./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/cohendiv-ll_valuebound2.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1d5fa637 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReachWitnessValidation.xml -i ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c ../results/automizer-verification-files/SV-COMP24_unreach-call/cohendiv-ll_valuebound2.yml/witness-2.1.yml -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --- Real Ultimate output --- This is Ultimate 0.2.4-dev-1d5fa63-m [2024-09-13 10:15:36,791 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 10:15:36,869 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 10:15:36,874 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 10:15:36,874 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 10:15:36,894 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 10:15:36,895 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 10:15:36,896 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 10:15:36,896 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 10:15:36,896 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 10:15:36,897 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 10:15:36,897 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 10:15:36,898 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 10:15:36,898 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 10:15:36,899 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 10:15:36,899 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 10:15:36,899 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 10:15:36,900 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 10:15:36,900 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 10:15:36,900 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 10:15:36,901 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 10:15:36,905 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 10:15:36,905 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 10:15:36,905 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 10:15:36,905 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 10:15:36,906 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 10:15:36,906 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 10:15:36,906 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 10:15:36,906 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 10:15:36,907 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 10:15:36,907 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 10:15:36,907 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 10:15:36,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 10:15:36,908 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 10:15:36,908 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 10:15:36,908 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 10:15:36,909 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 10:15:36,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 10:15:36,909 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 10:15:36,909 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 10:15:36,910 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 10:15:36,910 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 10:15:36,910 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 10:15:37,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 10:15:37,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 10:15:37,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 10:15:37,185 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 10:15:37,185 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 10:15:37,186 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c [2024-09-13 10:15:38,580 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 10:15:38,751 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 10:15:38,751 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c [2024-09-13 10:15:38,761 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/e4b76f1a1/0d991113915846ae82cd5fe93dac961a/FLAGe53aade89 [2024-09-13 10:15:38,778 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/e4b76f1a1/0d991113915846ae82cd5fe93dac961a [2024-09-13 10:15:38,780 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 10:15:38,781 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 10:15:38,781 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/cohendiv-ll_valuebound2.yml/witness-2.1.yml [2024-09-13 10:15:38,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 10:15:38,830 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 10:15:38,831 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 10:15:38,831 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 10:15:38,836 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 10:15:38,837 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:15:38" (1/2) ... [2024-09-13 10:15:38,837 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5907508e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:38, skipping insertion in model container [2024-09-13 10:15:38,838 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:15:38" (1/2) ... [2024-09-13 10:15:38,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@711940f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:15:38, skipping insertion in model container [2024-09-13 10:15:38,839 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:15:38" (2/2) ... [2024-09-13 10:15:38,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5907508e and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:15:38, skipping insertion in model container [2024-09-13 10:15:38,840 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:15:38" (2/2) ... [2024-09-13 10:15:38,847 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 10:15:38,847 INFO L1541 ArrayList]: Loop invariant at [L38-L62] ((((((__int128) q * y) + r) == x) && (((((__int128) q * y) + r) + ((__int128) a * y)) == (b + x))) && (1 <= y)) [2024-09-13 10:15:38,847 INFO L1541 ArrayList]: Loop invariant at [L47-L59] (((((((__int128) q * y) + r) == x) && (1 <= r)) && (((((__int128) q * y) + r) + ((__int128) a * y)) == (b + x))) && (1 <= y)) [2024-09-13 10:15:38,848 INFO L1541 ArrayList]: Function contract at [L14]: requires (\old(cond) != 0), ensures (\old(cond) != 0) [2024-09-13 10:15:38,848 INFO L1541 ArrayList]: Function contract at [L11]: requires null, ensures (\old(cond) != 0) [2024-09-13 10:15:38,867 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 10:15:39,020 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c[576,589] [2024-09-13 10:15:39,044 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 10:15:39,051 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global Start Parsing Global [2024-09-13 10:15:39,080 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c[576,589] Start Parsing Local Start Parsing Local [2024-09-13 10:15:39,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 10:15:39,110 INFO L204 MainTranslator]: Completed translation [2024-09-13 10:15:39,110 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:15:39 WrapperNode [2024-09-13 10:15:39,110 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 10:15:39,112 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 10:15:39,112 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 10:15:39,112 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 10:15:39,117 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 10:15:39" (1/1) ... [2024-09-13 10:15:39,123 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 10:15:39" (1/1) ... [2024-09-13 10:15:39,141 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 57 [2024-09-13 10:15:39,141 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 10:15:39,142 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 10:15:39,142 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 10:15:39,142 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 10:15:39,152 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 10:15:39" (1/1) ... [2024-09-13 10:15:39,152 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 10:15:39" (1/1) ... [2024-09-13 10:15:39,156 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 