./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound50.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/hard2_valuebound50.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 04d6fb36 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/hard2_valuebound50.c ../results/automizer-verification-files/SV-COMP24_unreach-call/hard2_valuebound50.yml/witness-2.1.yml -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-04d6fb3-m [2024-09-15 20:18:02,125 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 20:18:02,192 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-15 20:18:02,198 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 20:18:02,198 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 20:18:02,220 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 20:18:02,222 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 20:18:02,222 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 20:18:02,223 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 20:18:02,226 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 20:18:02,226 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 20:18:02,226 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 20:18:02,226 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 20:18:02,227 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 20:18:02,229 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 20:18:02,229 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 20:18:02,229 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 20:18:02,229 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 20:18:02,229 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-15 20:18:02,230 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 20:18:02,230 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 20:18:02,230 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 20:18:02,230 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 20:18:02,230 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 20:18:02,231 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 20:18:02,231 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 20:18:02,231 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 20:18:02,232 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 20:18:02,232 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 20:18:02,232 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 20:18:02,232 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 20:18:02,233 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 20:18:02,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:18:02,233 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 20:18:02,234 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 20:18:02,234 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 20:18:02,234 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-15 20:18:02,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-15 20:18:02,235 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 20:18:02,235 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 20:18:02,235 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 20:18:02,235 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 20:18:02,236 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-15 20:18:02,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 20:18:02,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 20:18:02,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 20:18:02,548 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 20:18:02,549 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 20:18:02,550 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound50.c [2024-09-15 20:18:04,091 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 20:18:04,215 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 20:18:04,216 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound50.c [2024-09-15 20:18:04,223 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/f6b48f356/3b5346c2ae6942bfb8c9120027d5b3ca/FLAG0b638e4e0 [2024-09-15 20:18:04,636 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/f6b48f356/3b5346c2ae6942bfb8c9120027d5b3ca [2024-09-15 20:18:04,640 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-15 20:18:04,640 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-15 20:18:04,641 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/hard2_valuebound50.yml/witness-2.1.yml [2024-09-15 20:18:04,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 20:18:04,712 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-15 20:18:04,713 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 20:18:04,713 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 20:18:04,721 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 20:18:04,724 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:18:04" (1/2) ... [2024-09-15 20:18:04,725 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38e42c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:18:04, skipping insertion in model container [2024-09-15 20:18:04,729 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:18:04" (1/2) ... [2024-09-15 20:18:04,730 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4cae95b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:18:04, skipping insertion in model container [2024-09-15 20:18:04,730 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:18:04" (2/2) ... [2024-09-15 20:18:04,731 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38e42c74 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:18:04, skipping insertion in model container [2024-09-15 20:18:04,731 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:18:04" (2/2) ... [2024-09-15 20:18:04,737 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-15 20:18:04,738 INFO L1541 ArrayList]: Loop invariant at [L44-L56] ((((d == p) && (1 <= p)) && (((long long) A + d) == (((long long) q + p) + r))) && (B == 1)) [2024-09-15 20:18:04,738 INFO L1541 ArrayList]: Loop invariant at [L34-L42] ((((((((A == r) && (p == 2)) && (d == 2)) && (q == 0)) && (B == 1)) || (((((((A == r) && (((long long) A + d) == ((long long) p + r))) && ((d / 2) <= r)) && ((d % 2) == 0)) && (q == 0)) && (B == 1)) && (4 <= (d / 2)))) || ((((((A == r) && (d == 4)) && (2 <= r)) && (q == 0)) && (B == 1)) && (p == 4))) || (((((A == r) && (d == 1)) && (q == 0)) && (B == 1)) && (p == 1))) [2024-09-15 20:18:04,739 INFO L1541 ArrayList]: Function contract at [L14]: requires (\old(cond) != 0), ensures (\old(cond) != 0) [2024-09-15 20:18:04,752 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 20:18:04,890 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound50.c[526,539] [2024-09-15 20:18:04,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:18:04,917 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-09-15 20:18:04,943 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound50.c[526,539] Start Parsing Local Start Parsing Local [2024-09-15 20:18:04,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:18:04,972 INFO L204 MainTranslator]: Completed translation [2024-09-15 20:18:04,973 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:18:04 WrapperNode [2024-09-15 20:18:04,973 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 20:18:04,974 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-15 20:18:04,974 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-15 20:18:04,974 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-15 20:18:04,978 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 15.09 08:18:04" (1/1) ... [2024-09-15 20:18:04,982 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 15.09 08:18:04" (1/1) ... [2024-09-15 20:18:04,998 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2024-09-15 20:18:04,999 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-15 20:18:05,000 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 20:18:05,000 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 20:18:05,000 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 20:18:05,007 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 15.09 08:18:04" (1/1) ... [2024-09-15 20:18:05,008 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 15.09 08:18:04" (1/1) ... [2024-09-15 20:18:05,009 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 15.09 08:18:04" (1/1) ... [2024-09-15 20:18:05,020 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure __VERIFIER_assert is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-15 20:18:05,024 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 15.09 08:18:04" (1/1) ... [2024-09-15 20:18:05,024 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 15.09 08:18:04" (1/1) ... [2024-09-15 20:18:05,027 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 15.09 08:18:04" (1/1) ... [2024-09-15 20:18:05,031 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 15.09 08:18:04" (1/1) ... [2024-09-15 20:18:05,032 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 15.09 08:18:04" (1/1) ... [2024-09-15 20:18:05,035 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 15.09 08:18:04" (1/1) ... [2024-09-15 20:18:05,037 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 20:18:05,037 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 20:18:05,037 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 20:18:05,037 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 20:18:05,038 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 15.09 08:18:04" (1/1) ... [2024-09-15 20:18:05,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:18:05,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:18:05,064 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) [2024-09-15 20:18:05,067 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 [2024-09-15 20:18:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 20:18:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-15 20:18:05,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 20:18:05,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 20:18:05,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-15 20:18:05,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-15 20:18:05,149 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 20:18:05,151 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 20:18:05,272 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-15 20:18:05,293 INFO L? ?]: Removed 43 outVars from TransFormulas that were not future-live. [2024-09-15 20:18:05,294 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 20:18:05,312 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 20:18:05,312 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-15 20:18:05,313 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:18:05 BoogieIcfgContainer [2024-09-15 20:18:05,313 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 20:18:05,314 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-15 20:18:05,314 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-15 20:18:05,317 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-15 20:18:05,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 08:18:04" (1/4) ... [2024-09-15 20:18:05,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e9eeb54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 08:18:05, skipping insertion in model container [2024-09-15 20:18:05,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:18:04" (2/4) ... [2024-09-15 20:18:05,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e9eeb54 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 15.09 08:18:05, skipping insertion in model container [2024-09-15 20:18:05,318 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 15.09 08:18:04" (3/4) ... [2024-09-15 20:18:05,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e9eeb54 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 15.09 08:18:05, skipping insertion in model container [2024-09-15 20:18:05,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:18:05" (4/4) ... [2024-09-15 20:18:05,319 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound50.c [2024-09-15 20:18:05,332 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-15 20:18:05,332 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2024-09-15 20:18:05,380 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-15 20:18:05,388 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@324bf6c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-15 20:18:05,388 INFO L337 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-09-15 20:18:05,392 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 26 states have internal predecessors, (35), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-15 20:18:05,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-09-15 20:18:05,396 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:05,396 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-09-15 20:18:05,397 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-15 20:18:05,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:05,404 INFO L85 PathProgramCache]: Analyzing trace with hash 3877925, now seen corresponding path program 1 times [2024-09-15 20:18:05,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:05,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149280463] [2024-09-15 20:18:05,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:05,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:05,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:18:05,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:05,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149280463] [2024-09-15 20:18:05,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149280463] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:18:05,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:18:05,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 20:18:05,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100548604] [2024-09-15 20:18:05,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:18:05,548 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-15 20:18:05,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:05,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-15 20:18:05,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-15 20:18:05,570 INFO L87 Difference]: Start difference. First operand has 35 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 26 states have internal predecessors, (35), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2024-09-15 20:18:05,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:05,598 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2024-09-15 20:18:05,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-15 20:18:05,600 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-09-15 20:18:05,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:05,605 INFO L225 Difference]: With dead ends: 35 [2024-09-15 20:18:05,605 INFO L226 Difference]: Without dead ends: 33 [2024-09-15 20:18:05,607 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 [2024-09-15 20:18:05,611 INFO L434 NwaCegarLoop]: 40 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, 40 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 [2024-09-15 20:18:05,612 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:18:05,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-15 20:18:05,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-09-15 20:18:05,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 25 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-15 20:18:05,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2024-09-15 20:18:05,661 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 4 [2024-09-15 20:18:05,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:05,661 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2024-09-15 20:18:05,661 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), 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) [2024-09-15 20:18:05,661 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2024-09-15 20:18:05,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-09-15 20:18:05,661 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:05,661 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-09-15 20:18:05,662 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-15 20:18:05,662 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-15 20:18:05,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:05,662 INFO L85 PathProgramCache]: Analyzing trace with hash 3879847, now seen corresponding path program 1 times [2024-09-15 20:18:05,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:05,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831082048] [2024-09-15 20:18:05,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:05,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:05,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:18:05,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:05,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831082048] [2024-09-15 20:18:05,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831082048] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:18:05,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:18:05,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 20:18:05,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230168051] [2024-09-15 20:18:05,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:18:05,849 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:18:05,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:05,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:18:05,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:18:05,854 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-09-15 20:18:05,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:05,921 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2024-09-15 20:18:05,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:18:05,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-09-15 20:18:05,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:05,923 INFO L225 Difference]: With dead ends: 44 [2024-09-15 20:18:05,923 INFO L226 Difference]: Without dead ends: 44 [2024-09-15 20:18:05,923 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:18:05,924 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 5 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:18:05,924 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 55 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:18:05,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-15 20:18:05,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-09-15 20:18:05,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 31 states have internal predecessors, (35), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-15 20:18:05,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2024-09-15 20:18:05,937 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 4 [2024-09-15 20:18:05,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:05,937 INFO L474 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2024-09-15 20:18:05,937 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-09-15 20:18:05,938 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2024-09-15 20:18:05,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-15 20:18:05,939 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:05,939 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:18:05,939 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-15 20:18:05,939 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-15 20:18:05,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:05,940 INFO L85 PathProgramCache]: Analyzing trace with hash 331112384, now seen corresponding path program 1 times [2024-09-15 20:18:05,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:05,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105379252] [2024-09-15 20:18:05,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:05,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:05,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:18:05,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:05,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105379252] [2024-09-15 20:18:05,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105379252] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:18:05,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:18:05,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 20:18:05,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632544321] [2024-09-15 20:18:05,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:18:05,992 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:18:05,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:05,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:18:05,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:18:05,997 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:18:06,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:06,039 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2024-09-15 20:18:06,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:18:06,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-09-15 20:18:06,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:06,041 INFO L225 Difference]: With dead ends: 43 [2024-09-15 20:18:06,041 INFO L226 Difference]: Without dead ends: 43 [2024-09-15 20:18:06,041 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:18:06,043 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 3 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 52 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 [2024-09-15 20:18:06,046 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 52 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:18:06,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-15 20:18:06,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-09-15 20:18:06,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 30 states have internal predecessors, (34), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-15 20:18:06,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2024-09-15 20:18:06,055 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 9 [2024-09-15 20:18:06,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:06,055 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2024-09-15 20:18:06,055 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:18:06,055 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2024-09-15 20:18:06,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-15 20:18:06,056 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:06,056 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:18:06,056 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-15 20:18:06,057 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-15 20:18:06,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:06,058 INFO L85 PathProgramCache]: Analyzing trace with hash 331112223, now seen corresponding path program 1 times [2024-09-15 20:18:06,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:06,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641700481] [2024-09-15 20:18:06,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:06,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:06,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:18:06,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:06,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641700481] [2024-09-15 20:18:06,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641700481] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:18:06,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:18:06,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-15 20:18:06,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785355736] [2024-09-15 20:18:06,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:18:06,115 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:18:06,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:06,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:18:06,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:18:06,116 INFO L87 Difference]: Start difference. First operand 43 states and 57 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:18:06,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:06,125 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2024-09-15 20:18:06,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:18:06,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-09-15 20:18:06,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:06,126 INFO L225 Difference]: With dead ends: 41 [2024-09-15 20:18:06,126 INFO L226 Difference]: Without dead ends: 41 [2024-09-15 20:18:06,126 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:18:06,127 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 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 [2024-09-15 20:18:06,128 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:18:06,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-15 20:18:06,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-09-15 20:18:06,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 28 states have internal predecessors, (32), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-15 20:18:06,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 54 transitions. [2024-09-15 20:18:06,132 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 54 transitions. Word has length 9 [2024-09-15 20:18:06,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:06,132 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 54 transitions. [2024-09-15 20:18:06,132 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:18:06,133 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 54 transitions. [2024-09-15 20:18:06,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-15 20:18:06,133 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:06,133 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:18:06,133 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-15 20:18:06,133 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-15 20:18:06,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:06,134 INFO L85 PathProgramCache]: Analyzing trace with hash 938055942, now seen corresponding path program 1 times [2024-09-15 20:18:06,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:06,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556243739] [2024-09-15 20:18:06,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:06,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:06,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 20:18:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:06,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 20:18:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:06,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-15 20:18:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:06,462 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-15 