./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/recursified_ps3-ll.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/recursified_nla-digbench/recursified_ps3-ll.c ../results/automizer-verification-files/SV-COMP24_unreach-call/recursified_ps3-ll.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 06:33:20,374 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 06:33:20,441 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 06:33:20,446 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 06:33:20,448 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 06:33:20,479 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 06:33:20,481 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 06:33:20,481 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 06:33:20,482 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 06:33:20,482 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 06:33:20,483 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 06:33:20,483 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 06:33:20,483 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 06:33:20,485 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 06:33:20,486 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 06:33:20,486 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 06:33:20,486 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 06:33:20,486 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 06:33:20,486 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 06:33:20,487 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 06:33:20,487 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 06:33:20,490 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 06:33:20,490 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 06:33:20,491 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 06:33:20,491 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 06:33:20,491 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 06:33:20,491 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 06:33:20,492 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 06:33:20,492 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 06:33:20,492 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 06:33:20,492 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 06:33:20,492 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 06:33:20,493 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 06:33:20,493 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 06:33:20,493 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 06:33:20,493 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 06:33:20,493 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 06:33:20,493 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 06:33:20,494 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 06:33:20,494 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 06:33:20,494 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 06:33:20,495 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 06:33:20,496 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 06:33:20,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 06:33:20,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 06:33:20,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 06:33:20,750 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 06:33:20,750 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 06:33:20,752 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.c [2024-09-13 06:33:22,103 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 06:33:22,280 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 06:33:22,281 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.c [2024-09-13 06:33:22,290 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/925000447/31ec5b7b59eb47158205935c96d5e8aa/FLAG8b25bbc99 [2024-09-13 06:33:22,690 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/925000447/31ec5b7b59eb47158205935c96d5e8aa [2024-09-13 06:33:22,693 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 06:33:22,693 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 06:33:22,694 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/recursified_ps3-ll.yml/witness-2.1.yml [2024-09-13 06:33:22,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 06:33:22,735 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 06:33:22,736 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 06:33:22,736 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 06:33:22,740 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 06:33:22,741 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 06:33:22" (1/2) ... [2024-09-13 06:33:22,742 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60ff9acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:33:22, skipping insertion in model container [2024-09-13 06:33:22,742 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 06:33:22" (1/2) ... [2024-09-13 06:33:22,743 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6c3785f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:33:22, skipping insertion in model container [2024-09-13 06:33:22,743 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 06:33:22" (2/2) ... [2024-09-13 06:33:22,744 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60ff9acd and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:33:22, skipping insertion in model container [2024-09-13 06:33:22,744 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 06:33:22" (2/2) ... [2024-09-13 06:33:22,750 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 06:33:22,751 INFO L1541 ArrayList]: Function contract at [L31]: requires (1 <= \old(cond)), ensures (1 <= \old(cond)) [2024-09-13 06:33:22,769 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 06:33:22,921 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/recursified_nla-digbench/recursified_ps3-ll.c[987,1000] [2024-09-13 06:33:22,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 06:33:22,950 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-09-13 06:33:22,988 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/recursified_nla-digbench/recursified_ps3-ll.c[987,1000] [2024-09-13 06:33:23,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 06:33:23,019 INFO L204 MainTranslator]: Completed translation [2024-09-13 06:33:23,019 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:33:23 WrapperNode [2024-09-13 06:33:23,019 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 06:33:23,020 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 06:33:23,020 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 06:33:23,020 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 06:33:23,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:33:23" (1/1) ... [2024-09-13 06:33:23,035 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:33:23" (1/1) ... [2024-09-13 06:33:23,051 INFO L138 Inliner]: procedures = 16, calls = 51, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2024-09-13 06:33:23,052 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 06:33:23,052 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 06:33:23,053 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 06:33:23,053 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 06:33:23,063 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:33:23" (1/1) ... [2024-09-13 06:33:23,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:33:23" (1/1) ... [2024-09-13 06:33:23,066 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:33:23" (1/1) ... [2024-09-13 06:33:23,088 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure __VERIFIER_assert is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-13 06:33:23,092 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:33:23" (1/1) ... [2024-09-13 06:33:23,092 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:33:23" (1/1) ... [2024-09-13 06:33:23,097 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:33:23" (1/1) ... [2024-09-13 06:33:23,102 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:33:23" (1/1) ... [2024-09-13 06:33:23,103 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:33:23" (1/1) ... [2024-09-13 06:33:23,106 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:33:23" (1/1) ... [2024-09-13 06:33:23,108 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 06:33:23,112 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 06:33:23,112 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 06:33:23,112 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 06:33:23,113 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:33:23" (1/1) ... [2024-09-13 06:33:23,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 06:33:23,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:33:23,148 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 06:33:23,150 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 06:33:23,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 06:33:23,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-13 06:33:23,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-13 06:33:23,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-09-13 06:33:23,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 06:33:23,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 06:33:23,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-09-13 06:33:23,215 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_26_to_34_0 [2024-09-13 06:33:23,215 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_26_to_34_0 [2024-09-13 06:33:23,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 06:33:23,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 06:33:23,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-13 06:33:23,355 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 06:33:23,358 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 06:33:23,541 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-13 06:33:23,562 INFO L? ?]: Removed 34 outVars from TransFormulas that were not future-live. [2024-09-13 06:33:23,563 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 06:33:23,585 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 06:33:23,585 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-13 06:33:23,586 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 06:33:23 BoogieIcfgContainer [2024-09-13 06:33:23,586 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 06:33:23,589 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 06:33:23,589 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 06:33:23,592 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 06:33:23,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 06:33:22" (1/4) ... [2024-09-13 06:33:23,593 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414dc1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 06:33:23, skipping insertion in model container [2024-09-13 06:33:23,593 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 06:33:22" (2/4) ... [2024-09-13 06:33:23,593 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414dc1db and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 06:33:23, skipping insertion in model container [2024-09-13 06:33:23,593 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:33:23" (3/4) ... [2024-09-13 06:33:23,594 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414dc1db and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 06:33:23, skipping insertion in model container [2024-09-13 06:33:23,594 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 06:33:23" (4/4) ... [2024-09-13 06:33:23,595 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_ps3-ll.c [2024-09-13 06:33:23,606 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 06:33:23,607 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-09-13 06:33:23,640 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 06:33:23,645 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;@20f21f20, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 06:33:23,645 INFO L337 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-09-13 06:33:23,648 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 17 states have internal predecessors, (19), 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 06:33:23,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-13 06:33:23,655 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:33:23,655 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-13 06:33:23,656 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_26_to_34_0Err0REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0REQUIRES_VIOLATIONPRE_CONDITION, func_to_recursive_line_26_to_34_0Err0REQUIRES_VIOLATIONPRE_CONDITION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-13 06:33:23,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:33:23,661 INFO L85 PathProgramCache]: Analyzing trace with hash 74160820, now seen corresponding path program 1 times [2024-09-13 06:33:23,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:33:23,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873008169] [2024-09-13 06:33:23,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:33:23,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:33:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 06:33:23,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [373188379] [2024-09-13 06:33:23,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:33:23,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:33:23,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:33:23,815 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 06:33:23,816 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 06:33:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:23,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-13 06:33:23,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:33:24,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:24,104 INFO L349 Elim1Store]: treesize reduction 40, result has 35.5 percent of original size [2024-09-13 06:33:24,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 45 [2024-09-13 06:33:24,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:24,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:24,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:24,146 INFO L349 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2024-09-13 06:33:24,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 50 [2024-09-13 06:33:24,176 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-09-13 06:33:24,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 86 [2024-09-13 06:33:24,424 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 06:33:24,424 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 06:33:24,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:33:24,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873008169] [2024-09-13 06:33:24,425 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 06:33:24,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373188379] [2024-09-13 06:33:24,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373188379] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:33:24,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:33:24,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-13 06:33:24,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283718862] [2024-09-13 06:33:24,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:33:24,434 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 06:33:24,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:33:24,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 06:33:24,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-13 06:33:24,465 INFO L87 Difference]: Start difference. First operand has 23 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 17 states have internal predecessors, (19), 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) Second operand has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:33:24,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:33:24,627 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2024-09-13 06:33:24,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 06:33:24,629 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-09-13 06:33:24,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:33:24,635 INFO L225 Difference]: With dead ends: 31 [2024-09-13 06:33:24,635 INFO L226 Difference]: Without dead ends: 29 [2024-09-13 