10:15:39" (1/1) ... [2024-09-13 10:15:39,165 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure assume_abort_if_not is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-13 10:15:39,166 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 10:15:39" (1/1) ... [2024-09-13 10:15:39,166 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 10:15:39" (1/1) ... [2024-09-13 10:15:39,171 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 10:15:39" (1/1) ... [2024-09-13 10:15:39,178 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 10:15:39" (1/1) ... [2024-09-13 10:15:39,179 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 10:15:39" (1/1) ... [2024-09-13 10:15:39,180 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 10:15:39" (1/1) ... [2024-09-13 10:15:39,181 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 10:15:39,182 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 10:15:39,182 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 10:15:39,182 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 10:15:39,183 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 10:15:39" (1/1) ... [2024-09-13 10:15:39,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 10:15:39,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:15:39,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-13 10:15:39,219 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-13 10:15:39,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 10:15:39,268 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 10:15:39,268 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 10:15:39,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-13 10:15:39,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 10:15:39,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 10:15:39,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 10:15:39,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 10:15:39,334 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 10:15:39,336 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 10:15:39,496 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-13 10:15:39,521 INFO L? ?]: Removed 45 outVars from TransFormulas that were not future-live. [2024-09-13 10:15:39,521 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 10:15:39,565 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 10:15:39,565 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-13 10:15:39,566 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:15:39 BoogieIcfgContainer [2024-09-13 10:15:39,566 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 10:15:39,569 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 10:15:39,570 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 10:15:39,573 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 10:15:39,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 10:15:38" (1/4) ... [2024-09-13 10:15:39,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@398d7cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 10:15:39, skipping insertion in model container [2024-09-13 10:15:39,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:15:38" (2/4) ... [2024-09-13 10:15:39,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@398d7cde and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 10:15:39, skipping insertion in model container [2024-09-13 10:15:39,575 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 10:15:39" (3/4) ... [2024-09-13 10:15:39,575 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@398d7cde and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 10:15:39, skipping insertion in model container [2024-09-13 10:15:39,585 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 10:15:39" (4/4) ... [2024-09-13 10:15:39,587 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound2.c [2024-09-13 10:15:39,602 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 10:15:39,602 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-09-13 10:15:39,644 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 10:15:39,650 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;@297b35a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 10:15:39,651 INFO L337 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-09-13 10:15:39,658 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 26 states have (on average 1.5) internal successors, (39), 31 states have internal predecessors, (39), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-13 10:15:39,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-13 10:15:39,666 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:15:39,666 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-13 10:15:39,667 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:15:39,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:15:39,675 INFO L85 PathProgramCache]: Analyzing trace with hash 131980187, now seen corresponding path program 1 times [2024-09-13 10:15:39,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:15:39,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148570359] [2024-09-13 10:15:39,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:39,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:15:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:39,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:15:39,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:15:39,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148570359] [2024-09-13 10:15:39,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148570359] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:15:39,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:15:39,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 10:15:39,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807681564] [2024-09-13 10:15:39,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:15:39,801 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-13 10:15:39,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:15:39,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-13 10:15:39,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 10:15:39,830 INFO L87 Difference]: Start difference. First operand has 44 states, 26 states have (on average 1.5) internal successors, (39), 31 states have internal predecessors, (39), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:15:39,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:15:39,865 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2024-09-13 10:15:39,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-13 10:15:39,867 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-09-13 10:15:39,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:15:39,872 INFO L225 Difference]: With dead ends: 44 [2024-09-13 10:15:39,872 INFO L226 Difference]: Without dead ends: 42 [2024-09-13 10:15:39,874 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 10:15:39,878 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:15:39,879 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:15:39,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-09-13 10:15:39,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-09-13 10:15:39,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 25 states have (on average 1.28) internal successors, (32), 30 states have internal predecessors, (32), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-13 10:15:39,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2024-09-13 10:15:39,910 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 5 [2024-09-13 10:15:39,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:15:39,911 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2024-09-13 10:15:39,911 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:15:39,911 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2024-09-13 10:15:39,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-13 10:15:39,913 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:15:39,913 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-13 10:15:39,913 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 10:15:39,913 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:15:39,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:15:39,914 INFO L85 