./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/id_i10_o10-2.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/id_i10_o10-2.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1d5fa637 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReachWitnessValidation.xml -i ../sv-benchmarks/c/recursive-simple/id_i10_o10-2.c ../results/automizer-verification-files/SV-COMP24_unreach-call/id_i10_o10-2.yml/witness-2.1.yml -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --- Real Ultimate output --- This is Ultimate 0.2.4-dev-1d5fa63-m [2024-09-13 10:28:02,068 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 10:28:02,148 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 10:28:02,153 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 10:28:02,155 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 10:28:02,188 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 10:28:02,189 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 10:28:02,189 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 10:28:02,190 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 10:28:02,191 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 10:28:02,191 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 10:28:02,191 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 10:28:02,192 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 10:28:02,194 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 10:28:02,194 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 10:28:02,195 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 10:28:02,195 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 10:28:02,195 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 10:28:02,196 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 10:28:02,196 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 10:28:02,196 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 10:28:02,200 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 10:28:02,200 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 10:28:02,201 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 10:28:02,201 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 10:28:02,201 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 10:28:02,201 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 10:28:02,202 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 10:28:02,202 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 10:28:02,202 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 10:28:02,202 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 10:28:02,202 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 10:28:02,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 10:28:02,203 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 10:28:02,203 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 10:28:02,203 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 10:28:02,204 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 10:28:02,204 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 10:28:02,204 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 10:28:02,204 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 10:28:02,204 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 10:28:02,205 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 10:28:02,206 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 10:28:02,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 10:28:02,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 10:28:02,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 10:28:02,518 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 10:28:02,518 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 10:28:02,520 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/id_i10_o10-2.c [2024-09-13 10:28:04,041 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 10:28:04,217 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 10:28:04,218 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/id_i10_o10-2.c [2024-09-13 10:28:04,224 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/c7134bf7d/27b1330482314ba59d9572faee2f1327/FLAG66922eee7 [2024-09-13 10:28:04,236 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/c7134bf7d/27b1330482314ba59d9572faee2f1327 [2024-09-13 10:28:04,239 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 10:28:04,241 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 10:28:04,242 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/id_i10_o10-2.yml/witness-2.1.yml [2024-09-13 10:28:04,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 10:28:04,292 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 10:28:04,294 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 10:28:04,294 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 10:28:04,300 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 10:28:04,300 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:28:04" (1/2) ... [2024-09-13 10:28:04,301 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72355312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:28:04, skipping insertion in model container [2024-09-13 10:28:04,301 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:28:04" (1/2) ... [2024-09-13 10:28:04,303 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4f0c88da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:28:04, skipping insertion in model container [2024-09-13 10:28:04,303 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:28:04" (2/2) ... [2024-09-13 10:28:04,305 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72355312 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:04, skipping insertion in model container [2024-09-13 10:28:04,306 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:28:04" (2/2) ... [2024-09-13 10:28:04,312 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 10:28:04,316 INFO L1541 ArrayList]: Function contract at [L6]: requires null, ensures (((((((((((((3 == \result) && (\old(x) == 3)) || ((\old(x) == 6) && (6 == \result))) || ((9 == \result) && (\old(x) == 9))) || ((2 == \result) && (\old(x) == 2))) || ((10 == \result) && (\old(x) == 10))) || ((5 == \result) && (5 == \old(x)))) || ((8 == \result) && (\old(x) == 8))) || ((7 == \result) && (7 == \old(x)))) || (10 < \old(x))) || ((\result == 1) && (\old(x) == 1))) || ((\old(x) == 4) && (4 == \result))) || ((\result == 0) && (\old(x) == 0))) [2024-09-13 10:28:04,332 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 10:28:04,493 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/id_i10_o10-2.c[454,467] [2024-09-13 10:28:04,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 10:28:04,508 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global [2024-09-13 10:28:04,558 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/id_i10_o10-2.c[454,467] [2024-09-13 10:28:04,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 10:28:04,577 INFO L204 MainTranslator]: Completed translation [2024-09-13 10:28:04,578 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:04 WrapperNode [2024-09-13 10:28:04,578 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 10:28:04,580 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 10:28:04,580 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 10:28:04,580 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 10:28:04,588 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:04" (1/1) ... [2024-09-13 10:28:04,595 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:04" (1/1) ... [2024-09-13 10:28:04,610 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2024-09-13 10:28:04,610 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 10:28:04,611 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 10:28:04,611 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 10:28:04,611 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 10:28:04,621 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:04" (1/1) ... [2024-09-13 10:28:04,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:04" (1/1) ... [2024-09-13 10:28:04,628 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:04" (1/1) ... [2024-09-13 10:28:04,639 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure id is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-13 10:28:04,639 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:04" (1/1) ... [2024-09-13 10:28:04,640 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:04" (1/1) ... [2024-09-13 10:28:04,644 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:04" (1/1) ... [2024-09-13 10:28:04,647 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:04" (1/1) ... [2024-09-13 10:28:04,649 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:04" (1/1) ... [2024-09-13 10:28:04,649 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:04" (1/1) ... [2024-09-13 10:28:04,654 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 10:28:04,655 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 10:28:04,655 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 10:28:04,655 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 10:28:04,656 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:04" (1/1) ... [2024-09-13 10:28:04,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 10:28:04,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:28:04,688 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-13 10:28:04,691 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-13 10:28:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 10:28:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 10:28:04,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 10:28:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-13 10:28:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure id [2024-09-13 10:28:04,739 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2024-09-13 10:28:04,801 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 10:28:04,803 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 10:28:04,956 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-09-13 10:28:04,956 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 10:28:04,984 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 10:28:04,984 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-13 10:28:04,985 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:28:04 BoogieIcfgContainer [2024-09-13 10:28:04,985 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 10:28:04,995 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 10:28:04,995 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 10:28:05,001 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 10:28:05,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 10:28:04" (1/4) ... [2024-09-13 10:28:05,003 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f3fb63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 10:28:05, skipping insertion in model container [2024-09-13 10:28:05,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:28:04" (2/4) ... [2024-09-13 10:28:05,004 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f3fb63 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 10:28:05, skipping insertion in model container [2024-09-13 10:28:05,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:04" (3/4) ... [2024-09-13 10:28:05,004 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f3fb63 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 10:28:05, skipping insertion in model container [2024-09-13 10:28:05,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:28:04" (4/4) ... [2024-09-13 10:28:05,007 INFO L112 eAbstractionObserver]: Analyzing ICFG id_i10_o10-2.c [2024-09-13 10:28:05,026 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 10:28:05,026 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-09-13 10:28:05,082 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 10:28:05,088 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;@4c3098ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 10:28:05,088 INFO L337 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-09-13 10:28:05,091 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 10:28:05,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-13 10:28:05,098 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:05,099 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-13 10:28:05,099 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting idErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:28:05,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:05,105 INFO L85 PathProgramCache]: Analyzing trace with hash 56172024, now seen corresponding path program 1 times [2024-09-13 10:28:05,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:05,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723127976] [2024-09-13 10:28:05,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:05,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:05,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:05,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:05,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723127976] [2024-09-13 10:28:05,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723127976] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:28:05,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:28:05,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-13 10:28:05,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344594223] [2024-09-13 10:28:05,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:28:05,397 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 10:28:05,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:05,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 10:28:05,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 10:28:05,425 INFO L87 Difference]: Start difference. First operand has 15 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:28:05,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:05,531 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2024-09-13 10:28:05,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 10:28:05,534 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-09-13 10:28:05,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:05,539 INFO L225 Difference]: With dead ends: 22 [2024-09-13 10:28:05,539 INFO L226 Difference]: Without dead ends: 20 [2024-09-13 10:28:05,541 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 10:28:05,544 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:05,545 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 34 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:28:05,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-09-13 10:28:05,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2024-09-13 10:28:05,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-13 10:28:05,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2024-09-13 10:28:05,576 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 5 [2024-09-13 10:28:05,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:05,577 INFO L474 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2024-09-13 10:28:05,577 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:28:05,577 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2024-09-13 10:28:05,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-13 10:28:05,579 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:05,579 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-09-13 10:28:05,579 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 10:28:05,580 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting idErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:28:05,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:05,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1615449573, now seen corresponding path program 1 times [2024-09-13 10:28:05,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:05,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961212729] [2024-09-13 10:28:05,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:05,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:05,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:05,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:05,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961212729] [2024-09-13 10:28:05,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961212729] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:28:05,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486915285] [2024-09-13 10:28:05,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:05,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:05,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:28:05,698 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:28:05,703 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 10:28:05,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:05,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-13 10:28:05,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:28:05,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:05,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:28:05,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:05,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486915285] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:28:05,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:28:05,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-09-13 10:28:05,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914827523] [2024-09-13 10:28:05,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:28:05,911 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-13 10:28:05,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:05,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-13 10:28:05,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-09-13 10:28:05,914 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 12 states, 10 states have (on average 1.1) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:28:06,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:06,092 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2024-09-13 10:28:06,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-13 10:28:06,093 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.1) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-09-13 10:28:06,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:06,094 INFO L225 Difference]: With dead ends: 41 [2024-09-13 10:28:06,094 INFO L226 Difference]: Without dead ends: 41 [2024-09-13 10:28:06,094 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-09-13 10:28:06,095 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 39 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:06,096 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 69 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:28:06,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-13 10:28:06,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2024-09-13 10:28:06,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 10:28:06,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2024-09-13 10:28:06,102 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 8 [2024-09-13 10:28:06,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:06,103 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2024-09-13 10:28:06,103 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.1) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:28:06,103 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2024-09-13 10:28:06,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-13 10:28:06,104 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:06,104 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2024-09-13 10:28:06,123 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 10:28:06,308 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:06,309 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting idErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:28:06,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:06,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1295816760, now seen corresponding path program 2 times [2024-09-13 10:28:06,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:06,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091132236] [2024-09-13 10:28:06,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:06,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:06,527 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:06,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:06,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091132236] [2024-09-13 10:28:06,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091132236] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:28:06,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306383061] [2024-09-13 10:28:06,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 10:28:06,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:06,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:28:06,532 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:28:06,534 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 10:28:06,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-09-13 10:28:06,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 10:28:06,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-13 10:28:06,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:28:06,605 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-13 10:28:06,605 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 10:28:06,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306383061] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:28:06,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 10:28:06,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 15 [2024-09-13 10:28:06,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209025220] [2024-09-13 10:28:06,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:28:06,607 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 10:28:06,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:06,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 10:28:06,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-09-13 10:28:06,609 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:28:06,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:06,637 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2024-09-13 10:28:06,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 10:28:06,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-09-13 10:28:06,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:06,641 INFO L225 Difference]: With dead ends: 39 [2024-09-13 10:28:06,641 INFO L226 Difference]: Without dead ends: 39 [2024-09-13 10:28:06,641 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-09-13 10:28:06,644 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:06,644 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 13 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:28:06,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-13 10:28:06,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2024-09-13 10:28:06,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.24) internal successors, (31), 26 states have internal predecessors, (31), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 10:28:06,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2024-09-13 10:28:06,659 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 17 [2024-09-13 10:28:06,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:06,659 INFO L474 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2024-09-13 10:28:06,660 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:28:06,660 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2024-09-13 10:28:06,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-13 10:28:06,661 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:06,661 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:28:06,678 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 10:28:06,864 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:06,865 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting idErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:28:06,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:06,868 INFO L85 PathProgramCache]: Analyzing trace with hash 511038535, now seen corresponding path program 1 times [2024-09-13 10:28:06,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:06,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349921396] [2024-09-13 10:28:06,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:06,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:07,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-13 10:28:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:07,118 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:07,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:07,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349921396] [2024-09-13 10:28:07,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349921396] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:28:07,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410317102] [2024-09-13 10:28:07,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:07,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:07,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:28:07,121 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:28:07,123 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 10:28:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:07,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-13 10:28:07,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:28:07,301 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:07,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:28:07,548 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:07,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410317102] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:28:07,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:28:07,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-09-13 10:28:07,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551364682] [2024-09-13 10:28:07,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:28:07,549 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-13 10:28:07,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:07,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-13 10:28:07,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2024-09-13 10:28:07,552 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 25 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 16 states have internal predecessors, (28), 10 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 10:28:07,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:07,956 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2024-09-13 10:28:07,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-13 10:28:07,956 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 16 states have internal predecessors, (28), 10 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2024-09-13 10:28:07,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:07,958 INFO L225 Difference]: With dead ends: 71 [2024-09-13 10:28:07,958 INFO L226 Difference]: Without dead ends: 71 [2024-09-13 10:28:07,958 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=271, Invalid=851, Unknown=0, NotChecked=0, Total=1122 [2024-09-13 10:28:07,959 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 125 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:07,960 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 120 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 10:28:07,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-09-13 10:28:07,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2024-09-13 10:28:07,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 43 states have internal predecessors, (51), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-09-13 10:28:07,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2024-09-13 10:28:07,968 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 20 [2024-09-13 10:28:07,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:07,968 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2024-09-13 10:28:07,968 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 16 states have internal predecessors, (28), 10 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 10:28:07,969 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2024-09-13 10:28:07,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-13 10:28:07,969 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:07,970 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:28:07,990 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-13 10:28:08,173 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:08,174 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting idErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:28:08,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:08,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1809419033, now seen corresponding path program 2 times [2024-09-13 10:28:08,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:08,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276645419] [2024-09-13 10:28:08,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:08,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:08,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-13 10:28:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:08,828 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:08,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:08,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276645419] [2024-09-13 10:28:08,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276645419] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:28:08,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298943679] [2024-09-13 10:28:08,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 10:28:08,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:08,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:28:08,831 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:28:08,833 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 10:28:08,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 10:28:08,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 10:28:08,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-09-13 10:28:08,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:28:08,998 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:09,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:28:09,078 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:09,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298943679] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:28:09,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:28:09,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 26 [2024-09-13 10:28:09,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818211560] [2024-09-13 10:28:09,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:28:09,079 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-13 10:28:09,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:09,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-13 10:28:09,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=648, Unknown=0, NotChecked=0, Total=702 [2024-09-13 10:28:09,080 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 27 states, 25 states have (on average 1.16) internal successors, (29), 17 states have internal predecessors, (29), 11 states have call successors, (11), 11 states have call predecessors, (11), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 10:28:09,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:09,917 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2024-09-13 10:28:09,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-13 10:28:09,918 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 1.16) internal successors, (29), 17 states have internal predecessors, (29), 11 states have call successors, (11), 11 states have call predecessors, (11), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 38 [2024-09-13 10:28:09,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:09,919 INFO L225 Difference]: With dead ends: 111 [2024-09-13 10:28:09,919 INFO L226 Difference]: Without dead ends: 111 [2024-09-13 10:28:09,920 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=1367, Unknown=0, NotChecked=0, Total=1482 [2024-09-13 10:28:09,921 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 123 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 1401 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:09,924 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 259 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1401 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-13 10:28:09,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-09-13 10:28:09,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 101. [2024-09-13 10:28:09,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 67 states have (on average 1.2985074626865671) internal successors, (87), 68 states have internal predecessors, (87), 12 states have call successors, (12), 11 states have call predecessors, (12), 20 states have return successors, (24), 21 states have call predecessors, (24), 12 states have call successors, (24) [2024-09-13 10:28:09,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 123 transitions. [2024-09-13 10:28:09,936 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 123 transitions. Word has length 38 [2024-09-13 10:28:09,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:09,936 INFO L474 AbstractCegarLoop]: Abstraction has 101 states and 123 transitions. [2024-09-13 10:28:09,936 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 1.16) internal successors, (29), 17 states have internal predecessors, (29), 11 states have call successors, (11), 11 states have call predecessors, (11), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 10:28:09,937 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 123 transitions. [2024-09-13 10:28:09,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-13 10:28:09,938 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:09,938 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 1, 1, 1, 1] [2024-09-13 10:28:09,955 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-13 10:28:10,141 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:10,142 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting idErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:28:10,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:10,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1732117816, now seen corresponding path program 3 times [2024-09-13 10:28:10,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:10,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009366511] [2024-09-13 10:28:10,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:10,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:10,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 10:28:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:10,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:10,693 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 1 proven. 158 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 10:28:10,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:10,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009366511] [2024-09-13 10:28:10,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009366511] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:28:10,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661302322] [2024-09-13 10:28:10,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 10:28:10,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:10,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:28:10,696 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:28:10,698 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 10:28:10,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-13 10:28:10,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 10:28:10,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-13 10:28:10,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:28:10,835 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-09-13 10:28:10,836 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:28:11,043 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-09-13 10:28:11,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661302322] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:28:11,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:28:11,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7, 9] total 30 [2024-09-13 10:28:11,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100302490] [2024-09-13 10:28:11,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:28:11,044 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-13 10:28:11,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:11,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-13 10:28:11,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=834, Unknown=0, NotChecked=0, Total=930 [2024-09-13 10:28:11,046 INFO L87 Difference]: Start difference. First operand 101 states and 123 transitions. Second operand has 31 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 20 states have internal predecessors, (38), 14 states have call successors, (15), 10 states have call predecessors, (15), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-13 10:28:11,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:11,889 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2024-09-13 10:28:11,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-13 10:28:11,890 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 20 states have internal predecessors, (38), 14 states have call successors, (15), 10 states have call predecessors, (15), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 41 [2024-09-13 10:28:11,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:11,893 INFO L225 Difference]: With dead ends: 113 [2024-09-13 10:28:11,893 INFO L226 Difference]: Without dead ends: 113 [2024-09-13 10:28:11,894 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=201, Invalid=1691, Unknown=0, NotChecked=0, Total=1892 [2024-09-13 10:28:11,895 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 127 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 1538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:11,898 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 204 Invalid, 1538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-13 10:28:11,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-09-13 10:28:11,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 104. [2024-09-13 10:28:11,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 69 states have (on average 1.289855072463768) internal successors, (89), 70 states have internal predecessors, (89), 12 states have call successors, (12), 11 states have call predecessors, (12), 21 states have return successors, (25), 22 states have call predecessors, (25), 12 states have call successors, (25) [2024-09-13 10:28:11,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 126 transitions. [2024-09-13 10:28:11,911 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 126 transitions. Word has length 41 [2024-09-13 10:28:11,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:11,915 INFO L474 AbstractCegarLoop]: Abstraction has 104 states and 126 transitions. [2024-09-13 10:28:11,915 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 20 states have internal predecessors, (38), 14 states have call successors, (15), 10 states have call predecessors, (15), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-13 10:28:11,916 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 126 transitions. [2024-09-13 10:28:11,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-13 10:28:11,917 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:11,917 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 1, 1, 1, 1] [2024-09-13 10:28:11,931 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-13 10:28:12,121 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-13 10:28:12,122 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting idErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:28:12,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:12,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1784760135, now seen corresponding path program 4 times [2024-09-13 10:28:12,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:12,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866646600] [2024-09-13 10:28:12,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:12,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:12,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-13 10:28:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:12,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:12,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:12,713 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 2 proven. 160 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-13 10:28:12,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:12,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866646600] [2024-09-13 10:28:12,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866646600] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:28:12,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431903516] [2024-09-13 10:28:12,714 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 10:28:12,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:12,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:28:12,716 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:28:12,719 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-13 10:28:12,774 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 10:28:12,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 10:28:12,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-13 10:28:12,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:28:12,937 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 49 proven. 12 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-09-13 10:28:12,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:28:13,432 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 49 proven. 21 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-09-13 10:28:13,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431903516] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:28:13,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:28:13,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 9, 12] total 35 [2024-09-13 10:28:13,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284606565] [2024-09-13 10:28:13,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:28:13,433 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-13 10:28:13,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:13,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-13 10:28:13,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1140, Unknown=0, NotChecked=0, Total=1260 [2024-09-13 10:28:13,435 INFO L87 Difference]: Start difference. First operand 104 states and 126 transitions. Second operand has 36 states, 33 states have (on average 1.393939393939394) internal successors, (46), 25 states have internal predecessors, (46), 14 states have call successors, (15), 9 states have call predecessors, (15), 6 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-13 10:28:14,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:14,193 INFO L93 Difference]: Finished difference Result 115 states and 128 transitions. [2024-09-13 10:28:14,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-13 10:28:14,193 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 1.393939393939394) internal successors, (46), 25 states have internal predecessors, (46), 14 states have call successors, (15), 9 states have call predecessors, (15), 6 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 44 [2024-09-13 10:28:14,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:14,194 INFO L225 Difference]: With dead ends: 115 [2024-09-13 10:28:14,195 INFO L226 Difference]: Without dead ends: 115 [2024-09-13 10:28:14,196 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=250, Invalid=2200, Unknown=0, NotChecked=0, Total=2450 [2024-09-13 10:28:14,196 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 120 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:14,197 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 190 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-13 10:28:14,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-13 10:28:14,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 107. [2024-09-13 10:28:14,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 71 states have (on average 1.267605633802817) internal successors, (90), 72 states have internal predecessors, (90), 12 states have call successors, (12), 11 states have call predecessors, (12), 22 states have return successors, (26), 23 states have call predecessors, (26), 12 states have call successors, (26) [2024-09-13 10:28:14,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 128 transitions. [2024-09-13 10:28:14,205 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 128 transitions. Word has length 44 [2024-09-13 10:28:14,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:14,206 INFO L474 AbstractCegarLoop]: Abstraction has 107 states and 128 transitions. [2024-09-13 10:28:14,206 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 1.393939393939394) internal successors, (46), 25 states have internal predecessors, (46), 14 states have call successors, (15), 9 states have call predecessors, (15), 6 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-13 10:28:14,206 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 128 transitions. [2024-09-13 10:28:14,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-13 10:28:14,207 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:14,207 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 1, 1, 1, 1] [2024-09-13 10:28:14,223 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-13 10:28:14,411 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:14,412 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting idErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:28:14,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:14,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1905944872, now seen corresponding path program 5 times [2024-09-13 10:28:14,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:14,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767956114] [2024-09-13 10:28:14,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:14,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:14,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-13 10:28:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:14,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:14,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:14,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:14,980 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 3 proven. 162 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 10:28:14,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:14,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767956114] [2024-09-13 10:28:14,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767956114] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:28:14,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265360486] [2024-09-13 10:28:14,981 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 10:28:14,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:14,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:28:14,983 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:28:14,985 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-13 10:28:15,037 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-09-13 10:28:15,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 10:28:15,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-13 10:28:15,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:28:15,231 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 54 proven. 22 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-09-13 10:28:15,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:28:15,660 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 54 proven. 38 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-09-13 10:28:15,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265360486] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:28:15,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:28:15,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 11, 15] total 36 [2024-09-13 10:28:15,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941880038] [2024-09-13 10:28:15,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:28:15,661 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-13 10:28:15,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:15,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-13 10:28:15,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1208, Unknown=0, NotChecked=0, Total=1332 [2024-09-13 10:28:15,664 INFO L87 Difference]: Start difference. First operand 107 states and 128 transitions. Second operand has 37 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 24 states have internal predecessors, (46), 14 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2024-09-13 10:28:16,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:16,398 INFO L93 Difference]: Finished difference Result 117 states and 130 transitions. [2024-09-13 10:28:16,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-13 10:28:16,399 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 24 states have internal predecessors, (46), 14 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 47 [2024-09-13 10:28:16,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:16,400 INFO L225 Difference]: With dead ends: 117 [2024-09-13 10:28:16,400 INFO L226 Difference]: Without dead ends: 117 [2024-09-13 10:28:16,401 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=275, Invalid=2377, Unknown=0, NotChecked=0, Total=2652 [2024-09-13 10:28:16,402 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 171 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:16,402 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 153 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-13 10:28:16,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-09-13 10:28:16,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 110. [2024-09-13 10:28:16,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 73 states have (on average 1.2465753424657535) internal successors, (91), 74 states have internal predecessors, (91), 12 states have call successors, (12), 11 states have call predecessors, (12), 23 states have return successors, (27), 24 states have call predecessors, (27), 12 states have call successors, (27) [2024-09-13 10:28:16,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 130 transitions. [2024-09-13 10:28:16,421 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 130 transitions. Word has length 47 [2024-09-13 10:28:16,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:16,422 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 130 transitions. [2024-09-13 10:28:16,422 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 24 states have internal predecessors, (46), 14 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2024-09-13 10:28:16,422 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 130 transitions. [2024-09-13 10:28:16,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-13 10:28:16,423 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:16,427 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 5, 5, 5, 1, 1, 1, 1] [2024-09-13 10:28:16,443 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-13 10:28:16,629 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:16,630 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting idErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:28:16,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:16,630 INFO L85 PathProgramCache]: Analyzing trace with hash -536030809, now seen corresponding path program 6 times [2024-09-13 10:28:16,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:16,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385658323] [2024-09-13 10:28:16,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:16,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:16,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:16,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-13 10:28:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:17,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:17,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:17,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:17,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:17,243 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 4 proven. 164 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-13 10:28:17,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:17,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385658323] [2024-09-13 10:28:17,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385658323] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:28:17,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850018886] [2024-09-13 10:28:17,244 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-13 10:28:17,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:17,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:28:17,245 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:28:17,246 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-13 10:28:17,307 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-09-13 10:28:17,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 10:28:17,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-13 10:28:17,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:28:17,752 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2024-09-13 10:28:17,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:28:18,118 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 11