20:18:06,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:06,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556243739] [2024-09-15 20:18:06,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556243739] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:18:06,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075629415] [2024-09-15 20:18:06,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:06,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:18:06,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:18:06,465 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) [2024-09-15 20:18:06,466 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-15 20:18:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:06,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-15 20:18:06,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:18:06,594 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-15 20:18:06,594 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:18:06,686 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-15 20:18:06,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075629415] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:18:06,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:18:06,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-09-15 20:18:06,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520435034] [2024-09-15 20:18:06,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:18:06,688 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-15 20:18:06,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:06,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-15 20:18:06,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:18:06,689 INFO L87 Difference]: Start difference. First operand 41 states and 54 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-15 20:18:06,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:06,768 INFO L93 Difference]: Finished difference Result 58 states and 80 transitions. [2024-09-15 20:18:06,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-15 20:18:06,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2024-09-15 20:18:06,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:06,771 INFO L225 Difference]: With dead ends: 58 [2024-09-15 20:18:06,771 INFO L226 Difference]: Without dead ends: 58 [2024-09-15 20:18:06,771 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:18:06,771 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 9 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:18:06,772 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 73 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:18:06,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-09-15 20:18:06,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2024-09-15 20:18:06,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 35 states have internal predecessors, (41), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-15 20:18:06,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 73 transitions. [2024-09-15 20:18:06,793 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 73 transitions. Word has length 22 [2024-09-15 20:18:06,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:06,794 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 73 transitions. [2024-09-15 20:18:06,794 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-15 20:18:06,794 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 73 transitions. [2024-09-15 20:18:06,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-15 20:18:06,800 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:06,800 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:18:06,813 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-15 20:18:07,000 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:18:07,002 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-15 20:18:07,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:07,002 INFO L85 PathProgramCache]: Analyzing trace with hash -987888612, now seen corresponding path program 1 times [2024-09-15 20:18:07,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:07,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108222456] [2024-09-15 20:18:07,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:07,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 20:18:07,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2071177687] [2024-09-15 20:18:07,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:07,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:18:07,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:18:07,048 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) [2024-09-15 20:18:07,055 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-15 20:18:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:07,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-15 20:18:07,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:18:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-15 20:18:07,177 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-15 20:18:07,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:07,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108222456] [2024-09-15 20:18:07,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 20:18:07,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071177687] [2024-09-15 20:18:07,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071177687] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:18:07,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:18:07,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 20:18:07,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720427110] [2024-09-15 20:18:07,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:18:07,179 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:18:07,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:07,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:18:07,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:18:07,180 INFO L87 Difference]: Start difference. First operand 53 states and 73 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-15 20:18:07,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:07,201 INFO L93 Difference]: Finished difference Result 61 states and 86 transitions. [2024-09-15 20:18:07,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:18:07,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 35 [2024-09-15 20:18:07,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:07,203 INFO L225 Difference]: With dead ends: 61 [2024-09-15 20:18:07,203 INFO L226 Difference]: Without dead ends: 61 [2024-09-15 20:18:07,203 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:18:07,203 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:18:07,204 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 44 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:18:07,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-09-15 20:18:07,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2024-09-15 20:18:07,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-15 20:18:07,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 85 transitions. [2024-09-15 20:18:07,208 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 85 transitions. Word has length 35 [2024-09-15 20:18:07,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:07,208 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 85 transitions. [2024-09-15 20:18:07,209 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-15 20:18:07,209 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 85 transitions. [2024-09-15 20:18:07,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-15 20:18:07,209 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:07,210 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:18:07,222 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-15 20:18:07,413 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 [2024-09-15 20:18:07,414 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-15 20:18:07,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:07,414 INFO L85 PathProgramCache]: Analyzing trace with hash -105745616, now seen corresponding path program 1 times [2024-09-15 20:18:07,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:07,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323523921] [2024-09-15 20:18:07,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:07,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:07,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 20:18:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:07,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 20:18:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:07,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-15 20:18:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:07,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 20:18:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:07,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-15 20:18:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:07,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-15 20:18:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:07,475 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-15 20:18:07,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:07,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323523921] [2024-09-15 20:18:07,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323523921] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:18:07,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:18:07,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 20:18:07,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903988509] [2024-09-15 20:18:07,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:18:07,476 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:18:07,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:07,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:18:07,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:18:07,477 INFO L87 Difference]: Start difference. First operand 58 states and 85 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-09-15 20:18:07,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:07,505 INFO L93 Difference]: Finished difference Result 65 states and 94 transitions. [2024-09-15 20:18:07,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:18:07,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 40 [2024-09-15 20:18:07,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:07,507 INFO L225 Difference]: With dead ends: 65 [2024-09-15 20:18:07,507 INFO L226 Difference]: Without dead ends: 58 [2024-09-15 20:18:07,507 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:18:07,508 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:18:07,508 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:18:07,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-09-15 20:18:07,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-09-15 20:18:07,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 38 states have internal predecessors, (46), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-15 20:18:07,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 84 transitions. [2024-09-15 20:18:07,512 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 84 transitions. Word has length 40 [2024-09-15 20:18:07,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:07,512 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 84 transitions. [2024-09-15 20:18:07,512 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-09-15 20:18:07,512 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 84 transitions. [2024-09-15 20:18:07,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-15 20:18:07,513 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:07,513 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-09-15 20:18:07,513 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-15 20:18:07,513 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-15 20:18:07,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:07,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1427962715, now seen corresponding path program 2 times [2024-09-15 20:18:07,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:07,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068670414] [2024-09-15 20:18:07,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:07,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:07,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 20:18:07,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:07,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 20:18:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:07,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-15 20:18:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:07,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 20:18:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:07,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-15 20:18:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:07,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-15 20:18:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:07,706 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-15 20:18:07,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:07,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068670414] [2024-09-15 20:18:07,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068670414] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:18:07,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419991181] [2024-09-15 20:18:07,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 20:18:07,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:18:07,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:18:07,708 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) [2024-09-15 20:18:07,710 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-15 20:18:07,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 20:18:07,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:18:07,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-15 20:18:07,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:18:07,880 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-15 20:18:07,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:18:08,098 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-15 20:18:08,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419991181] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:18:08,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:18:08,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-09-15 20:18:08,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432358415] [2024-09-15 20:18:08,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:18:08,099 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-15 20:18:08,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:08,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-15 20:18:08,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-15 20:18:08,100 INFO L87 Difference]: Start difference. First operand 58 states and 84 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-15 20:18:08,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:08,326 INFO L93 Difference]: Finished difference Result 96 states and 151 transitions. [2024-09-15 20:18:08,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-15 20:18:08,326 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 40 [2024-09-15 20:18:08,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:08,327 INFO L225 Difference]: With dead ends: 96 [2024-09-15 20:18:08,327 INFO L226 Difference]: Without dead ends: 96 [2024-09-15 20:18:08,328 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-09-15 20:18:08,328 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 28 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 20:18:08,328 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 156 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 20:18:08,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-09-15 20:18:08,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 70. [2024-09-15 20:18:08,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 43 states have (on average 1.2790697674418605) internal successors, (55), 45 states have internal predecessors, (55), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-15 20:18:08,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 103 transitions. [2024-09-15 20:18:08,334 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 103 transitions. Word has length 40 [2024-09-15 20:18:08,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:08,334 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 103 transitions. [2024-09-15 20:18:08,334 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-15 20:18:08,334 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 103 transitions. [2024-09-15 20:18:08,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-15 20:18:08,335 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:08,335 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:18:08,347 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-15 20:18:08,539 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 [2024-09-15 20:18:08,540 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-15 20:18:08,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:08,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1366577296, now seen corresponding path program 1 times [2024-09-15 20:18:08,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:08,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627244709] [2024-09-15 20:18:08,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:08,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:09,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 20:18:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:09,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 