06:33:24,636 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-09-13 06:33:24,641 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:33:24,642 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 71 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:33:24,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-13 06:33:24,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-09-13 06:33:24,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 21 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-13 06:33:24,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-09-13 06:33:24,677 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 5 [2024-09-13 06:33:24,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:33:24,678 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-09-13 06:33:24,678 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:33:24,678 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-09-13 06:33:24,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-13 06:33:24,679 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:33:24,680 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:33:24,698 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-13 06:33:24,880 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-09-13 06:33:24,881 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0REQUIRES_VIOLATIONPRE_CONDITION, func_to_recursive_line_26_to_34_0Err0REQUIRES_VIOLATIONPRE_CONDITION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-13 06:33:24,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:33:24,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1712682790, now seen corresponding path program 1 times [2024-09-13 06:33:24,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:33:24,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774151600] [2024-09-13 06:33:24,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:33:24,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:33:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:25,007 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 06:33:25,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:33:25,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774151600] [2024-09-13 06:33:25,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774151600] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:33:25,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:33:25,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 06:33:25,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475848913] [2024-09-13 06:33:25,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:33:25,028 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 06:33:25,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:33:25,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 06:33:25,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 06:33:25,029 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:33:25,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:33:25,051 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2024-09-13 06:33:25,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 06:33:25,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-09-13 06:33:25,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:33:25,053 INFO L225 Difference]: With dead ends: 27 [2024-09-13 06:33:25,054 INFO L226 Difference]: Without dead ends: 27 [2024-09-13 06:33:25,055 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 06:33:25,056 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 06:33:25,057 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 31 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 06:33:25,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-13 06:33:25,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-13 06:33:25,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-13 06:33:25,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-09-13 06:33:25,066 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 8 [2024-09-13 06:33:25,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:33:25,067 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-09-13 06:33:25,067 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:33:25,067 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-09-13 06:33:25,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-13 06:33:25,068 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:33:25,068 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:33:25,068 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 06:33:25,069 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0REQUIRES_VIOLATIONPRE_CONDITION, func_to_recursive_line_26_to_34_0Err0REQUIRES_VIOLATIONPRE_CONDITION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-13 06:33:25,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:33:25,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1712682629, now seen corresponding path program 1 times [2024-09-13 06:33:25,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:33:25,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980963334] [2024-09-13 06:33:25,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:33:25,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:33:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:25,212 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 06:33:25,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:33:25,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980963334] [2024-09-13 06:33:25,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980963334] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:33:25,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:33:25,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 06:33:25,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443169986] [2024-09-13 06:33:25,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:33:25,214 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 06:33:25,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:33:25,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 06:33:25,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 06:33:25,215 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:33:25,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:33:25,230 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2024-09-13 06:33:25,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 06:33:25,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-09-13 06:33:25,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:33:25,231 INFO L225 Difference]: With dead ends: 25 [2024-09-13 06:33:25,231 INFO L226 Difference]: Without dead ends: 25 [2024-09-13 06:33:25,231 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 06:33:25,232 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 06:33:25,232 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 06:33:25,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-13 06:33:25,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-09-13 06:33:25,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-13 06:33:25,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-09-13 06:33:25,241 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 8 [2024-09-13 06:33:25,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:33:25,241 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-09-13 06:33:25,241 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:33:25,242 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-09-13 06:33:25,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-13 06:33:25,242 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:33:25,243 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:33:25,243 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-13 06:33:25,243 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_26_to_34_0Err0REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0REQUIRES_VIOLATIONPRE_CONDITION, func_to_recursive_line_26_to_34_0Err0REQUIRES_VIOLATIONPRE_CONDITION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-13 06:33:25,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:33:25,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1570114581, now seen corresponding path program 1 times [2024-09-13 06:33:25,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:33:25,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22288250] [2024-09-13 06:33:25,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:33:25,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:33:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 06:33:25,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2047449897] [2024-09-13 06:33:25,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:33:25,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:33:25,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:33:25,304 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 06:33:25,306 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 06:33:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:25,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-13 06:33:25,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:33:25,459 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-09-13 06:33:25,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2024-09-13 06:33:25,495 INFO L349 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2024-09-13 06:33:25,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 61 [2024-09-13 06:33:25,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 34 [2024-09-13 06:33:25,518 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-09-13 06:33:25,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 40 [2024-09-13 06:33:25,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2024-09-13 06:33:25,555 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 06:33:25,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2024-09-13 06:33:25,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:25,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:25,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:25,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 99 [2024-09-13 06:33:25,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:25,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:25,614 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-09-13 06:33:25,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2024-09-13 06:33:25,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 45 [2024-09-13 06:33:25,667 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-09-13 06:33:25,734 INFO L349 Elim1Store]: treesize reduction 50, result has 44.4 percent of original size [2024-09-13 06:33:25,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 100 [2024-09-13 06:33:25,811 INFO L349 Elim1Store]: treesize reduction 64, result has 29.7 percent of original size [2024-09-13 06:33:25,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 61 treesize of output 106 [2024-09-13 06:33:25,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 8 [2024-09-13 06:33:26,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:33:26,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22288250] [2024-09-13 06:33:26,095 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 06:33:26,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047449897] [2024-09-13 06:33:26,095 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-09-13 06:33:26,112 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 06:33:26,296 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 06:33:26,297 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: no need to replace index at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:331) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructDerEnabler(DerPreprocessor.java:186) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:153) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:122) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:543) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:522) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:515) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:326) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:298) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:410) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:327) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:421) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-09-13 06:33:26,301 INFO L158 Benchmark]: Toolchain (without parser) took 3566.72ms. Allocated memory was 174.1MB in the beginning and 222.3MB in the end (delta: 48.2MB). Free memory was 138.6MB in the beginning and 180.2MB in the end (delta: -41.6MB). Peak memory consumption was 93.5MB. Max. memory is 16.1GB. [2024-09-13 06:33:26,301 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 104.9MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 06:33:26,302 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 174.1MB. Free memory is still 140.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 06:33:26,302 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.00ms. Allocated memory is still 174.1MB. Free memory was 138.6MB in the beginning and 124.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-13 06:33:26,302 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.83ms. Allocated memory is still 174.1MB. Free memory was 124.0MB in the beginning and 121.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 06:33:26,303 INFO L158 Benchmark]: Boogie Preprocessor took 58.62ms. Allocated memory is still 174.1MB. Free memory was 121.9MB in the beginning and 119.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 06:33:26,303 INFO L158 Benchmark]: RCFGBuilder took 474.11ms. Allocated memory is still 174.1MB. Free memory was 119.8MB in the beginning and 132.1MB in the end (delta: -12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-09-13 06:33:26,304 INFO L158 Benchmark]: TraceAbstraction took 2711.70ms. Allocated memory was 174.1MB in the beginning and 222.3MB in the end (delta: 48.2MB). Free memory was 131.1MB in the beginning and 180.2MB in the end (delta: -49.1MB). Peak memory consumption was 89.0MB. Max. memory is 16.1GB. [2024-09-13 06:33:26,305 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 104.9MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.17ms. Allocated memory is still 174.1MB. Free memory is still 140.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.00ms. Allocated memory is still 174.1MB. Free memory was 138.6MB in the beginning and 124.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.83ms. Allocated memory is still 174.1MB. Free memory was 124.0MB in the beginning and 121.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.62ms. Allocated memory is still 174.1MB. Free memory was 121.9MB in the beginning and 119.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 474.11ms. Allocated memory is still 174.1MB. Free memory was 119.8MB in the beginning and 132.1MB in the end (delta: -12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2711.70ms. Allocated memory was 174.1MB in the beginning and 222.3MB in the end (delta: 48.2MB). Free memory was 131.1MB in the beginning and 180.2MB in the end (delta: -49.1MB). Peak memory consumption was 89.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: no need to replace index de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: no need to replace index: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:331) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-09-13 06:33:26,330 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/recursified_nla-digbench/recursified_ps3-ll.c ../results/automizer-verification-files/SV-COMP24_unreach-call/recursified_ps3-ll.yml/witness-2.1.yml -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Bitvector.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 06:33:28,387 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 06:33:28,463 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-09-13 06:33:28,469 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 06:33:28,469 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 06:33:28,501 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 06:33:28,503 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 06:33:28,503 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 06:33:28,504 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 06:33:28,504 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 06:33:28,504 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 06:33:28,505 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 06:33:28,505 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 06:33:28,505 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 06:33:28,506 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 06:33:28,509 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 06:33:28,509 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 06:33:28,510 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 06:33:28,510 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 06:33:28,510 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 06:33:28,513 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 06:33:28,514 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 06:33:28,514 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 06:33:28,514 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-09-13 06:33:28,514 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-09-13 06:33:28,515 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 06:33:28,515 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-09-13 06:33:28,515 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 06:33:28,515 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 06:33:28,516 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 06:33:28,516 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 06:33:28,516 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 06:33:28,516 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 06:33:28,519 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 06:33:28,519 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 06:33:28,519 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 06:33:28,520 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 06:33:28,520 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 06:33:28,520 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-09-13 06:33:28,520 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-09-13 06:33:28,520 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 06:33:28,521 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 06:33:28,522 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 06:33:28,522 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 06:33:28,522 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-09-13 06:33:28,522 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 06:33:28,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 06:33:28,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 06:33:28,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 06:33:28,814 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 06:33:28,815 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 06:33:28,816 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/recursified_ps3-ll.yml/witness-2.1.yml [2024-09-13 06:33:28,880 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 06:33:28,881 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 06:33:28,881 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.c [2024-09-13 06:33:30,381 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 06:33:30,547 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 06:33:30,548 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.c [2024-09-13 06:33:30,556 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/afadb6579/60f4900dadb643beb2c8e283ed94979c/FLAG23b8f6fe4 [2024-09-13 06:33:30,580 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/afadb6579/60f4900dadb643beb2c8e283ed94979c [2024-09-13 06:33:30,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 06:33:30,583 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 06:33:30,584 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 06:33:30,585 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 06:33:30,589 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 06:33:30,590 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 06:33:28" (1/2) ... [2024-09-13 06:33:30,595 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eb6b102 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:33:30, skipping insertion in model container [2024-09-13 06:33:30,597 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 06:33:28" (1/2) ... [2024-09-13 06:33:30,598 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1aa96345 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:33:30, skipping insertion in model container [2024-09-13 06:33:30,598 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 06:33:30" (2/2) ... [2024-09-13 06:33:30,599 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eb6b102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:33:30, skipping insertion in model container [2024-09-13 06:33:30,599 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 06:33:30" (2/2) ... [2024-09-13 06:33:30,605 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 06:33:30,606 INFO L1541 ArrayList]: Function contract at [L31]: requires (1 <= \old(cond)), ensures (1 <= \old(cond)) [2024-09-13 06:33:30,624 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 06:33:30,783 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/recursified_nla-digbench/recursified_ps3-ll.c[987,1000] [2024-09-13 06:33:30,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 06:33:30,824 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-09-13 06:33:30,864 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/recursified_nla-digbench/recursified_ps3-ll.c[987,1000] [2024-09-13 06:33:30,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 06:33:30,901 INFO L204 MainTranslator]: Completed translation [2024-09-13 06:33:30,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:33:30 WrapperNode [2024-09-13 06:33:30,902 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 06:33:30,903 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 06:33:30,903 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 06:33:30,903 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 06:33:30,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:33:30" (1/1) ... [2024-09-13 06:33:30,923 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:33:30" (1/1) ... [2024-09-13 06:33:30,946 INFO L138 Inliner]: procedures = 20, calls = 51, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2024-09-13 06:33:30,947 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 06:33:30,948 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 06:33:30,948 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 06:33:30,949 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 06:33:30,968 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:33:30" (1/1) ... [2024-09-13 06:33:30,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:33:30" (1/1) ... [2024-09-13 06:33:30,974 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:33:30" (1/1) ... [2024-09-13 06:33:30,992 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure __VERIFIER_assert is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-13 06:33:30,992 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:33:30" (1/1) ... [2024-09-13 06:33:30,992 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:33:30" (1/1) ... [2024-09-13 06:33:30,998 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:33:30" (1/1) ... [2024-09-13 06:33:31,002 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:33:30" (1/1) ... [2024-09-13 06:33:31,004 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:33:30" (1/1) ... [2024-09-13 06:33:31,005 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:33:30" (1/1) ... [2024-09-13 06:33:31,009 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 06:33:31,013 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 06:33:31,013 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 06:33:31,013 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 06:33:31,014 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:33:30" (1/1) ... [2024-09-13 06:33:31,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 06:33:31,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:33:31,046 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 06:33:31,050 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 06:33:31,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 06:33:31,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-09-13 06:33:31,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-13 06:33:31,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2024-09-13 06:33:31,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2024-09-13 06:33:31,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 06:33:31,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 06:33:31,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2024-09-13 06:33:31,094 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_26_to_34_0 [2024-09-13 06:33:31,094 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_26_to_34_0 [2024-09-13 06:33:31,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 06:33:31,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 06:33:31,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2024-09-13 06:33:31,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-13 06:33:31,173 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 06:33:31,175 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 06:33:33,222 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-13 06:33:33,267 INFO L? ?]: Removed 34 outVars from TransFormulas that were not future-live. [2024-09-13 06:33:33,269 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 06:33:33,300 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 06:33:33,300 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-13 06:33:33,300 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 06:33:33 BoogieIcfgContainer [2024-09-13 06:33:33,300 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 06:33:33,303 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 06:33:33,303 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 06:33:33,306 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 06:33:33,307 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 06:33:28" (1/4) ... [2024-09-13 06:33:33,307 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea3d5c8 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 06:33:33, skipping insertion in model container [2024-09-13 06:33:33,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 06:33:30" (2/4) ... [2024-09-13 06:33:33,308 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea3d5c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 06:33:33, skipping insertion in model container [2024-09-13 06:33:33,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:33:30" (3/4) ... [2024-09-13 06:33:33,308 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea3d5c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 06:33:33, skipping insertion in model container [2024-09-13 06:33:33,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 06:33:33" (4/4) ... [2024-09-13 06:33:33,309 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_ps3-ll.c [2024-09-13 06:33:33,332 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 06:33:33,332 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-09-13 06:33:33,379 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 06:33:33,388 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;@405c960f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 06:33:33,388 INFO L337 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-09-13 06:33:33,392 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 17 states have internal predecessors, (19), 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 06:33:33,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-13 06:33:33,400 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:33:33,401 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-13 06:33:33,401 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_26_to_34_0Err0REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0REQUIRES_VIOLATIONPRE_CONDITION, func_to_recursive_line_26_to_34_0Err0REQUIRES_VIOLATIONPRE_CONDITION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-13 06:33:33,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:33:33,410 INFO L85 PathProgramCache]: Analyzing trace with hash 74160820, now seen corresponding path program 1 times [2024-09-13 06:33:33,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-13 06:33:33,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610034168] [2024-09-13 06:33:33,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:33:33,424 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 06:33:33,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-13 06:33:33,428 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-09-13 06:33:33,429 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-09-13 06:33:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:33,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-13 06:33:33,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:33:34,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:34,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:34,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:34,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:34,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:34,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:37,018 INFO L349 Elim1Store]: treesize reduction 504, result has 19.4 percent of original size [2024-09-13 06:33:37,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 8 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 11 new quantified variables, introduced 8 case distinctions, treesize of input 406 treesize of output 1171 [2024-09-13 06:33:37,171 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:37,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 38 [2024-09-13 06:33:37,408 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:37,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 38 [2024-09-13 06:33:37,645 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:37,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 38 [2024-09-13 06:33:37,923 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2024-09-13 06:33:37,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 134 [2024-09-13 06:33:38,473 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:38,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 157 treesize of output 94 [2024-09-13 06:33:38,841 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:38,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 157 treesize of output 94 [2024-09-13 06:33:39,319 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:39,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 157 treesize of output 94 [2024-09-13 06:33:46,346 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:46,404 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:46,556 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:47,549 INFO L224 Elim1Store]: Index analysis took 1365 ms [2024-09-13 06:33:47,977 INFO L349 Elim1Store]: treesize reduction 203, result has 7.7 percent of original size [2024-09-13 06:33:47,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 7 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 16 case distinctions, treesize of input 1502 treesize of output 1840 [2024-09-13 06:33:55,347 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:55,348 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:55,367 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:55,369 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:55,375 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:55,376 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:55,382 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:55,388 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:55,401 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:55,403 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:55,405 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:55,407 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:55,416 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:55,422 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:55,449 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:55,466 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:55,490 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:55,490 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:55,503 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:55,503 INFO L224 Elim1Store]: Index analysis took 162 ms [2024-09-13 06:33:55,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 361 [2024-09-13 06:33:56,070 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,107 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,117 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,173 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,175 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,196 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,198 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,208 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,211 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,221 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,223 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,224 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,226 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,228 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,231 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,233 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,246 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,257 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,258 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,281 INFO L224 Elim1Store]: Index analysis took 225 ms [2024-09-13 06:33:56,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 361 [2024-09-13 06:33:56,902 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,904 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,943 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,945 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,951 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,952 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,953 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,959 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,964 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,965 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,967 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,968 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,975 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:56,981 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:57,005 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:57,021 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:57,045 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:57,046 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:57,060 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:57,061 INFO L224 Elim1Store]: Index analysis took 160 ms [2024-09-13 06:33:57,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 361 [2024-09-13 06:34:19,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:19,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:19,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:20,412 INFO L349 Elim1Store]: treesize reduction 100, result has 24.2 percent of original size [2024-09-13 06:34:20,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 20717 treesize of output 20657 [2024-09-13 06:34:20,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:20,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:20,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:20,673 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:34:21,910 INFO L349 Elim1Store]: treesize reduction 181, result has 23.3 percent of original size [2024-09-13 06:34:21,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 6248 treesize of output 5036 [2024-09-13 06:34:39,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:39,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:39,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:39,305 INFO L349 Elim1Store]: treesize reduction 42, result has 26.3 percent of original size [2024-09-13 06:34:39,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 1196 treesize of output 1241 [2024-09-13 06:34:39,941 INFO L349 Elim1Store]: treesize reduction 45, result has 2.2 percent of original size [2024-09-13 06:34:39,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 16 [2024-09-13 06:34:41,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:41,405 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 06:34:41,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 358 treesize of output 370 [2024-09-13 06:34:42,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 24 [2024-09-13 06:34:42,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2024-09-13 06:34:42,061 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 06:34:42,062 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 06:34:42,062 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-13 06:34:42,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610034168] [2024-09-13 06:34:42,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610034168] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:34:42,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:34:42,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-13 06:34:42,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319524376] [2024-09-13 06:34:42,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:34:42,068 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 06:34:42,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-13 06:34:42,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 06:34:42,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-13 06:34:42,100 INFO L87 Difference]: Start difference. First operand has 23 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 17 states have internal predecessors, (19), 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) Second operand has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:34:44,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:34:44,198 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2024-09-13 06:34:44,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 06:34:44,200 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-09-13 06:34:44,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:34:44,205 INFO L225 Difference]: With dead ends: 27 [2024-09-13 06:34:44,205 INFO L226 Difference]: Without dead ends: 25 [2024-09-13 06:34:44,206 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=18, Invalid=37, Unknown=1, NotChecked=0, Total=56 [2024-09-13 06:34:44,208 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 3 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-09-13 06:34:44,209 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 80 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 2 Unknown, 0 Unchecked, 1.3s Time] [2024-09-13 06:34:44,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-13 06:34:44,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2024-09-13 06:34:44,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.2) internal successors, (18), 18 states have internal predecessors, (18), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 06:34:44,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-09-13 06:34:44,239 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 5 [2024-09-13 06:34:44,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:34:44,240 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-09-13 06:34:44,240 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:34:44,240 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-09-13 06:34:44,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-13 06:34:44,241 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:34:44,241 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:34:44,253 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-09-13 06:34:44,442 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 06:34:44,443 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0REQUIRES_VIOLATIONPRE_CONDITION, func_to_recursive_line_26_to_34_0Err0REQUIRES_VIOLATIONPRE_CONDITION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-13 06:34:44,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:34:44,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1712682790, now seen corresponding path program 1 times [2024-09-13 06:34:44,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-13 06:34:44,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073530696] [2024-09-13 06:34:44,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:34:44,444 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 06:34:44,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-13 06:34:44,447 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-09-13 06:34:44,449 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-09-13 06:34:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:34:44,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-09-13 06:34:44,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:34:44,580 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 06:34:44,580 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 06:34:44,580 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-13 06:34:44,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073530696] [2024-09-13 06:34:44,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073530696] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:34:44,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:34:44,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 06:34:44,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494656589] [2024-09-13 06:34:44,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:34:44,582 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 06:34:44,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-13 06:34:44,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 06:34:44,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 06:34:44,583 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:34:46,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:34:46,606 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2024-09-13 06:34:46,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 06:34:46,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-09-13 06:34:46,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:34:46,632 INFO L225 Difference]: With dead ends: 23 [2024-09-13 06:34:46,632 INFO L226 Difference]: Without dead ends: 23 [2024-09-13 06:34:46,633 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 06:34:46,635 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-09-13 06:34:46,635 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 31 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-09-13 06:34:46,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-13 06:34:46,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-13 06:34:46,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 17 states have internal predecessors, (17), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 06:34:46,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-09-13 06:34:46,639 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 8 [2024-09-13 06:34:46,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:34:46,640 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-09-13 06:34:46,640 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:34:46,640 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-09-13 06:34:46,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-13 06:34:46,640 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:34:46,640 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:34:46,648 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-09-13 06:34:46,841 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 06:34:46,841 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0REQUIRES_VIOLATIONPRE_CONDITION, func_to_recursive_line_26_to_34_0Err0REQUIRES_VIOLATIONPRE_CONDITION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-13 06:34:46,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:34:46,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1712682629, now seen corresponding path program 1 times [2024-09-13 06:34:46,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-13 06:34:46,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68211122] [2024-09-13 06:34:46,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:34:46,843 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 06:34:46,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-13 06:34:46,844 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-09-13 06:34:46,847 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-09-13 06:34:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:34:46,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-13 06:34:46,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:34:47,017 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 06:34:47,017 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 06:34:47,017 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-13 06:34:47,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68211122] [2024-09-13 06:34:47,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68211122] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:34:47,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:34:47,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 06:34:47,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735612679] [2024-09-13 06:34:47,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:34:47,018 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 06:34:47,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-13 06:34:47,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 06:34:47,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 06:34:47,019 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:34:47,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:34:47,150 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2024-09-13 06:34:47,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 06:34:47,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-09-13 06:34:47,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:34:47,151 INFO L225 Difference]: With dead ends: 21 [2024-09-13 06:34:47,151 INFO L226 Difference]: Without dead ends: 21 [2024-09-13 06:34:47,151 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 06:34:47,152 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:34:47,152 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:34:47,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-13 06:34:47,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-09-13 06:34:47,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 06:34:47,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2024-09-13 06:34:47,156 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 8 [2024-09-13 06:34:47,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:34:47,157 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2024-09-13 06:34:47,157 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:34:47,157 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2024-09-13 06:34:47,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-13 06:34:47,158 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:34:47,158 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:34:47,166 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-09-13 06:34:47,358 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 06:34:47,359 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_26_to_34_0Err0REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0REQUIRES_VIOLATIONPRE_CONDITION, func_to_recursive_line_26_to_34_0Err0REQUIRES_VIOLATIONPRE_CONDITION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-13 06:34:47,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:34:47,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1570114581, now seen corresponding path program 1 times [2024-09-13 06:34:47,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-13 06:34:47,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131385753] [2024-09-13 06:34:47,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:34:47,360 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 06:34:47,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-13 06:34:47,361 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-09-13 06:34:47,362 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process Killed by 15