PathProgramCache]: Analyzing trace with hash 131980249, now seen corresponding path program 1 times [2024-09-13 10:15:39,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:15:39,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20148414] [2024-09-13 10:15:39,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:39,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:15:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:40,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:15:40,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:15:40,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20148414] [2024-09-13 10:15:40,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20148414] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:15:40,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:15:40,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 10:15:40,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120641848] [2024-09-13 10:15:40,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:15:40,017 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 10:15:40,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:15:40,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 10:15:40,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-13 10:15:40,022 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:15:40,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:15:40,078 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2024-09-13 10:15:40,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 10:15:40,079 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-09-13 10:15:40,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:15:40,081 INFO L225 Difference]: With dead ends: 41 [2024-09-13 10:15:40,082 INFO L226 Difference]: Without dead ends: 41 [2024-09-13 10:15:40,082 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-13 10:15:40,084 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 1 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:15:40,085 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 121 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:15:40,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-13 10:15:40,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-09-13 10:15:40,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.24) internal successors, (31), 29 states have internal predecessors, (31), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-13 10:15:40,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2024-09-13 10:15:40,097 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 5 [2024-09-13 10:15:40,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:15:40,097 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2024-09-13 10:15:40,098 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:15:40,098 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2024-09-13 10:15:40,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-13 10:15:40,099 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:15:40,099 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:15:40,099 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 10:15:40,100 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:15:40,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:15:40,101 INFO L85 PathProgramCache]: Analyzing trace with hash -905257559, now seen corresponding path program 1 times [2024-09-13 10:15:40,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:15:40,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054520983] [2024-09-13 10:15:40,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:40,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:15:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 10:15:40,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1762078255] [2024-09-13 10:15:40,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:40,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:15:40,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:15:40,153 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:15:40,155 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 10:15:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:40,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-13 10:15:40,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:15:40,324 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-13 10:15:40,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 10:15:40,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:15:40,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054520983] [2024-09-13 10:15:40,327 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 10:15:40,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762078255] [2024-09-13 10:15:40,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762078255] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:15:40,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:15:40,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-13 10:15:40,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682595811] [2024-09-13 10:15:40,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:15:40,330 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 10:15:40,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:15:40,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 10:15:40,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-13 10:15:40,333 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-13 10:15:40,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:15:40,457 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2024-09-13 10:15:40,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 10:15:40,458 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 19 [2024-09-13 10:15:40,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:15:40,460 INFO L225 Difference]: With dead ends: 47 [2024-09-13 10:15:40,460 INFO L226 Difference]: Without dead ends: 47 [2024-09-13 10:15:40,460 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-13 10:15:40,461 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 18 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:15:40,462 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 81 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:15:40,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-13 10:15:40,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-09-13 10:15:40,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 28 states have (on average 1.25) internal successors, (35), 33 states have internal predecessors, (35), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-13 10:15:40,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 59 transitions. [2024-09-13 10:15:40,474 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 59 transitions. Word has length 19 [2024-09-13 10:15:40,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:15:40,476 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 59 transitions. [2024-09-13 10:15:40,476 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-13 10:15:40,476 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 59 transitions. [2024-09-13 10:15:40,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-13 10:15:40,478 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:15:40,478 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:15:40,495 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 10:15:40,679 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:15:40,679 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:15:40,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:15:40,680 INFO L85 PathProgramCache]: Analyzing trace with hash 779692476, now seen corresponding path program 1 times [2024-09-13 10:15:40,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:15:40,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265355716] [2024-09-13 10:15:40,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:40,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:15:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:40,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:15:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:40,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 10:15:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:40,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 10:15:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:40,782 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 10:15:40,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:15:40,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265355716] [2024-09-13 10:15:40,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265355716] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:15:40,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:15:40,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 10:15:40,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746800157] [2024-09-13 10:15:40,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:15:40,784 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 10:15:40,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:15:40,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 10:15:40,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:15:40,785 INFO L87 Difference]: Start difference. First operand 47 states and 59 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-13 10:15:40,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:15:40,825 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2024-09-13 10:15:40,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 10:15:40,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2024-09-13 10:15:40,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:15:40,827 INFO L225 Difference]: With dead ends: 46 [2024-09-13 10:15:40,827 INFO L226 Difference]: Without dead ends: 46 [2024-09-13 10:15:40,827 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:15:40,828 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 3 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:15:40,829 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 70 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:15:40,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-09-13 10:15:40,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-09-13 10:15:40,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 32 states have internal predecessors, (34), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-13 10:15:40,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2024-09-13 10:15:40,834 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 24 [2024-09-13 10:15:40,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:15:40,834 INFO L474 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2024-09-13 10:15:40,834 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-13 10:15:40,835 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2024-09-13 10:15:40,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-13 10:15:40,835 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:15:40,835 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:15:40,835 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-13 10:15:40,836 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:15:40,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:15:40,836 INFO L85 PathProgramCache]: Analyzing trace with hash 779692315, now seen corresponding path program 1 times [2024-09-13 10:15:40,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:15:40,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252081439] [2024-09-13 10:15:40,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:40,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:15:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:40,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:15:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:40,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 10:15:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:40,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 10:15:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:40,901 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 10:15:40,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:15:40,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252081439] [2024-09-13 10:15:40,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252081439] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:15:40,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:15:40,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 10:15:40,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132480245] [2024-09-13 10:15:40,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:15:40,905 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 10:15:40,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:15:40,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 10:15:40,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:15:40,907 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-13 10:15:40,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:15:40,918 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2024-09-13 10:15:40,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 10:15:40,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2024-09-13 10:15:40,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:15:40,920 INFO L225 Difference]: With dead ends: 44 [2024-09-13 10:15:40,920 INFO L226 Difference]: Without dead ends: 43 [2024-09-13 10:15:40,921 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:15:40,923 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 88 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 10:15:40,923 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:15:40,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-13 10:15:40,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-09-13 10:15:40,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 29 states have internal predecessors, (31), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-13 10:15:40,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2024-09-13 10:15:40,930 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 24 [2024-09-13 10:15:40,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:15:40,931 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2024-09-13 10:15:40,931 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-13 10:15:40,931 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2024-09-13 10:15:40,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-13 10:15:40,932 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:15:40,932 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:15:40,932 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-13 10:15:40,934 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:15:40,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:15:40,934 INFO L85 PathProgramCache]: Analyzing trace with hash 240470158, now seen corresponding path program 1 times [2024-09-13 10:15:40,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:15:40,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719554176] [2024-09-13 10:15:40,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:40,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:15:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 10:15:40,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1631848162] [2024-09-13 10:15:40,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:40,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:15:40,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:15:40,969 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:15:40,972 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 10:15:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:41,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-13 10:15:41,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:15:41,145 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-13 10:15:41,145 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 10:15:41,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:15:41,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719554176] [2024-09-13 10:15:41,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 10:15:41,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631848162] [2024-09-13 10:15:41,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631848162] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:15:41,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:15:41,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-13 10:15:41,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566207245] [2024-09-13 10:15:41,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:15:41,147 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 10:15:41,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:15:41,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 10:15:41,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-09-13 10:15:41,148 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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) [2024-09-13 10:15:41,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:15:41,231 INFO L93 Difference]: Finished difference Result 62 states and 86 transitions. [2024-09-13 10:15:41,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 10:15:41,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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 32 [2024-09-13 10:15:41,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:15:41,233 INFO L225 Difference]: With dead ends: 62 [2024-09-13 10:15:41,233 INFO L226 Difference]: Without dead ends: 62 [2024-09-13 10:15:41,233 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-09-13 10:15:41,234 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 21 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:15:41,234 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 64 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:15:41,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-09-13 10:15:41,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2024-09-13 10:15:41,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 states have internal predecessors, (42), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-13 10:15:41,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2024-09-13 10:15:41,243 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 32 [2024-09-13 10:15:41,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:15:41,244 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2024-09-13 10:15:41,244 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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) [2024-09-13 10:15:41,244 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2024-09-13 10:15:41,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-13 10:15:41,245 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:15:41,245 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:15:41,263 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 10:15:41,449 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 [2024-09-13 10:15:41,450 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:15:41,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:15:41,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1606232253, now seen corresponding path program 1 times [2024-09-13 10:15:41,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:15:41,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862643221] [2024-09-13 10:15:41,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:41,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:15:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:41,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:15:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:41,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 10:15:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:41,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 10:15:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:41,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-13 10:15:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:41,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-13 10:15:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:41,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 10:15:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:41,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 10:15:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:41,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-13 10:15:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:41,648 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-09-13 10:15:41,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:15:41,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862643221] [2024-09-13 10:15:41,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862643221] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:15:41,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:15:41,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-13 10:15:41,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356698416] [2024-09-13 10:15:41,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:15:41,651 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 10:15:41,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:15:41,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 10:15:41,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 10:15:41,653 INFO L87 Difference]: Start difference. First operand 56 states and 78 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-13 10:15:41,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:15:41,851 INFO L93 Difference]: Finished difference Result 55 states and 76 transitions. [2024-09-13 10:15:41,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 10:15:41,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 50 [2024-09-13 10:15:41,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:15:41,854 INFO L225 Difference]: With dead ends: 55 [2024-09-13 10:15:41,855 INFO L226 Difference]: Without dead ends: 55 [2024-09-13 10:15:41,855 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-09-13 10:15:41,856 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 14 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 10:15:41,856 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 80 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 10:15:41,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-09-13 10:15:41,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-09-13 10:15:41,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 35 states have internal predecessors, (40), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-13 10:15:41,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 76 transitions. [2024-09-13 10:15:41,876 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 76 transitions. Word has length 50 [2024-09-13 10:15:41,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:15:41,876 INFO L474 AbstractCegarLoop]: Abstraction has 55 states and 76 transitions. [2024-09-13 10:15:41,876 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-13 10:15:41,876 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 76 transitions. [2024-09-13 10:15:41,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-09-13 10:15:41,877 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:15:41,877 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:15:41,877 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-13 10:15:41,878 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:15:41,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:15:41,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1746405951, now seen corresponding path program 1 times [2024-09-13 10:15:41,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:15:41,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946648768] [2024-09-13 10:15:41,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:41,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:15:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 10:15:41,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [405199925] [2024-09-13 10:15:41,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:41,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:15:41,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:15:41,946 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:15:41,974 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 10:15:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:42,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-13 10:15:42,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:15:42,282 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-09-13 10:15:42,283 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:15:42,489 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-09-13 10:15:42,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:15:42,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946648768] [2024-09-13 10:15:42,490 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 10:15:42,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405199925] [2024-09-13 10:15:42,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405199925] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 10:15:42,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 10:15:42,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-09-13 10:15:42,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835689651] [2024-09-13 10:15:42,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:15:42,491 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 10:15:42,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:15:42,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 10:15:42,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-09-13 10:15:42,491 INFO L87 Difference]: Start difference. First operand 55 states and 76 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-13 10:15:42,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:15:42,550 INFO L93 Difference]: Finished difference Result 49 states and 69 transitions. [2024-09-13 10:15:42,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 10:15:42,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 51 [2024-09-13 10:15:42,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:15:42,552 INFO L225 Difference]: With dead ends: 49 [2024-09-13 10:15:42,552 INFO L226 Difference]: Without dead ends: 48 [2024-09-13 10:15:42,552 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 91 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-09-13 10:15:42,553 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 3 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:15:42,553 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 79 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:15:42,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-13 10:15:42,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 40. [2024-09-13 10:15:42,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-13 10:15:42,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2024-09-13 10:15:42,557 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 53 transitions. Word has length 51 [2024-09-13 10:15:42,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:15:42,558 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 53 transitions. [2024-09-13 10:15:42,558 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-13 10:15:42,558 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 53 transitions. [2024-09-13 10:15:42,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-13 10:15:42,559 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:15:42,559 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:15:42,576 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-13 10:15:42,760 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-09-13 10:15:42,760 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:15:42,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:15:42,761 INFO L85 PathProgramCache]: Analyzing trace with hash -794580679, now seen corresponding path program 1 times [2024-09-13 10:15:42,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:15:42,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884754259] [2024-09-13 10:15:42,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:42,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:15:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 10:15:42,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1931745056] [2024-09-13 10:15:42,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:42,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:15:42,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:15:42,796 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:15:42,798 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 10:15:42,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:42,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-13 10:15:42,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:15:43,230 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-09-13 10:15:43,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:15:43,550 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-09-13 10:15:43,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:15:43,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884754259] [2024-09-13 10:15:43,551 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 10:15:43,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931745056] [2024-09-13 10:15:43,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931745056] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 10:15:43,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 10:15:43,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-09-13 10:15:43,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884009048] [2024-09-13 10:15:43,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:15:43,552 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 10:15:43,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:15:43,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 10:15:43,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2024-09-13 10:15:43,553 INFO L87 Difference]: Start difference. First operand 40 states and 53 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-13 10:15:43,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:15:43,701 INFO L93 Difference]: Finished difference Result 40 states and 53 transitions. [2024-09-13 10:15:43,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 10:15:43,702 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 56 [2024-09-13 10:15:43,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:15:43,702 INFO L225 Difference]: With dead ends: 40 [2024-09-13 10:15:43,703 INFO L226 Difference]: Without dead ends: 40 [2024-09-13 10:15:43,703 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2024-09-13 10:15:43,703 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 11 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:15:43,704 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 73 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:15:43,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-13 10:15:43,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2024-09-13 10:15:43,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-13 10:15:43,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2024-09-13 10:15:43,707 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 56 [2024-09-13 10:15:43,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:15:43,707 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2024-09-13 10:15:43,708 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-13 10:15:43,708 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2024-09-13 10:15:43,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-09-13 10:15:43,711 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:15:43,711 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:15:43,731 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-13 10:15:43,911 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:15:43,912 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:15:43,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:15:43,912 INFO L85 PathProgramCache]: Analyzing trace with hash -469516360, now seen corresponding path program 1 times [2024-09-13 10:15:43,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:15:43,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530375965] [2024-09-13 10:15:43,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:43,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:15:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:43,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:15:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:43,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 10:15:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:43,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 10:15:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:43,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-13 10:15:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:44,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-13 10:15:44,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:44,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 10:15:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:44,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 10:15:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:44,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-13 10:15:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:44,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-13 10:15:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:44,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-13 10:15:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:44,026 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-09-13 10:15:44,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:15:44,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530375965] [2024-09-13 10:15:44,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530375965] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:15:44,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:15:44,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 10:15:44,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527137692] [2024-09-13 10:15:44,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:15:44,030 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 10:15:44,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:15:44,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 10:15:44,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 10:15:44,031 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-09-13 10:15:44,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:15:44,169 INFO L93 Difference]: Finished difference Result 49 states and 65 transitions. [2024-09-13 10:15:44,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 10:15:44,170 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 64 [2024-09-13 10:15:44,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:15:44,170 INFO L225 Difference]: With dead ends: 49 [2024-09-13 10:15:44,171 INFO L226 Difference]: Without dead ends: 43 [2024-09-13 10:15:44,171 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-09-13 10:15:44,171 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 5 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:15:44,172 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:15:44,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-13 10:15:44,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2024-09-13 10:15:44,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-13 10:15:44,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 54 transitions. [2024-09-13 10:15:44,178 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 54 transitions. Word has length 64 [2024-09-13 10:15:44,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:15:44,179 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 54 transitions. [2024-09-13 10:15:44,179 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-09-13 10:15:44,179 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 54 transitions. [2024-09-13 10:15:44,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-13 10:15:44,182 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:15:44,182 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:15:44,182 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-09-13 10:15:44,182 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:15:44,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:15:44,183 INFO L85 PathProgramCache]: Analyzing trace with hash -471026589, now seen corresponding path program 1 times [2024-09-13 10:15:44,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:15:44,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750708436] [2024-09-13 10:15:44,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:44,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:15:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:44,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:15:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:44,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 10:15:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:44,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 10:15:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:44,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-13 10:15:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:44,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-13 10:15:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:44,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 10:15:44,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:44,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 10:15:44,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:44,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-13 10:15:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:44,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-13 10:15:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:44,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-13 10:15:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:44,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-13 10:15:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:44,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-13 10:15:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:44,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-13 10:15:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:44,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-13 10:15:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:44,508 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-09-13 10:15:44,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:15:44,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750708436] [2024-09-13 10:15:44,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750708436] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:15:44,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129070956] [2024-09-13 10:15:44,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:15:44,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:15:44,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:15:44,513 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:15:44,516 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 10:15:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:15:44,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-13 10:15:44,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:15:44,795 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2024-09-13 10:15:44,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:15:45,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129070956] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:15:45,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 10:15:45,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 15 [2024-09-13 10:15:45,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071921613] [2024-09-13 10:15:45,017 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 10:15:45,018 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-13 10:15:45,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:15:45,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-13 10:15:45,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-09-13 10:15:45,020 INFO L87 Difference]: Start difference. First operand 41 states and 54 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 9 states have call successors, (27), 1 states have call predecessors, (27), 2 states have return successors, (28), 9 states have call predecessors, (28), 9 states have call successors, (28) [2024-09-13 10:15:45,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:15:45,404 INFO L93 Difference]: Finished difference Result 48 states and 65 transitions. [2024-09-13 10:15:45,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-13 10:15:45,404 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 9 states have call successors, (27), 1 states have call predecessors, (27), 2 states have return successors, (28), 9 states have call predecessors, (28), 9 states have call successors, (28) Word has length 88 [2024-09-13 10:15:45,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:15:45,405 INFO L225 Difference]: With dead ends: 48 [2024-09-13 10:15:45,405 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 10:15:45,405 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2024-09-13 10:15:45,406 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 44 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 10:15:45,406 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 216 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 10:15:45,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 10:15:45,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 10:15:45,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:15:45,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 10:15:45,407 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 88 [2024-09-13 10:15:45,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:15:45,408 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 10:15:45,408 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 9 states have call successors, (27), 1 states have call predecessors, (27), 2 states have return successors, (28), 9 states have call predecessors, (28), 9 states have call successors, (28) [2024-09-13 10:15:45,408 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 10:15:45,408 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 10:15:45,411 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 12 remaining) [2024-09-13 10:15:45,412 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION (10 of 12 remaining) [2024-09-13 10:15:45,412 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (9 of 12 remaining) [2024-09-13 10:15:45,412 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 12 remaining) [2024-09-13 10:15:45,412 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONPRE_CONDITION (7 of 12 remaining) [2024-09-13 10:15:45,412 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONPRE_CONDITION (6 of 12 remaining) [2024-09-13 10:15:45,413 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONPRE_CONDITION (5 of 12 remaining) [2024-09-13 10:15:45,413 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONPRE_CONDITION (4 of 12 remaining) [2024-09-13 10:15:45,413 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONPRE_CONDITION (3 of 12 remaining) [2024-09-13 10:15:45,413 INFO L785 garLoopResultBuilder]: Registering result SAFE for location assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION (2 of 12 remaining) [2024-09-13 10:15:45,413 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 12 remaining) [2024-09-13 10:15:45,413 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION (0 of 12 remaining) [2024-09-13 10:15:45,432 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-13 10:15:45,614 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-13 10:15:45,617 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:15:45,619 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 10:15:45,621 INFO L469 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-09-13 10:15:45,621 INFO L470 ceAbstractionStarter]: WitnessConsidered=2 [2024-09-13 10:15:45,622 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 10:15:45 BoogieIcfgContainer [2024-09-13 10:15:45,622 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 10:15:45,622 INFO L158 Benchmark]: Toolchain (without parser) took 6791.97ms. Allocated memory was 155.2MB in the beginning and 251.7MB in the end (delta: 96.5MB). Free memory was 98.1MB in the beginning and 181.8MB in the end (delta: -83.7MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. [2024-09-13 10:15:45,623 INFO L158 Benchmark]: CDTParser took 0.53ms. Allocated memory is still 155.2MB. Free memory is still 114.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:15:45,623 INFO L158 Benchmark]: Witness Parser took 0.12ms. Allocated memory is still 155.2MB. Free memory is still 100.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:15:45,623 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.64ms. Allocated memory is still 155.2MB. Free memory was 98.1MB in the beginning and 84.2MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 10:15:45,623 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.82ms. Allocated memory is still 155.2MB. Free memory was 84.2MB in the beginning and 82.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 10:15:45,624 INFO L158 Benchmark]: Boogie Preprocessor took 39.40ms. Allocated memory is still 155.2MB. Free memory was 82.6MB in the beginning and 80.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 10:15:45,624 INFO L158 Benchmark]: RCFGBuilder took 384.05ms. Allocated memory is still 155.2MB. Free memory was 80.9MB in the beginning and 124.6MB in the end (delta: -43.7MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. [2024-09-13 10:15:45,624 INFO L158 Benchmark]: TraceAbstraction took 6052.53ms. Allocated memory was 155.2MB in the beginning and 251.7MB in the end (delta: 96.5MB). Free memory was 123.9MB in the beginning and 181.8MB in the end (delta: -57.9MB). Peak memory consumption was 38.1MB. Max. memory is 16.1GB. [2024-09-13 10:15:45,626 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53ms. Allocated memory is still 155.2MB. Free memory is still 114.9MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.12ms. Allocated memory is still 155.2MB. Free memory is still 100.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 279.64ms. Allocated memory is still 155.2MB. Free memory was 98.1MB in the beginning and 84.2MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.82ms. Allocated memory is still 155.2MB. Free memory was 84.2MB in the beginning and 82.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.40ms. Allocated memory is still 155.2MB. Free memory was 82.6MB in the beginning and 80.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 384.05ms. Allocated memory is still 155.2MB. Free memory was 80.9MB in the beginning and 124.6MB in the end (delta: -43.7MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. * TraceAbstraction took 6052.53ms. Allocated memory was 155.2MB in the beginning and 251.7MB in the end (delta: 96.5MB). Free memory was 123.9MB in the beginning and 181.8MB in the end (delta: -57.9MB). Peak memory consumption was 38.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 38]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 47]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 11]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 14]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 44 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 6.0s, OverallIterations: 11, TraceHistogramMax: 11, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 143 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 120 mSDsluCounter, 1030 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 623 mSDsCounter, 104 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 534 IncrementalHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 104 mSolverCounterUnsat, 407 mSDtfsCounter, 534 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 482 GetRequests, 415 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=6, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 21 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 664 NumberOfCodeBlocks, 664 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 599 ConstructedInterpolants, 0 QuantifiedInterpolants, 2403 SizeOfPredicates, 4 NumberOfNonLiveVariables, 648 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 14 InterpolantComputations, 10 PerfectInterpolantSequences, 915/948 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-13 10:15:45,645 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