20:18:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:09,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-15 20:18:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:09,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 20:18:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:09,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-15 20:18:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:09,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-15 20:18:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:09,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 20:18:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:09,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-15 20:18:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:09,090 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-15 20:18:09,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:09,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627244709] [2024-09-15 20:18:09,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627244709] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:18:09,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865749998] [2024-09-15 20:18:09,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:09,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:18:09,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:18:09,092 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) [2024-09-15 20:18:09,100 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-15 20:18:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:09,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-15 20:18:09,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:18:09,476 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-15 20:18:09,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:18:09,909 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-15 20:18:09,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865749998] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:18:09,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:18:09,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 5] total 12 [2024-09-15 20:18:09,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7125910] [2024-09-15 20:18:09,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:18:09,910 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-15 20:18:09,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:09,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-15 20:18:09,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-09-15 20:18:09,911 INFO L87 Difference]: Start difference. First operand 70 states and 103 transitions. Second operand has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 8 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2024-09-15 20:18:10,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:10,159 INFO L93 Difference]: Finished difference Result 89 states and 129 transitions. [2024-09-15 20:18:10,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-15 20:18:10,163 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 8 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) Word has length 54 [2024-09-15 20:18:10,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:10,164 INFO L225 Difference]: With dead ends: 89 [2024-09-15 20:18:10,164 INFO L226 Difference]: Without dead ends: 82 [2024-09-15 20:18:10,164 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 115 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-09-15 20:18:10,165 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 24 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 20:18:10,165 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 223 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 20:18:10,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-09-15 20:18:10,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-09-15 20:18:10,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 51 states have internal predecessors, (59), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-15 20:18:10,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 119 transitions. [2024-09-15 20:18:10,177 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 119 transitions. Word has length 54 [2024-09-15 20:18:10,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:10,178 INFO L474 AbstractCegarLoop]: Abstraction has 82 states and 119 transitions. [2024-09-15 20:18:10,178 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 8 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2024-09-15 20:18:10,178 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 119 transitions. [2024-09-15 20:18:10,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-09-15 20:18:10,185 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:10,185 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2024-09-15 20:18:10,197 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-15 20:18:10,385 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 [2024-09-15 20:18:10,386 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-15 20:18:10,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:10,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1521850748, now seen corresponding path program 3 times [2024-09-15 20:18:10,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:10,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432941125] [2024-09-15 20:18:10,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:10,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:10,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 20:18:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:10,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 20:18:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:10,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-15 20:18:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:10,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 20:18:10,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:10,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-15 20:18:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:10,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-15 20:18:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:10,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 20:18:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:10,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-15 20:18:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:10,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-15 20:18:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:10,730 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-15 20:18:10,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:10,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432941125] [2024-09-15 20:18:10,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432941125] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:18:10,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51756777] [2024-09-15 20:18:10,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 20:18:10,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:18:10,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:18:10,732 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) [2024-09-15 20:18:10,734 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-15 20:18:10,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-15 20:18:10,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:18:10,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-15 20:18:10,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:18:11,170 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-09-15 20:18:11,171 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-15 20:18:11,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51756777] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:18:11,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-15 20:18:11,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2024-09-15 20:18:11,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466222381] [2024-09-15 20:18:11,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:18:11,172 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-15 20:18:11,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:11,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-15 20:18:11,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-09-15 20:18:11,172 INFO L87 Difference]: Start difference. First operand 82 states and 119 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-15 20:18:11,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:11,317 INFO L93 Difference]: Finished difference Result 89 states and 130 transitions. [2024-09-15 20:18:11,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-15 20:18:11,318 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 58 [2024-09-15 20:18:11,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:11,318 INFO L225 Difference]: With dead ends: 89 [2024-09-15 20:18:11,318 INFO L226 Difference]: Without dead ends: 89 [2024-09-15 20:18:11,319 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-09-15 20:18:11,319 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 19 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:18:11,319 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 66 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:18:11,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-09-15 20:18:11,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 81. [2024-09-15 20:18:11,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 49 states have (on average 1.183673469387755) internal successors, (58), 50 states have internal predecessors, (58), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-15 20:18:11,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 118 transitions. [2024-09-15 20:18:11,324 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 118 transitions. Word has length 58 [2024-09-15 20:18:11,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:11,325 INFO L474 AbstractCegarLoop]: Abstraction has 81 states and 118 transitions. [2024-09-15 20:18:11,325 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-15 20:18:11,325 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 118 transitions. [2024-09-15 20:18:11,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-09-15 20:18:11,326 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:11,326 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:18:11,338 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-15 20:18:11,526 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-15 20:18:11,527 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-15 20:18:11,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:11,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1043261556, now seen corresponding path program 1 times [2024-09-15 20:18:11,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:11,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245330327] [2024-09-15 20:18:11,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:11,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 20:18:11,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [675567584] [2024-09-15 20:18:11,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:11,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:18:11,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:18:11,546 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:18:11,547 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-15 20:18:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:11,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-15 20:18:11,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:18:11,694 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-09-15 20:18:11,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:18:12,011 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-09-15 20:18:12,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:12,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245330327] [2024-09-15 20:18:12,012 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 20:18:12,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675567584] [2024-09-15 20:18:12,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675567584] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:18:12,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-15 20:18:12,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2024-09-15 20:18:12,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500989379] [2024-09-15 20:18:12,012 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-15 20:18:12,013 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-15 20:18:12,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:12,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-15 20:18:12,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-09-15 20:18:12,014 INFO L87 Difference]: Start difference. First operand 81 states and 118 transitions. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-09-15 20:18:12,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:12,296 INFO L93 Difference]: Finished difference Result 93 states and 133 transitions. [2024-09-15 20:18:12,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-15 20:18:12,296 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 67 [2024-09-15 20:18:12,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:12,297 INFO L225 Difference]: With dead ends: 93 [2024-09-15 20:18:12,297 INFO L226 Difference]: Without dead ends: 93 [2024-09-15 20:18:12,297 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2024-09-15 20:18:12,298 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 10 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:18:12,298 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 85 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:18:12,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-09-15 20:18:12,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 68. [2024-09-15 20:18:12,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 41 states have (on average 1.170731707317073) internal successors, (48), 41 states have internal predecessors, (48), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-15 20:18:12,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 98 transitions. [2024-09-15 20:18:12,302 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 98 transitions. Word has length 67 [2024-09-15 20:18:12,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:12,303 INFO L474 AbstractCegarLoop]: Abstraction has 68 states and 98 transitions. [2024-09-15 20:18:12,303 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-09-15 20:18:12,303 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 98 transitions. [2024-09-15 20:18:12,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-15 20:18:12,304 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:12,304 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 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] [2024-09-15 20:18:12,316 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-15 20:18:12,504 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-15 20:18:12,505 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-15 20:18:12,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:12,506 INFO L85 PathProgramCache]: Analyzing trace with hash 538052032, now seen corresponding path program 1 times [2024-09-15 20:18:12,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:12,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331199788] [2024-09-15 20:18:12,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:12,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:12,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 20:18:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:12,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 20:18:12,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:12,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-15 20:18:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:12,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 20:18:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:12,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-15 20:18:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:12,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-15 20:18:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:12,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 20:18:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:12,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-15 20:18:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:12,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-15 20:18:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:12,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-15 20:18:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:12,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-15 20:18:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:12,847 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-15 20:18:12,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:12,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331199788] [2024-09-15 20:18:12,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331199788] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:18:12,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132149434] [2024-09-15 20:18:12,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:12,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:18:12,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:18:12,849 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:18:12,855 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-15 20:18:12,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:12,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-15 20:18:12,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:18:13,065 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-09-15 20:18:13,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:18:13,212 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-09-15 20:18:13,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132149434] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:18:13,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:18:13,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-09-15 20:18:13,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928216772] [2024-09-15 20:18:13,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:18:13,213 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-15 20:18:13,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:13,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-15 20:18:13,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-09-15 20:18:13,214 INFO L87 Difference]: Start difference. First operand 68 states and 98 transitions. Second operand has 13 states, 12 states have (on average 3.75) internal successors, (45), 13 states have internal predecessors, (45), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2024-09-15 20:18:13,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:13,503 INFO L93 Difference]: Finished difference Result 90 states and 132 transitions. [2024-09-15 20:18:13,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-15 20:18:13,503 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 13 states have internal predecessors, (45), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) Word has length 72 [2024-09-15 20:18:13,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:13,504 INFO L225 Difference]: With dead ends: 90 [2024-09-15 20:18:13,504 INFO L226 Difference]: Without dead ends: 0 [2024-09-15 20:18:13,506 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2024-09-15 20:18:13,506 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 51 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:18:13,506 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 153 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:18:13,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-15 20:18:13,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-15 20:18:13,507 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) [2024-09-15 20:18:13,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-15 20:18:13,507 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 72 [2024-09-15 20:18:13,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:13,507 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-15 20:18:13,507 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 13 states have internal predecessors, (45), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2024-09-15 20:18:13,507 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-15 20:18:13,507 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-15 20:18:13,514 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 11 remaining) [2024-09-15 20:18:13,515 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION (9 of 11 remaining) [2024-09-15 20:18:13,515 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (8 of 11 remaining) [2024-09-15 20:18:13,515 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONPRE_CONDITION (7 of 11 remaining) [2024-09-15 20:18:13,515 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 11 remaining) [2024-09-15 20:18:13,516 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONPRE_CONDITION (5 of 11 remaining) [2024-09-15 20:18:13,516 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONPRE_CONDITION (4 of 11 remaining) [2024-09-15 20:18:13,516 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONPRE_CONDITION (3 of 11 remaining) [2024-09-15 20:18:13,516 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONPRE_CONDITION (2 of 11 remaining) [2024-09-15 20:18:13,516 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 11 remaining) [2024-09-15 20:18:13,520 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION (0 of 11 remaining) [2024-09-15 20:18:13,553 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-15 20:18:13,720 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:18:13,723 INFO L408 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:18:13,729 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-15 20:18:13,730 INFO L469 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-09-15 20:18:13,730 INFO L470 ceAbstractionStarter]: WitnessConsidered=2 [2024-09-15 20:18:13,731 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 08:18:13 BoogieIcfgContainer [2024-09-15 20:18:13,731 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-15 20:18:13,731 INFO L158 Benchmark]: Toolchain (without parser) took 9019.15ms. Allocated memory was 75.5MB in the beginning and 195.0MB in the end (delta: 119.5MB). Free memory was 37.1MB in the beginning and 161.7MB in the end (delta: -124.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:18:13,731 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 75.5MB. Free memory is still 55.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:18:13,731 INFO L158 Benchmark]: Witness Parser took 0.09ms. Allocated memory is still 75.5MB. Free memory is still 39.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:18:13,731 INFO L158 Benchmark]: CACSL2BoogieTranslator took 260.48ms. Allocated memory is still 75.5MB. Free memory was 36.9MB in the beginning and 51.1MB in the end (delta: -14.2MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2024-09-15 20:18:13,732 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.77ms. Allocated memory is still 75.5MB. Free memory was 50.8MB in the beginning and 49.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 20:18:13,732 INFO L158 Benchmark]: Boogie Preprocessor took 36.76ms. Allocated memory is still 75.5MB. Free memory was 49.3MB in the beginning and 47.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:18:13,732 INFO L158 Benchmark]: RCFGBuilder took 275.90ms. Allocated memory is still 75.5MB. Free memory was 47.2MB in the beginning and 32.2MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-15 20:18:13,732 INFO L158 Benchmark]: TraceAbstraction took 8416.24ms. Allocated memory was 75.5MB in the beginning and 195.0MB in the end (delta: 119.5MB). Free memory was 31.3MB in the beginning and 161.7MB in the end (delta: -130.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:18:13,733 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 75.5MB. Free memory is still 55.8MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.09ms. Allocated memory is still 75.5MB. Free memory is still 39.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 260.48ms. Allocated memory is still 75.5MB. Free memory was 36.9MB in the beginning and 51.1MB in the end (delta: -14.2MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.77ms. Allocated memory is still 75.5MB. Free memory was 50.8MB in the beginning and 49.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.76ms. Allocated memory is still 75.5MB. Free memory was 49.3MB in the beginning and 47.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 275.90ms. Allocated memory is still 75.5MB. Free memory was 47.2MB in the beginning and 32.2MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8416.24ms. Allocated memory was 75.5MB in the beginning and 195.0MB in the end (delta: 119.5MB). Free memory was 31.3MB in the beginning and 161.7MB in the end (delta: -130.4MB). There was no memory consumed. 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: 34]: 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: 44]: 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: 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 2 procedures, 35 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 8.4s, OverallIterations: 12, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 193 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 155 mSDsluCounter, 1064 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 661 mSDsCounter, 172 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 933 IncrementalHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 172 mSolverCounterUnsat, 403 mSDtfsCounter, 933 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 734 GetRequests, 659 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=9, InterpolantAutomatonStates: 70, 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, 12 MinimizatonAttempts, 67 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 762 NumberOfCodeBlocks, 729 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 893 ConstructedInterpolants, 0 QuantifiedInterpolants, 6008 SizeOfPredicates, 7 NumberOfNonLiveVariables, 995 ConjunctsInSsa, 112 ConjunctsInUnsatCore, 22 InterpolantComputations, 7 PerfectInterpolantSequences, 2005/2105 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 11 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-15 20:18:13,763 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE