./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound1.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/lcm2_unwindbound1.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version de325976 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/nla-digbench-scaling/lcm2_unwindbound1.c ../results/automizer-verification-files/SV-COMP24_unreach-call/lcm2_unwindbound1.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-tmp.dk.referee-eval-de32597-m [2024-09-17 19:49:28,507 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-17 19:49:28,580 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-17 19:49:28,583 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-17 19:49:28,584 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-17 19:49:28,609 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-17 19:49:28,609 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-17 19:49:28,610 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-17 19:49:28,610 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-17 19:49:28,611 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-17 19:49:28,611 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-17 19:49:28,611 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-17 19:49:28,612 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-17 19:49:28,613 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-17 19:49:28,614 INFO L153 SettingsManager]: * Use SBE=true [2024-09-17 19:49:28,614 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-17 19:49:28,615 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-17 19:49:28,618 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-17 19:49:28,618 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-17 19:49:28,618 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-17 19:49:28,619 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-17 19:49:28,619 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-17 19:49:28,620 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-17 19:49:28,620 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-17 19:49:28,620 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-17 19:49:28,621 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-17 19:49:28,621 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-17 19:49:28,621 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-17 19:49:28,622 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-17 19:49:28,622 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-17 19:49:28,622 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-17 19:49:28,623 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-17 19:49:28,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:49:28,624 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-17 19:49:28,624 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-17 19:49:28,625 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-17 19:49:28,625 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-17 19:49:28,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-17 19:49:28,625 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-17 19:49:28,626 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-17 19:49:28,626 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-17 19:49:28,626 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-17 19:49:28,627 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-17 19:49:28,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-17 19:49:28,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-17 19:49:28,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-17 19:49:28,903 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-17 19:49:28,906 INFO L274 PluginConnector]: CDTParser initialized [2024-09-17 19:49:28,907 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound1.c [2024-09-17 19:49:30,269 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-17 19:49:30,452 INFO L384 CDTParser]: Found 1 translation units. [2024-09-17 19:49:30,452 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound1.c [2024-09-17 19:49:30,459 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/ffeabfcfb/31d811b64c4d4ee6bd451690f95e574f/FLAG248369e22 [2024-09-17 19:49:30,472 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/ffeabfcfb/31d811b64c4d4ee6bd451690f95e574f [2024-09-17 19:49:30,476 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-17 19:49:30,477 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-17 19:49:30,478 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/lcm2_unwindbound1.yml/witness-2.1.yml [2024-09-17 19:49:30,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-17 19:49:30,523 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-17 19:49:30,525 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-17 19:49:30,525 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-17 19:49:30,530 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-17 19:49:30,531 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:49:30" (1/2) ... [2024-09-17 19:49:30,533 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26b574e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:49:30, skipping insertion in model container [2024-09-17 19:49:30,533 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:49:30" (1/2) ... [2024-09-17 19:49:30,535 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2a7e7e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:49:30, skipping insertion in model container [2024-09-17 19:49:30,535 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 17.09 07:49:30" (2/2) ... [2024-09-17 19:49:30,535 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26b574e7 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:49:30, skipping insertion in model container [2024-09-17 19:49:30,535 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 17.09 07:49:30" (2/2) ... [2024-09-17 19:49:30,545 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-17 19:49:30,546 INFO L1541 ArrayList]: Loop invariant at [L36-L49] (((((b * a) % 2147483648) * 2) == ((y * v) + (x * u))) && (\old(counter) == 0)) [2024-09-17 19:49:30,546 INFO L1541 ArrayList]: Function contract at [L20]: requires (counter == 0), ensures (\old(counter) == 0) [2024-09-17 19:49:30,547 INFO L1541 ArrayList]: Function contract at [L11]: requires (1 <= \old(cond)), ensures (1 <= \old(cond)) [2024-09-17 19:49:30,547 INFO L1541 ArrayList]: Function contract at [L8]: requires (counter == 0), ensures (counter == 0) [2024-09-17 19:49:30,566 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-17 19:49:30,697 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound1.c[537,550] [2024-09-17 19:49:30,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:49:30,722 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global Start Parsing Global Start Parsing Global [2024-09-17 19:49:30,753 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound1.c[537,550] Start Parsing Global Start Parsing Global Start Parsing Local [2024-09-17 19:49:30,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:49:30,776 INFO L204 MainTranslator]: Completed translation [2024-09-17 19:49:30,776 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:49:30 WrapperNode [2024-09-17 19:49:30,776 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-17 19:49:30,777 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-17 19:49:30,777 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-17 19:49:30,777 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-17 19:49:30,783 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 17.09 07:49:30" (1/1) ... [2024-09-17 19:49:30,790 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 17.09 07:49:30" (1/1) ... [2024-09-17 19:49:30,811 INFO L138 Inliner]: procedures = 14, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 57 [2024-09-17 19:49:30,811 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-17 19:49:30,812 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-17 19:49:30,812 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-17 19:49:30,812 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-17 19:49:30,823 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 17.09 07:49:30" (1/1) ... [2024-09-17 19:49:30,823 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 17.09 07:49:30" (1/1) ... [2024-09-17 19:49:30,825 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 17.09 07:49:30" (1/1) ... [2024-09-17 19:49:30,834 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure assume_abort_if_not is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-17 19:49:30,838 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 17.09 07:49:30" (1/1) ... [2024-09-17 19:49:30,838 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 17.09 07:49:30" (1/1) ... [2024-09-17 19:49:30,841 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 17.09 07:49:30" (1/1) ... [2024-09-17 19:49:30,848 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 17.09 07:49:30" (1/1) ... [2024-09-17 19:49:30,852 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 17.09 07:49:30" (1/1) ... [2024-09-17 19:49:30,853 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 17.09 07:49:30" (1/1) ... [2024-09-17 19:49:30,854 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-17 19:49:30,859 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-17 19:49:30,859 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-17 19:49:30,859 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-17 19:49:30,860 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 17.09 07:49:30" (1/1) ... [2024-09-17 19:49:30,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:49:30,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:49:30,892 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) [2024-09-17 19:49:30,901 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 [2024-09-17 19:49:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-17 19:49:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-17 19:49:30,943 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-17 19:49:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-17 19:49:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-17 19:49:30,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-17 19:49:30,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-17 19:49:30,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-17 19:49:31,009 INFO L242 CfgBuilder]: Building ICFG [2024-09-17 19:49:31,015 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-17 19:49:31,282 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-17 19:49:31,291 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-17 19:49:31,325 INFO L? ?]: Removed 32 outVars from TransFormulas that were not future-live. [2024-09-17 19:49:31,325 INFO L291 CfgBuilder]: Performing block encoding [2024-09-17 19:49:31,355 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-17 19:49:31,356 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-17 19:49:31,357 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:49:31 BoogieIcfgContainer [2024-09-17 19:49:31,357 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-17 19:49:31,376 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-17 19:49:31,376 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-17 19:49:31,379 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-17 19:49:31,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 07:49:30" (1/4) ... [2024-09-17 19:49:31,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40547ee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 07:49:31, skipping insertion in model container [2024-09-17 19:49:31,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 17.09 07:49:30" (2/4) ... [2024-09-17 19:49:31,384 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40547ee7 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 17.09 07:49:31, skipping insertion in model container [2024-09-17 19:49:31,385 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 17.09 07:49:30" (3/4) ... [2024-09-17 19:49:31,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40547ee7 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 17.09 07:49:31, skipping insertion in model container [2024-09-17 19:49:31,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:49:31" (4/4) ... [2024-09-17 19:49:31,386 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm2_unwindbound1.c [2024-09-17 19:49:31,404 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-17 19:49:31,404 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-09-17 19:49:31,474 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-17 19:49:31,483 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;@700e8b3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-17 19:49:31,483 INFO L337 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-09-17 19:49:31,487 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 29 states have internal predecessors, (35), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-17 19:49:31,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-09-17 19:49:31,494 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:49:31,495 INFO L216 NwaCegarLoop]: trace histogram [1, 1] [2024-09-17 19:49:31,495 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-17 19:49:31,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:49:31,503 INFO L85 PathProgramCache]: Analyzing trace with hash 3568, now seen corresponding path program 1 times [2024-09-17 19:49:31,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:49:31,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072451436] [2024-09-17 19:49:31,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:49:31,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:49:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:49:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:49:31,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:49:31,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072451436] [2024-09-17 19:49:31,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072451436] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:49:31,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:49:31,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-09-17 19:49:31,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342750361] [2024-09-17 19:49:31,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:49:31,680 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-17 19:49:31,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:49:31,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-17 19:49:31,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-17 19:49:31,713 INFO L87 Difference]: Start difference. First operand has 38 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 29 states have internal predecessors, (35), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:49:31,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:49:31,754 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2024-09-17 19:49:31,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-17 19:49:31,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2024-09-17 19:49:31,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:49:31,765 INFO L225 Difference]: With dead ends: 35 [2024-09-17 19:49:31,765 INFO L226 Difference]: Without dead ends: 34 [2024-09-17 19:49:31,767 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-17 19:49:31,772 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 15 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:49:31,773 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 52 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:49:31,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-17 19:49:31,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2024-09-17 19:49:31,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 22 states have internal predecessors, (25), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-17 19:49:31,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2024-09-17 19:49:31,803 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 2 [2024-09-17 19:49:31,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:49:31,804 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2024-09-17 19:49:31,804 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:49:31,804 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2024-09-17 19:49:31,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-17 19:49:31,805 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:49:31,806 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:49:31,806 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-17 19:49:31,807 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-17 19:49:31,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:49:31,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1529006107, now seen corresponding path program 1 times [2024-09-17 19:49:31,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:49:31,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955087176] [2024-09-17 19:49:31,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:49:31,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:49:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:49:31,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1383618638] [2024-09-17 19:49:31,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:49:31,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:49:31,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:49:31,863 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) [2024-09-17 19:49:31,864 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-17 19:49:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:49:31,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-17 19:49:32,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:49:32,106 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-17 19:49:32,107 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 19:49:32,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:49:32,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955087176] [2024-09-17 19:49:32,108 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:49:32,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383618638] [2024-09-17 19:49:32,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383618638] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:49:32,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:49:32,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-17 19:49:32,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627410047] [2024-09-17 19:49:32,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:49:32,112 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-17 19:49:32,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:49:32,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-17 19:49:32,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-17 19:49:32,115 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-17 19:49:32,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:49:32,208 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2024-09-17 19:49:32,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-17 19:49:32,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2024-09-17 19:49:32,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:49:32,210 INFO L225 Difference]: With dead ends: 39 [2024-09-17 19:49:32,210 INFO L226 Difference]: Without dead ends: 35 [2024-09-17 19:49:32,210 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-17 19:49:32,211 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 27 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:49:32,212 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 44 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:49:32,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-17 19:49:32,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2024-09-17 19:49:32,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 21 states have (on average 1.380952380952381) internal successors, (29), 25 states have internal predecessors, (29), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-17 19:49:32,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2024-09-17 19:49:32,221 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 24 [2024-09-17 19:49:32,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:49:32,222 INFO L474 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2024-09-17 19:49:32,222 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-17 19:49:32,223 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2024-09-17 19:49:32,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-17 19:49:32,223 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:49:32,224 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:49:32,231 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-17 19:49:32,425 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:49:32,425 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-17 19:49:32,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:49:32,426 INFO L85 PathProgramCache]: Analyzing trace with hash -995696217, now seen corresponding path program 1 times [2024-09-17 19:49:32,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:49:32,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075967880] [2024-09-17 19:49:32,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:49:32,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:49:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:49:32,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:49:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:49:32,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-17 19:49:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:49:32,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-17 19:49:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:49:32,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-17 19:49:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:49:32,693 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-17 19:49:32,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:49:32,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075967880] [2024-09-17 19:49:32,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075967880] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:49:32,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:49:32,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-17 19:49:32,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798279683] [2024-09-17 19:49:32,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:49:32,696 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-17 19:49:32,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:49:32,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-17 19:49:32,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-17 19:49:32,701 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-17 19:49:32,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:49:32,725 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2024-09-17 19:49:32,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-17 19:49:32,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2024-09-17 19:49:32,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:49:32,727 INFO L225 Difference]: With dead ends: 34 [2024-09-17 19:49:32,728 INFO L226 Difference]: Without dead ends: 34 [2024-09-17 19:49:32,728 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-17 19:49:32,729 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:49:32,731 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 70 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:49:32,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-17 19:49:32,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-09-17 19:49:32,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 25 states have internal predecessors, (28), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-17 19:49:32,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2024-09-17 19:49:32,735 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 30 [2024-09-17 19:49:32,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:49:32,738 INFO L474 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2024-09-17 19:49:32,738 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-17 19:49:32,738 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-09-17 19:49:32,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-17 19:49:32,739 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:49:32,739 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:49:32,740 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-17 19:49:32,740 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-17 19:49:32,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:49:32,740 INFO L85 PathProgramCache]: Analyzing trace with hash -993908757, now seen corresponding path program 1 times [2024-09-17 19:49:32,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:49:32,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958467298] [2024-09-17 19:49:32,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:49:32,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:49:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:49:32,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:49:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:49:32,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-17 19:49:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:49:32,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-17 19:49:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:49:32,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-17 19:49:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:49:32,835 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-17 19:49:32,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:49:32,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958467298] [2024-09-17 19:49:32,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958467298] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:49:32,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:49:32,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-17 19:49:32,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902253752] [2024-09-17 19:49:32,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:49:32,839 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-17 19:49:32,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:49:32,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-17 19:49:32,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-17 19:49:32,840 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-17 19:49:32,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:49:32,892 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2024-09-17 19:49:32,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-17 19:49:32,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2024-09-17 19:49:32,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:49:32,895 INFO L225 Difference]: With dead ends: 33 [2024-09-17 19:49:32,896 INFO L226 Difference]: Without dead ends: 33 [2024-09-17 19:49:32,896 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-17 19:49:32,897 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 3 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:49:32,899 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 51 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:49:32,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-17 19:49:32,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-09-17 19:49:32,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 24 states have internal predecessors, (27), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-17 19:49:32,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2024-09-17 19:49:32,905 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 30 [2024-09-17 19:49:32,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:49:32,906 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2024-09-17 19:49:32,906 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-17 19:49:32,906 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2024-09-17 19:49:32,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-17 19:49:32,907 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:49:32,907 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:49:32,907 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-17 19:49:32,908 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-17 19:49:32,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:49:32,908 INFO L85 PathProgramCache]: Analyzing trace with hash -993908918, now seen corresponding path program 1 times [2024-09-17 19:49:32,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:49:32,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161006072] [2024-09-17 19:49:32,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:49:32,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:49:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:49:32,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:49:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:49:33,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-17 19:49:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:49:33,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-17 19:49:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:49:33,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-17 19:49:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:49:33,010 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-17 19:49:33,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:49:33,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161006072] [2024-09-17 19:49:33,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161006072] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:49:33,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:49:33,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-17 19:49:33,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352626127] [2024-09-17 19:49:33,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:49:33,011 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-17 19:49:33,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:49:33,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-17 19:49:33,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-17 19:49:33,013 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-17 19:49:33,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:49:33,022 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2024-09-17 19:49:33,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-17 19:49:33,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2024-09-17 19:49:33,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:49:33,023 INFO L225 Difference]: With dead ends: 31 [2024-09-17 19:49:33,024 INFO L226 Difference]: Without dead ends: 30 [2024-09-17 19:49:33,024 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-17 19:49:33,025 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:49:33,025 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:49:33,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-17 19:49:33,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-17 19:49:33,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-17 19:49:33,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2024-09-17 19:49:33,029 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 30 [2024-09-17 19:49:33,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:49:33,030 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-09-17 19:49:33,030 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-17 19:49:33,030 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2024-09-17 19:49:33,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-17 19:49:33,031 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:49:33,031 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:49:33,031 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-17 19:49:33,032 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-17 19:49:33,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:49:33,032 INFO L85 PathProgramCache]: Analyzing trace with hash -966954651, now seen corresponding path program 1 times [2024-09-17 19:49:33,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:49:33,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096081019] [2024-09-17 19:49:33,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:49:33,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:49:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:49:33,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [722018006] [2024-09-17 19:49:33,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:49:33,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:49:33,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:49:33,084 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) [2024-09-17 19:49:33,085 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-17 19:49:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:49:33,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-17 19:49:33,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:49:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-17 19:49:33,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:49:34,725 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-17 19:49:34,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:49:34,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096081019] [2024-09-17 19:49:34,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:49:34,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722018006] [2024-09-17 19:49:34,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722018006] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-17 19:49:34,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-17 19:49:34,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2024-09-17 19:49:34,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536020173] [2024-09-17 19:49:34,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:49:34,727 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-17 19:49:34,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:49:34,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-17 19:49:34,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-09-17 19:49:34,728 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-17 19:49:35,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:49:35,569 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2024-09-17 19:49:35,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-17 19:49:35,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2024-09-17 19:49:35,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:49:35,570 INFO L225 Difference]: With dead ends: 27 [2024-09-17 19:49:35,570 INFO L226 Difference]: Without dead ends: 0 [2024-09-17 19:49:35,571 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-09-17 19:49:35,572 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 7 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-17 19:49:35,572 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 33 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-17 19:49:35,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-17 19:49:35,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-17 19:49:35,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:49:35,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-17 19:49:35,573 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2024-09-17 19:49:35,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:49:35,573 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-17 19:49:35,573 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-17 19:49:35,573 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-17 19:49:35,573 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-17 19:49:35,575 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION (11 of 12 remaining) [2024-09-17 19:49:35,576 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION (10 of 12 remaining) [2024-09-17 19:49:35,576 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (9 of 12 remaining) [2024-09-17 19:49:35,576 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONPRE_CONDITION (8 of 12 remaining) [2024-09-17 19:49:35,576 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONPRE_CONDITION (7 of 12 remaining) [2024-09-17 19:49:35,577 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 12 remaining) [2024-09-17 19:49:35,577 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONPRE_CONDITION (5 of 12 remaining) [2024-09-17 19:49:35,577 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONPRE_CONDITION (4 of 12 remaining) [2024-09-17 19:49:35,577 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONPOST_CONDITION (3 of 12 remaining) [2024-09-17 19:49:35,577 INFO L785 garLoopResultBuilder]: Registering result SAFE for location assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION (2 of 12 remaining) [2024-09-17 19:49:35,578 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 12 remaining) [2024-09-17 19:49:35,578 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION (0 of 12 remaining) [2024-09-17 19:49:35,585 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-17 19:49:35,778 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-17 19:49:35,782 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-09-17 19:49:35,784 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-17 19:49:35,788 INFO L469 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-09-17 19:49:35,788 INFO L470 ceAbstractionStarter]: WitnessConsidered=1 [2024-09-17 19:49:35,789 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 07:49:35 BoogieIcfgContainer [2024-09-17 19:49:35,789 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-17 19:49:35,790 INFO L158 Benchmark]: Toolchain (without parser) took 5267.32ms. Allocated memory was 176.2MB in the beginning and 228.6MB in the end (delta: 52.4MB). Free memory was 119.3MB in the beginning and 102.7MB in the end (delta: 16.6MB). Peak memory consumption was 71.4MB. Max. memory is 16.1GB. [2024-09-17 19:49:35,790 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 176.2MB. Free memory is still 136.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 19:49:35,790 INFO L158 Benchmark]: Witness Parser took 0.20ms. Allocated memory is still 176.2MB. Free memory is still 121.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 19:49:35,791 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.77ms. Allocated memory is still 176.2MB. Free memory was 119.3MB in the beginning and 105.4MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-17 19:49:35,791 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.33ms. Allocated memory is still 176.2MB. Free memory was 105.4MB in the beginning and 103.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 19:49:35,791 INFO L158 Benchmark]: Boogie Preprocessor took 45.91ms. Allocated memory is still 176.2MB. Free memory was 103.8MB in the beginning and 102.1MB in the end (delta: 1.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-17 19:49:35,792 INFO L158 Benchmark]: RCFGBuilder took 498.44ms. Allocated memory is still 176.2MB. Free memory was 102.1MB in the beginning and 86.3MB in the end (delta: 15.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-17 19:49:35,792 INFO L158 Benchmark]: TraceAbstraction took 4413.99ms. Allocated memory was 176.2MB in the beginning and 228.6MB in the end (delta: 52.4MB). Free memory was 145.3MB in the beginning and 102.7MB in the end (delta: 42.6MB). Peak memory consumption was 95.9MB. Max. memory is 16.1GB. [2024-09-17 19:49:35,793 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 176.2MB. Free memory is still 136.9MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.20ms. Allocated memory is still 176.2MB. Free memory is still 121.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 251.77ms. Allocated memory is still 176.2MB. Free memory was 119.3MB in the beginning and 105.4MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.33ms. Allocated memory is still 176.2MB. Free memory was 105.4MB in the beginning and 103.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 45.91ms. Allocated memory is still 176.2MB. Free memory was 103.8MB in the beginning and 102.1MB in the end (delta: 1.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 498.44ms. Allocated memory is still 176.2MB. Free memory was 102.1MB in the beginning and 86.3MB in the end (delta: 15.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4413.99ms. Allocated memory was 176.2MB in the beginning and 228.6MB in the end (delta: 52.4MB). Free memory was 145.3MB in the beginning and 102.7MB in the end (delta: 42.6MB). Peak memory consumption was 95.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 8]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 8]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 8]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 8]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 36]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 11]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 11]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 20]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - PositiveResult [Line: 8]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - PositiveResult [Line: 14]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 11]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 38 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 4.3s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 61 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 56 mSDsluCounter, 304 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 144 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 85 IncrementalHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 160 mSDtfsCounter, 85 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 208 NumberOfCodeBlocks, 208 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 177 ConstructedInterpolants, 0 QuantifiedInterpolants, 710 SizeOfPredicates, 1 NumberOfNonLiveVariables, 221 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 136/146 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-17 19:49:35,822 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE