05:13:38,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-09-13 05:13:38,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 97 states have (on average 1.0206185567010309) internal successors, (99), 97 states have internal predecessors, (99), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 05:13:38,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 107 transitions. [2024-09-13 05:13:38,897 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 107 transitions. Word has length 71 [2024-09-13 05:13:38,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:13:38,897 INFO L474 AbstractCegarLoop]: Abstraction has 104 states and 107 transitions. [2024-09-13 05:13:38,898 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.5365853658536586) internal successors, (104), 41 states have internal predecessors, (104), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-09-13 05:13:38,898 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 107 transitions. [2024-09-13 05:13:38,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-09-13 05:13:38,899 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:13:38,899 INFO L216 NwaCegarLoop]: trace histogram [39, 38, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:13:38,916 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 05:13:39,103 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:13:39,104 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 5 more)] === [2024-09-13 05:13:39,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:13:39,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1308386228, now seen corresponding path program 2 times [2024-09-13 05:13:39,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:13:39,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383690390] [2024-09-13 05:13:39,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:13:39,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:13:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:41,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-13 05:13:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:41,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-13 05:13:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:41,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-13 05:13:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:41,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-13 05:13:41,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:13:41,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-13 05:13:41,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:13:41,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383690390] [2024-09-13 05:13:41,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383690390] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:13:41,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638098692] [2024-09-13 05:13:41,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 05:13:41,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:13:41,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:13:41,192 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:13:41,193 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-13 05:13:42,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 05:13:42,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 05:13:42,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-09-13 05:13:42,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:13:43,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-13 05:13:43,045 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:13:45,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-13 05:13:45,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638098692] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 05:13:45,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 05:13:45,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 41] total 81 [2024-09-13 05:13:45,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269846182] [2024-09-13 05:13:45,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 05:13:45,443 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-09-13 05:13:45,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:13:45,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-09-13 05:13:45,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1758, Invalid=4722, Unknown=0, NotChecked=0, Total=6480 [2024-09-13 05:13:45,448 INFO L87 Difference]: Start difference. First operand 104 states and 107 transitions. Second operand has 81 states, 81 states have (on average 2.271604938271605) internal successors, (184), 81 states have internal predecessors, (184), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-09-13 05:13:59,721 WARN L293 SmtUtils]: Spent 12.77s on a formula simplification. DAG size of input: 158 DAG size of output: 10 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-13 05:14:12,336 WARN L293 SmtUtils]: Spent 8.37s on a formula simplification. DAG size of input: 154 DAG size of output: 10 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-13 05:14:30,942 WARN L293 SmtUtils]: Spent 10.37s on a formula simplification. DAG size of input: 150 DAG size of output: 14 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-13 05:14:50,309 WARN L293 SmtUtils]: Spent 7.10s on a formula simplification. DAG size of input: 146 DAG size of output: 10 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-13 05:16:05,347 WARN L293 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 134 DAG size of output: 10 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-13 05:17:39,086 WARN L293 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 122 DAG size of output: 10 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-13 05:19:44,584 WARN L293 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 110 DAG size of output: 10 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-13 05:26:46,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:26:46,306 INFO L93 Difference]: Finished difference Result 184 states and 187 transitions. [2024-09-13 05:26:46,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-09-13 05:26:46,306 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.271604938271605) internal successors, (184), 81 states have internal predecessors, (184), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 111 [2024-09-13 05:26:46,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:26:46,307 INFO L225 Difference]: With dead ends: 184 [2024-09-13 05:26:46,307 INFO L226 Difference]: Without dead ends: 184 [2024-09-13 05:26:46,311 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 782.3s TimeCoverageRelationStatistics Valid=4795, Invalid=9206, Unknown=41, NotChecked=0, Total=14042 [2024-09-13 05:26:46,312 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 3299 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 3300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-09-13 05:26:46,312 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 945 Invalid, 3300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3299 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-09-13 05:26:46,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-09-13 05:26:46,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-09-13 05:26:46,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 177 states have (on average 1.0112994350282485) internal successors, (179), 177 states have internal predecessors, (179), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 05:26:46,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 187 transitions. [2024-09-13 05:26:46,321 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 187 transitions. Word has length 111 [2024-09-13 05:26:46,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:26:46,322 INFO L474 AbstractCegarLoop]: Abstraction has 184 states and 187 transitions. [2024-09-13 05:26:46,322 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 2.271604938271605) internal successors, (184), 81 states have internal predecessors, (184), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-09-13 05:26:46,322 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 187 transitions. [2024-09-13 05:26:46,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-09-13 05:26:46,325 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:26:46,325 INFO L216 NwaCegarLoop]: trace histogram [79, 78, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:26:46,342 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-13 05:26:46,525 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:26:46,526 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 5 more)] === [2024-09-13 05:26:46,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:26:46,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1541551396, now seen corresponding path program 3 times [2024-09-13 05:26:46,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:26:46,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160890398] [2024-09-13 05:26:46,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:26:46,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:26:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:26:52,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-13 05:26:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:26:52,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-13 05:26:52,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:26:52,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-13 05:26:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:26:52,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-13 05:26:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:26:52,610 INFO L134 CoverageAnalysis]: Checked inductivity of 6176 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-13 05:26:52,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:26:52,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160890398] [2024-09-13 05:26:52,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160890398] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:26:52,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836586638] [2024-09-13 05:26:52,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 05:26:52,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:26:52,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:26:52,613 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:26:52,614 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-13 05:26:52,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-13 05:26:52,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 05:26:52,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-13 05:26:52,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:26:54,529 INFO L349 Elim1Store]: treesize reduction 125, result has 5.3 percent of original size [2024-09-13 05:26:54,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 106 treesize of output 50 [2024-09-13 05:26:54,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6176 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6172 trivial. 0 not checked. [2024-09-13 05:26:54,753 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 05:26:54,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836586638] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:26:54,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 05:26:54,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [81] total 89 [2024-09-13 05:26:54,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578192242] [2024-09-13 05:26:54,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:26:54,755 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-13 05:26:54,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:26:54,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-13 05:26:54,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=7574, Unknown=0, NotChecked=0, Total=7832 [2024-09-13 05:26:54,758 INFO L87 Difference]: Start difference. First operand 184 states and 187 transitions. Second operand has 10 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 9 states have internal predecessors, (23), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-13 05:26:56,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:26:56,499 INFO L93 Difference]: Finished difference Result 194 states and 202 transitions. [2024-09-13 05:26:56,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-13 05:26:56,500 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 9 states have internal predecessors, (23), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 191 [2024-09-13 05:26:56,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:26:56,500 INFO L225 Difference]: With dead ends: 194 [2024-09-13 05:26:56,500 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 05:26:56,502 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=322, Invalid=8990, Unknown=0, NotChecked=0, Total=9312 [2024-09-13 05:26:56,502 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 8 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 05:26:56,502 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 119 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 05:26:56,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 05:26:56,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 05:26:56,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:26:56,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 05:26:56,503 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 191 [2024-09-13 05:26:56,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:26:56,504 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 05:26:56,504 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 9 states have internal predecessors, (23), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-13 05:26:56,504 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 05:26:56,504 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 05:26:56,506 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 8 remaining) [2024-09-13 05:26:56,507 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 8 remaining) [2024-09-13 05:26:56,507 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (5 of 8 remaining) [2024-09-13 05:26:56,507 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 8 remaining) [2024-09-13 05:26:56,507 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONPRE_CONDITION (3 of 8 remaining) [2024-09-13 05:26:56,507 INFO L785 garLoopResultBuilder]: Registering result SAFE for location assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION (2 of 8 remaining) [2024-09-13 05:26:56,508 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2024-09-13 05:26:56,508 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION (0 of 8 remaining) [2024-09-13 05:26:56,521 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 05:26:56,708 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-13 05:26:56,711 INFO L408 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:26:56,713 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 05:26:56,716 INFO L469 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-09-13 05:26:56,718 INFO L470 ceAbstractionStarter]: WitnessConsidered=3 [2024-09-13 05:26:56,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 05:26:56 BoogieIcfgContainer [2024-09-13 05:26:56,719 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 05:26:56,719 INFO L158 Benchmark]: Toolchain (without parser) took 839791.92ms. Allocated memory was 155.2MB in the beginning and 645.9MB in the end (delta: 490.7MB). Free memory was 81.7MB in the beginning and 369.8MB in the end (delta: -288.0MB). Peak memory consumption was 204.3MB. Max. memory is 16.1GB. [2024-09-13 05:26:56,719 INFO L158 Benchmark]: Witness Parser took 0.22ms. Allocated memory is still 155.2MB. Free memory is still 106.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 05:26:56,719 INFO L158 Benchmark]: CDTParser took 1.01ms. Allocated memory is still 155.2MB. Free memory is still 104.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 05:26:56,720 INFO L158 Benchmark]: CACSL2BoogieTranslator took 293.74ms. Allocated memory is still 155.2MB. Free memory was 81.5MB in the beginning and 67.0MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-13 05:26:56,720 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.28ms. Allocated memory is still 155.2MB. Free memory was 67.0MB in the beginning and 64.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 05:26:56,720 INFO L158 Benchmark]: Boogie Preprocessor took 65.53ms. Allocated memory is still 155.2MB. Free memory was 64.7MB in the beginning and 62.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 05:26:56,720 INFO L158 Benchmark]: RCFGBuilder took 549.57ms. Allocated memory was 155.2MB in the beginning and 209.7MB in the end (delta: 54.5MB). Free memory was 62.6MB in the beginning and 166.6MB in the end (delta: -104.0MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2024-09-13 05:26:56,721 INFO L158 Benchmark]: TraceAbstraction took 838811.39ms. Allocated memory was 209.7MB in the beginning and 645.9MB in the end (delta: 436.2MB). Free memory was 166.6MB in the beginning and 369.8MB in the end (delta: -203.1MB). Peak memory consumption was 234.4MB. Max. memory is 16.1GB. [2024-09-13 05:26:56,724 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 0.22ms. Allocated memory is still 155.2MB. Free memory is still 106.8MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 1.01ms. Allocated memory is still 155.2MB. Free memory is still 104.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 293.74ms. Allocated memory is still 155.2MB. Free memory was 81.5MB in the beginning and 67.0MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.28ms. Allocated memory is still 155.2MB. Free memory was 67.0MB in the beginning and 64.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.53ms. Allocated memory is still 155.2MB. Free memory was 64.7MB in the beginning and 62.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 549.57ms. Allocated memory was 155.2MB in the beginning and 209.7MB in the end (delta: 54.5MB). Free memory was 62.6MB in the beginning and 166.6MB in the end (delta: -104.0MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. * TraceAbstraction took 838811.39ms. Allocated memory was 209.7MB in the beginning and 645.9MB in the end (delta: 436.2MB). Free memory was 166.6MB in the beginning and 369.8MB in the end (delta: -203.1MB). Peak memory consumption was 234.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 40]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 49]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 23]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 58]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 23]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 20]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - PositiveResult [Line: 26]: 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: 23]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 37 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 838.8s, OverallIterations: 13, TraceHistogramMax: 79, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 816.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 44 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 37 mSDsluCounter, 2685 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2325 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4932 IncrementalHoareTripleChecker+Invalid, 4965 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 360 mSDtfsCounter, 4932 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1172 GetRequests, 810 SyntacticMatches, 2 SemanticMatches, 360 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 821.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred in iteration=12, InterpolantAutomatonStates: 204, 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, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 16.7s InterpolantComputationTime, 1212 NumberOfCodeBlocks, 1012 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 1453 ConstructedInterpolants, 0 QuantifiedInterpolants, 4266 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1290 ConjunctsInSsa, 194 ConjunctsInUnsatCore, 27 InterpolantComputations, 8 PerfectInterpolantSequences, 6804/19059 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-13 05:26:56,759 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE