./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-simple/nested_4.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/nested_4.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 04d6fb36 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReachWitnessValidation.xml -i ../sv-benchmarks/c/loop-simple/nested_4.c ../results/automizer-verification-files/SV-COMP24_unreach-call/nested_4.yml/witness-2.1.yml -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-04d6fb3-m [2024-09-15 20:11:47,333 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 20:11:47,387 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-15 20:11:47,392 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 20:11:47,393 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 20:11:47,415 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 20:11:47,417 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 20:11:47,417 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 20:11:47,418 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 20:11:47,420 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 20:11:47,420 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 20:11:47,421 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 20:11:47,421 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 20:11:47,423 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 20:11:47,423 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 20:11:47,423 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 20:11:47,423 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 20:11:47,424 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 20:11:47,424 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-15 20:11:47,424 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 20:11:47,424 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 20:11:47,424 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 20:11:47,424 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 20:11:47,425 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 20:11:47,425 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 20:11:47,425 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 20:11:47,425 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 20:11:47,425 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 20:11:47,425 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 20:11:47,425 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 20:11:47,426 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 20:11:47,426 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 20:11:47,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:11:47,426 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 20:11:47,426 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 20:11:47,426 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 20:11:47,426 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-15 20:11:47,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-15 20:11:47,427 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 20:11:47,427 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 20:11:47,427 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 20:11:47,428 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 20:11:47,428 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-15 20:11:47,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 20:11:47,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 20:11:47,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 20:11:47,657 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-15 20:11:47,658 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-15 20:11:47,659 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/nested_4.yml/witness-2.1.yml [2024-09-15 20:11:47,702 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 20:11:47,703 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 20:11:47,703 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-simple/nested_4.c [2024-09-15 20:11:49,136 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 20:11:49,310 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 20:11:49,311 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-simple/nested_4.c [2024-09-15 20:11:49,319 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/3587ab331/d6a21d15d2e843f790a365923b2deaf8/FLAGec44d2217 [2024-09-15 20:11:49,333 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/3587ab331/d6a21d15d2e843f790a365923b2deaf8 [2024-09-15 20:11:49,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 20:11:49,335 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-15 20:11:49,338 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 20:11:49,338 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 20:11:49,342 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 20:11:49,343 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:11:47" (1/2) ... [2024-09-15 20:11:49,344 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28d18fa9 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:11:49, skipping insertion in model container [2024-09-15 20:11:49,346 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:11:47" (1/2) ... [2024-09-15 20:11:49,348 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@184726aa and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:11:49, skipping insertion in model container [2024-09-15 20:11:49,348 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:11:49" (2/2) ... [2024-09-15 20:11:49,349 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28d18fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:11:49, skipping insertion in model container [2024-09-15 20:11:49,349 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:11:49" (2/2) ... [2024-09-15 20:11:49,357 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-15 20:11:49,360 INFO L1541 ArrayList]: Loop invariant at [L23-L29] ((((c == 6) && (b <= 6)) && (d == 6)) && (a <= 5)) [2024-09-15 20:11:49,361 INFO L1541 ArrayList]: Loop invariant at [L25-L27] (((((((((((((((b <= 5) && (5 == c)) && (d == 1)) && (a <= 5)) || ((((b <= 5) && (d == 3)) && (5 == c)) && (a <= 5))) || (((b <= 5) && (a <= 5)) && (c == 1))) || ((((d == 4) && (b <= 5)) && (5 == c)) && (a <= 5))) || ((((d == 0) && (b <= 5)) && (5 == c)) && (a <= 5))) || (((b <= 5) && (a <= 5)) && (c == 3))) || ((((b <= 5) && (5 == c)) && (d == 2)) && (a <= 5))) || (((b <= 5) && (c == 0)) && (a <= 5))) || ((((b <= 5) && (5 == c)) && (d == 6)) && (a <= 5))) || (((b <= 5) && (c == 2)) && (a <= 5))) || (((b <= 5) && (c == 4)) && (a <= 5))) || ((((b <= 5) && (5 == c)) && (5 == d)) && (a <= 5))) [2024-09-15 20:11:49,361 INFO L1541 ArrayList]: Loop invariant at [L24-L28] (((((((((b <= 5) && (a <= 5)) && (c == 1)) || (((b <= 5) && (5 == c)) && (a <= 5))) || (((b <= 5) && (a <= 5)) && (c == 3))) || ((((c == 6) && (b <= 5)) && (d == 6)) && (a <= 5))) || (((b <= 5) && (c == 0)) && (a <= 5))) || (((b <= 5) && (c == 2)) && (a <= 5))) || (((b <= 5) && (c == 4)) && (a <= 5))) [2024-09-15 20:11:49,361 INFO L1541 ArrayList]: Loop invariant at [L22-L30] ((((b == 6) && (c == 6)) && (a <= 6)) && (d == 6)) [2024-09-15 20:11:49,374 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 20:11:49,508 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-simple/nested_4.c[841,854] [2024-09-15 20:11:49,516 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:11:49,529 INFO L200 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-09-15 20:11:49,582 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-simple/nested_4.c[841,854] [2024-09-15 20:11:49,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:11:49,597 INFO L204 MainTranslator]: Completed translation [2024-09-15 20:11:49,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:11:49 WrapperNode [2024-09-15 20:11:49,598 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 20:11:49,598 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-15 20:11:49,599 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-15 20:11:49,599 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-15 20:11:49,604 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:11:49" (1/1) ... [2024-09-15 20:11:49,609 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:11:49" (1/1) ... [2024-09-15 20:11:49,632 INFO L138 Inliner]: procedures = 10, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 49 [2024-09-15 20:11:49,634 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-15 20:11:49,635 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 20:11:49,635 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 20:11:49,635 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 20:11:49,642 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:11:49" (1/1) ... [2024-09-15 20:11:49,643 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:11:49" (1/1) ... [2024-09-15 20:11:49,644 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:11:49" (1/1) ... [2024-09-15 20:11:49,653 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-15 20:11:49,657 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:11:49" (1/1) ... [2024-09-15 20:11:49,657 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:11:49" (1/1) ... [2024-09-15 20:11:49,662 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:11:49" (1/1) ... [2024-09-15 20:11:49,666 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:11:49" (1/1) ... [2024-09-15 20:11:49,668 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:11:49" (1/1) ... [2024-09-15 20:11:49,669 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:11:49" (1/1) ... [2024-09-15 20:11:49,670 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 20:11:49,670 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 20:11:49,670 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 20:11:49,670 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 20:11:49,671 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:11:49" (1/1) ... [2024-09-15 20:11:49,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:11:49,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:11:49,708 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-15 20:11:49,710 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-15 20:11:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 20:11:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 20:11:49,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 20:11:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-15 20:11:49,812 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 20:11:49,813 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 20:11:49,992 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2024-09-15 20:11:49,996 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 20:11:50,015 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 20:11:50,016 INFO L318 CfgBuilder]: Removed 4 assume(true) statements. [2024-09-15 20:11:50,016 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:11:50 BoogieIcfgContainer [2024-09-15 20:11:50,016 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 20:11:50,018 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-15 20:11:50,018 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-15 20:11:50,021 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-15 20:11:50,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:11:47" (1/4) ... [2024-09-15 20:11:50,021 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12db562 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 15.09 08:11:50, skipping insertion in model container [2024-09-15 20:11:50,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 08:11:49" (2/4) ... [2024-09-15 20:11:50,022 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12db562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 08:11:50, skipping insertion in model container [2024-09-15 20:11:50,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:11:49" (3/4) ... [2024-09-15 20:11:50,022 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12db562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 08:11:50, skipping insertion in model container [2024-09-15 20:11:50,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:11:50" (4/4) ... [2024-09-15 20:11:50,023 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_4.c [2024-09-15 20:11:50,037 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-15 20:11:50,038 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-09-15 20:11:50,078 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-15 20:11:50,085 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;@7f537f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-15 20:11:50,085 INFO L337 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-09-15 20:11:50,088 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:50,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-09-15 20:11:50,092 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:11:50,092 INFO L216 NwaCegarLoop]: trace histogram [1, 1] [2024-09-15 20:11:50,093 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 2 more)] === [2024-09-15 20:11:50,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:11:50,098 INFO L85 PathProgramCache]: Analyzing trace with hash 3228, now seen corresponding path program 1 times [2024-09-15 20:11:50,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:11:50,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406115359] [2024-09-15 20:11:50,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:11:50,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:11:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:11:50,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:11:50,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:11:50,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406115359] [2024-09-15 20:11:50,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406115359] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:11:50,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:11:50,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-09-15 20:11:50,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413302018] [2024-09-15 20:11:50,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:11:50,274 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:11:50,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:11:50,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:11:50,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:11:50,297 INFO L87 Difference]: Start difference. First operand has 21 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:50,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:11:50,357 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2024-09-15 20:11:50,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:11:50,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2024-09-15 20:11:50,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:11:50,363 INFO L225 Difference]: With dead ends: 23 [2024-09-15 20:11:50,363 INFO L226 Difference]: Without dead ends: 21 [2024-09-15 20:11:50,365 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:11:50,369 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:11:50,370 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:11:50,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-15 20:11:50,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-09-15 20:11:50,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.5) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:50,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-09-15 20:11:50,391 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 2 [2024-09-15 20:11:50,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:11:50,391 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-09-15 20:11:50,391 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:50,392 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-09-15 20:11:50,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-09-15 20:11:50,392 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:11:50,392 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-09-15 20:11:50,393 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-15 20:11:50,393 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 2 more)] === [2024-09-15 20:11:50,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:11:50,393 INFO L85 PathProgramCache]: Analyzing trace with hash 3103455, now seen corresponding path program 1 times [2024-09-15 20:11:50,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:11:50,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970455265] [2024-09-15 20:11:50,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:11:50,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:11:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:11:50,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:11:50,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:11:50,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970455265] [2024-09-15 20:11:50,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970455265] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:11:50,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:11:50,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 20:11:50,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200054969] [2024-09-15 20:11:50,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:11:50,506 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-15 20:11:50,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:11:50,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-15 20:11:50,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:11:50,508 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:50,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:11:50,566 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2024-09-15 20:11:50,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-15 20:11:50,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-09-15 20:11:50,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:11:50,567 INFO L225 Difference]: With dead ends: 23 [2024-09-15 20:11:50,567 INFO L226 Difference]: Without dead ends: 23 [2024-09-15 20:11:50,567 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:11:50,568 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:11:50,568 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:11:50,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-15 20:11:50,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-15 20:11:50,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:50,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-09-15 20:11:50,574 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 4 [2024-09-15 20:11:50,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:11:50,574 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-09-15 20:11:50,575 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:50,575 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-09-15 20:11:50,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-09-15 20:11:50,575 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:11:50,575 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-09-15 20:11:50,575 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-15 20:11:50,575 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 2 more)] === [2024-09-15 20:11:50,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:11:50,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1312545374, now seen corresponding path program 1 times [2024-09-15 20:11:50,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:11:50,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421923968] [2024-09-15 20:11:50,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:11:50,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:11:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:11:50,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:11:50,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:11:50,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421923968] [2024-09-15 20:11:50,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421923968] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:11:50,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:11:50,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-15 20:11:50,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957271605] [2024-09-15 20:11:50,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:11:50,671 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 20:11:50,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:11:50,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 20:11:50,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-09-15 20:11:50,672 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:50,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:11:50,739 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2024-09-15 20:11:50,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 20:11:50,740 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-09-15 20:11:50,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:11:50,741 INFO L225 Difference]: With dead ends: 43 [2024-09-15 20:11:50,741 INFO L226 Difference]: Without dead ends: 43 [2024-09-15 20:11:50,742 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-09-15 20:11:50,743 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 30 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:11:50,744 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 21 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:11:50,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-15 20:11:50,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2024-09-15 20:11:50,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:50,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-09-15 20:11:50,750 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 6 [2024-09-15 20:11:50,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:11:50,750 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-09-15 20:11:50,751 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:50,751 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-09-15 20:11:50,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-15 20:11:50,751 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:11:50,751 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:11:50,752 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-15 20:11:50,753 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 2 more)] === [2024-09-15 20:11:50,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:11:50,753 INFO L85 PathProgramCache]: Analyzing trace with hash 67394922, now seen corresponding path program 1 times [2024-09-15 20:11:50,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:11:50,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278504226] [2024-09-15 20:11:50,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:11:50,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:11:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:11:50,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:11:50,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:11:50,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278504226] [2024-09-15 20:11:50,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278504226] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:11:50,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:11:50,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-15 20:11:50,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964207820] [2024-09-15 20:11:50,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:11:50,826 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:11:50,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:11:50,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:11:50,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:11:50,827 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:50,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:11:50,849 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2024-09-15 20:11:50,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:11:50,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-09-15 20:11:50,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:11:50,850 INFO L225 Difference]: With dead ends: 31 [2024-09-15 20:11:50,850 INFO L226 Difference]: Without dead ends: 31 [2024-09-15 20:11:50,850 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:11:50,851 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:11:50,851 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:11:50,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-09-15 20:11:50,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-09-15 20:11:50,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:50,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2024-09-15 20:11:50,854 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 11 [2024-09-15 20:11:50,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:11:50,854 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2024-09-15 20:11:50,854 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:50,854 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2024-09-15 20:11:50,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-15 20:11:50,854 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:11:50,855 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:11:50,855 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-15 20:11:50,855 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 2 more)] === [2024-09-15 20:11:50,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:11:50,855 INFO L85 PathProgramCache]: Analyzing trace with hash 373963442, now seen corresponding path program 1 times [2024-09-15 20:11:50,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:11:50,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867599917] [2024-09-15 20:11:50,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:11:50,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:11:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:11:50,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:11:50,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:11:50,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867599917] [2024-09-15 20:11:50,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867599917] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:11:50,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670964001] [2024-09-15 20:11:50,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:11:50,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:11:50,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:11:50,896 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:11:50,898 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-15 20:11:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:11:50,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-15 20:11:50,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:11:50,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:11:50,961 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:11:50,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:11:50,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670964001] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:11:50,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:11:50,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-09-15 20:11:50,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250099578] [2024-09-15 20:11:50,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:11:50,977 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-15 20:11:50,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:11:50,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-15 20:11:50,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-15 20:11:50,978 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:51,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:11:51,006 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2024-09-15 20:11:51,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-15 20:11:51,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-09-15 20:11:51,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:11:51,008 INFO L225 Difference]: With dead ends: 43 [2024-09-15 20:11:51,008 INFO L226 Difference]: Without dead ends: 43 [2024-09-15 20:11:51,008 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-15 20:11:51,008 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:11:51,009 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:11:51,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-15 20:11:51,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-09-15 20:11:51,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.3421052631578947) internal successors, (51), 42 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:51,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2024-09-15 20:11:51,012 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 13 [2024-09-15 20:11:51,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:11:51,012 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2024-09-15 20:11:51,013 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:51,013 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2024-09-15 20:11:51,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-15 20:11:51,013 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:11:51,013 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:11:51,026 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-15 20:11:51,214 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:11:51,214 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 2 more)] === [2024-09-15 20:11:51,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:11:51,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1895868042, now seen corresponding path program 2 times [2024-09-15 20:11:51,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:11:51,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82252199] [2024-09-15 20:11:51,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:11:51,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:11:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:11:51,369 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:11:51,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:11:51,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82252199] [2024-09-15 20:11:51,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82252199] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:11:51,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988475769] [2024-09-15 20:11:51,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 20:11:51,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:11:51,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:11:51,374 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:11:51,375 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-15 20:11:51,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 20:11:51,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:11:51,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-15 20:11:51,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:11:51,431 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:11:51,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:11:51,465 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:11:51,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988475769] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:11:51,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:11:51,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2024-09-15 20:11:51,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32242719] [2024-09-15 20:11:51,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:11:51,467 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-15 20:11:51,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:11:51,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-15 20:11:51,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-09-15 20:11:51,468 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:51,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:11:51,495 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2024-09-15 20:11:51,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-15 20:11:51,495 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-09-15 20:11:51,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:11:51,496 INFO L225 Difference]: With dead ends: 51 [2024-09-15 20:11:51,496 INFO L226 Difference]: Without dead ends: 51 [2024-09-15 20:11:51,496 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-09-15 20:11:51,497 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:11:51,497 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:11:51,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-15 20:11:51,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-09-15 20:11:51,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.326086956521739) internal successors, (61), 50 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:51,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2024-09-15 20:11:51,500 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 19 [2024-09-15 20:11:51,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:11:51,500 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2024-09-15 20:11:51,500 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:51,501 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2024-09-15 20:11:51,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-15 20:11:51,501 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:11:51,501 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:11:51,515 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-15 20:11:51,701 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-15 20:11:51,702 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 2 more)] === [2024-09-15 20:11:51,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:11:51,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1140891418, now seen corresponding path program 3 times [2024-09-15 20:11:51,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:11:51,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223756358] [2024-09-15 20:11:51,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:11:51,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:11:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:11:51,878 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-09-15 20:11:51,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:11:51,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223756358] [2024-09-15 20:11:51,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223756358] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:11:51,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382895970] [2024-09-15 20:11:51,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 20:11:51,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:11:51,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:11:51,884 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:11:51,886 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-15 20:11:51,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-15 20:11:51,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:11:51,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-15 20:11:51,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:11:52,034 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-09-15 20:11:52,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:11:52,163 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-09-15 20:11:52,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382895970] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:11:52,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:11:52,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2024-09-15 20:11:52,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763950208] [2024-09-15 20:11:52,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:11:52,164 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-15 20:11:52,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:11:52,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-15 20:11:52,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2024-09-15 20:11:52,165 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:52,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:11:52,444 INFO L93 Difference]: Finished difference Result 235 states and 288 transitions. [2024-09-15 20:11:52,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-15 20:11:52,446 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-09-15 20:11:52,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:11:52,448 INFO L225 Difference]: With dead ends: 235 [2024-09-15 20:11:52,453 INFO L226 Difference]: Without dead ends: 235 [2024-09-15 20:11:52,453 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2024-09-15 20:11:52,454 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 146 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 20:11:52,454 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 39 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 20:11:52,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-09-15 20:11:52,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 229. [2024-09-15 20:11:52,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 224 states have (on average 1.2544642857142858) internal successors, (281), 228 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:52,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 281 transitions. [2024-09-15 20:11:52,477 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 281 transitions. Word has length 23 [2024-09-15 20:11:52,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:11:52,477 INFO L474 AbstractCegarLoop]: Abstraction has 229 states and 281 transitions. [2024-09-15 20:11:52,478 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:52,478 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 281 transitions. [2024-09-15 20:11:52,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-15 20:11:52,478 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:11:52,479 INFO L216 NwaCegarLoop]: trace histogram [14, 12, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-09-15 20:11:52,491 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-15 20:11:52,679 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-15 20:11:52,680 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 2 more)] === [2024-09-15 20:11:52,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:11:52,680 INFO L85 PathProgramCache]: Analyzing trace with hash 159859874, now seen corresponding path program 4 times [2024-09-15 20:11:52,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:11:52,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823506387] [2024-09-15 20:11:52,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:11:52,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:11:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:11:52,938 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-15 20:11:52,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:11:52,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823506387] [2024-09-15 20:11:52,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823506387] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:11:52,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585911227] [2024-09-15 20:11:52,939 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-15 20:11:52,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:11:52,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:11:52,940 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:11:52,942 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-15 20:11:52,978 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-15 20:11:52,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:11:52,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-15 20:11:52,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:11:53,173 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-15 20:11:53,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:11:53,365 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-15 20:11:53,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585911227] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:11:53,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:11:53,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 16 [2024-09-15 20:11:53,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5552949] [2024-09-15 20:11:53,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:11:53,366 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-15 20:11:53,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:11:53,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-15 20:11:53,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2024-09-15 20:11:53,370 INFO L87 Difference]: Start difference. First operand 229 states and 281 transitions. Second operand has 17 states, 16 states have (on average 3.25) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:53,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:11:53,588 INFO L93 Difference]: Finished difference Result 303 states and 360 transitions. [2024-09-15 20:11:53,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-15 20:11:53,589 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.25) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-09-15 20:11:53,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:11:53,590 INFO L225 Difference]: With dead ends: 303 [2024-09-15 20:11:53,590 INFO L226 Difference]: Without dead ends: 303 [2024-09-15 20:11:53,591 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2024-09-15 20:11:53,591 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 111 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 20:11:53,591 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 54 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 20:11:53,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2024-09-15 20:11:53,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 297. [2024-09-15 20:11:53,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 292 states have (on average 1.2089041095890412) internal successors, (353), 296 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:53,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 353 transitions. [2024-09-15 20:11:53,606 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 353 transitions. Word has length 40 [2024-09-15 20:11:53,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:11:53,606 INFO L474 AbstractCegarLoop]: Abstraction has 297 states and 353 transitions. [2024-09-15 20:11:53,606 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.25) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:53,606 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 353 transitions. [2024-09-15 20:11:53,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-09-15 20:11:53,607 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:11:53,608 INFO L216 NwaCegarLoop]: trace histogram [21, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-09-15 20:11:53,621 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-15 20:11:53,808 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:11:53,809 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 2 more)] === [2024-09-15 20:11:53,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:11:53,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1258332134, now seen corresponding path program 5 times [2024-09-15 20:11:53,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:11:53,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037338484] [2024-09-15 20:11:53,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:11:53,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:11:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:11:54,073 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-09-15 20:11:54,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:11:54,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037338484] [2024-09-15 20:11:54,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037338484] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:11:54,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387281104] [2024-09-15 20:11:54,074 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-15 20:11:54,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:11:54,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:11:54,076 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:11:54,077 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-15 20:11:54,144 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-09-15 20:11:54,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:11:54,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-15 20:11:54,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:11:54,367 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-09-15 20:11:54,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:11:54,604 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-09-15 20:11:54,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387281104] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:11:54,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:11:54,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 19 [2024-09-15 20:11:54,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929457818] [2024-09-15 20:11:54,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:11:54,605 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-15 20:11:54,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:11:54,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-15 20:11:54,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2024-09-15 20:11:54,606 INFO L87 Difference]: Start difference. First operand 297 states and 353 transitions. Second operand has 20 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:54,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:11:54,807 INFO L93 Difference]: Finished difference Result 371 states and 432 transitions. [2024-09-15 20:11:54,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-15 20:11:54,808 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-09-15 20:11:54,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:11:54,809 INFO L225 Difference]: With dead ends: 371 [2024-09-15 20:11:54,809 INFO L226 Difference]: Without dead ends: 371 [2024-09-15 20:11:54,810 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2024-09-15 20:11:54,810 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 163 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 20:11:54,810 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 58 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 20:11:54,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-09-15 20:11:54,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 365. [2024-09-15 20:11:54,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 360 states have (on average 1.1805555555555556) internal successors, (425), 364 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:54,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 425 transitions. [2024-09-15 20:11:54,819 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 425 transitions. Word has length 57 [2024-09-15 20:11:54,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:11:54,819 INFO L474 AbstractCegarLoop]: Abstraction has 365 states and 425 transitions. [2024-09-15 20:11:54,820 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:54,820 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 425 transitions. [2024-09-15 20:11:54,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-15 20:11:54,821 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:11:54,821 INFO L216 NwaCegarLoop]: trace histogram [28, 24, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-09-15 20:11:54,835 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-15 20:11:55,021 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:11:55,023 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 2 more)] === [2024-09-15 20:11:55,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:11:55,023 INFO L85 PathProgramCache]: Analyzing trace with hash -272456798, now seen corresponding path program 6 times [2024-09-15 20:11:55,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:11:55,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935300272] [2024-09-15 20:11:55,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:11:55,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:11:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:11:55,368 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-09-15 20:11:55,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:11:55,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935300272] [2024-09-15 20:11:55,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935300272] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:11:55,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879623977] [2024-09-15 20:11:55,369 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-15 20:11:55,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:11:55,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:11:55,371 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:11:55,372 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-15 20:11:55,412 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-09-15 20:11:55,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:11:55,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-15 20:11:55,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:11:55,977 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2024-09-15 20:11:55,977 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-15 20:11:55,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879623977] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:11:55,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-15 20:11:55,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 14 [2024-09-15 20:11:55,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697702199] [2024-09-15 20:11:55,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:11:55,978 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-15 20:11:55,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:11:55,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-15 20:11:55,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2024-09-15 20:11:55,978 INFO L87 Difference]: Start difference. First operand 365 states and 425 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:56,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:11:56,033 INFO L93 Difference]: Finished difference Result 365 states and 409 transitions. [2024-09-15 20:11:56,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-15 20:11:56,035 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-09-15 20:11:56,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:11:56,036 INFO L225 Difference]: With dead ends: 365 [2024-09-15 20:11:56,036 INFO L226 Difference]: Without dead ends: 365 [2024-09-15 20:11:56,037 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2024-09-15 20:11:56,037 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:11:56,037 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 20 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:11:56,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2024-09-15 20:11:56,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 337. [2024-09-15 20:11:56,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 332 states have (on average 1.141566265060241) internal successors, (379), 336 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:56,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 379 transitions. [2024-09-15 20:11:56,057 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 379 transitions. Word has length 74 [2024-09-15 20:11:56,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:11:56,057 INFO L474 AbstractCegarLoop]: Abstraction has 337 states and 379 transitions. [2024-09-15 20:11:56,058 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:56,058 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 379 transitions. [2024-09-15 20:11:56,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-09-15 20:11:56,059 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:11:56,059 INFO L216 NwaCegarLoop]: trace histogram [28, 24, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:11:56,091 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-15 20:11:56,259 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-15 20:11:56,260 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 2 more)] === [2024-09-15 20:11:56,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:11:56,260 INFO L85 PathProgramCache]: Analyzing trace with hash 727780469, now seen corresponding path program 1 times [2024-09-15 20:11:56,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:11:56,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263751448] [2024-09-15 20:11:56,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:11:56,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:11:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:11:56,613 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 778 trivial. 0 not checked. [2024-09-15 20:11:56,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:11:56,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263751448] [2024-09-15 20:11:56,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263751448] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:11:56,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94616723] [2024-09-15 20:11:56,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:11:56,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:11:56,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:11:56,619 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:11:56,622 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-15 20:11:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:11:56,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-15 20:11:56,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:11:56,789 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 1 proven. 614 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-09-15 20:11:56,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:11:56,903 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 1 proven. 614 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-09-15 20:11:56,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94616723] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:11:56,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:11:56,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 13 [2024-09-15 20:11:56,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97132613] [2024-09-15 20:11:56,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:11:56,904 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-15 20:11:56,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:11:56,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-15 20:11:56,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-09-15 20:11:56,905 INFO L87 Difference]: Start difference. First operand 337 states and 379 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:57,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:11:57,125 INFO L93 Difference]: Finished difference Result 513 states and 614 transitions. [2024-09-15 20:11:57,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-15 20:11:57,126 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-09-15 20:11:57,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:11:57,127 INFO L225 Difference]: With dead ends: 513 [2024-09-15 20:11:57,128 INFO L226 Difference]: Without dead ends: 513 [2024-09-15 20:11:57,128 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 142 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=209, Invalid=441, Unknown=0, NotChecked=0, Total=650 [2024-09-15 20:11:57,129 INFO L434 NwaCegarLoop]: 6 mSDtfsCounter, 58 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:11:57,129 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 27 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:11:57,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2024-09-15 20:11:57,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 512. [2024-09-15 20:11:57,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 507 states have (on average 1.2090729783037475) internal successors, (613), 511 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:57,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 613 transitions. [2024-09-15 20:11:57,137 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 613 transitions. Word has length 77 [2024-09-15 20:11:57,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:11:57,138 INFO L474 AbstractCegarLoop]: Abstraction has 512 states and 613 transitions. [2024-09-15 20:11:57,139 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:57,139 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 613 transitions. [2024-09-15 20:11:57,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-09-15 20:11:57,141 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:11:57,142 INFO L216 NwaCegarLoop]: trace histogram [70, 60, 11, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1] [2024-09-15 20:11:57,159 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-15 20:11:57,343 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:11:57,344 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 2 more)] === [2024-09-15 20:11:57,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:11:57,345 INFO L85 PathProgramCache]: Analyzing trace with hash 3530168, now seen corresponding path program 1 times [2024-09-15 20:11:57,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:11:57,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768040191] [2024-09-15 20:11:57,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:11:57,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:11:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:11:57,860 INFO L134 CoverageAnalysis]: Checked inductivity of 4998 backedges. 2439 proven. 610 refuted. 0 times theorem prover too weak. 1949 trivial. 0 not checked. [2024-09-15 20:11:57,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:11:57,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768040191] [2024-09-15 20:11:57,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768040191] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:11:57,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488389762] [2024-09-15 20:11:57,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:11:57,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:11:57,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:11:57,863 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) [2024-09-15 20:11:57,867 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-15 20:11:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:11:58,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-15 20:11:58,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:11:58,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4998 backedges. 2440 proven. 610 refuted. 0 times theorem prover too weak. 1948 trivial. 0 not checked. [2024-09-15 20:11:58,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:11:58,818 INFO L134 CoverageAnalysis]: Checked inductivity of 4998 backedges. 2440 proven. 610 refuted. 0 times theorem prover too weak. 1948 trivial. 0 not checked. [2024-09-15 20:11:58,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488389762] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:11:58,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:11:58,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2024-09-15 20:11:58,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168646629] [2024-09-15 20:11:58,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:11:58,820 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-15 20:11:58,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:11:58,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-15 20:11:58,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-09-15 20:11:58,821 INFO L87 Difference]: Start difference. First operand 512 states and 613 transitions. Second operand has 14 states, 13 states have (on average 6.076923076923077) internal successors, (79), 14 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:58,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:11:58,956 INFO L93 Difference]: Finished difference Result 515 states and 569 transitions. [2024-09-15 20:11:58,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-15 20:11:58,956 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.076923076923077) internal successors, (79), 14 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2024-09-15 20:11:58,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:11:58,958 INFO L225 Difference]: With dead ends: 515 [2024-09-15 20:11:58,958 INFO L226 Difference]: Without dead ends: 515 [2024-09-15 20:11:58,958 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 353 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-09-15 20:11:58,958 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 19 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:11:58,959 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 46 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:11:58,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-09-15 20:11:58,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 448. [2024-09-15 20:11:58,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 443 states have (on average 1.1241534988713318) internal successors, (498), 447 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:58,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 498 transitions. [2024-09-15 20:11:58,965 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 498 transitions. Word has length 181 [2024-09-15 20:11:58,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:11:58,965 INFO L474 AbstractCegarLoop]: Abstraction has 448 states and 498 transitions. [2024-09-15 20:11:58,966 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.076923076923077) internal successors, (79), 14 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:11:58,966 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 498 transitions. [2024-09-15 20:11:58,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-09-15 20:11:58,971 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:11:58,971 INFO L216 NwaCegarLoop]: trace histogram [77, 66, 12, 11, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1] [2024-09-15 20:11:58,989 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-15 20:11:59,172 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:11:59,174 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 2 more)] === [2024-09-15 20:11:59,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:11:59,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1153390020, now seen corresponding path program 2 times [2024-09-15 20:11:59,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:11:59,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100927167] [2024-09-15 20:11:59,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:11:59,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:11:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:11:59,690 INFO L134 CoverageAnalysis]: Checked inductivity of 6053 backedges. 3047 proven. 1015 refuted. 0 times theorem prover too weak. 1991 trivial. 0 not checked. [2024-09-15 20:11:59,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:11:59,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100927167] [2024-09-15 20:11:59,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100927167] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:11:59,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841923602] [2024-09-15 20:11:59,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 20:11:59,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:11:59,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:11:59,694 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:11:59,695 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-15 20:11:59,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 20:11:59,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:11:59,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-15 20:11:59,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:12:00,180 INFO L134 CoverageAnalysis]: Checked inductivity of 6053 backedges. 3048 proven. 1015 refuted. 0 times theorem prover too weak. 1990 trivial. 0 not checked. [2024-09-15 20:12:00,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:12:00,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6053 backedges. 3048 proven. 1015 refuted. 0 times theorem prover too weak. 1990 trivial. 0 not checked. [2024-09-15 20:12:00,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841923602] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:12:00,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:12:00,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2024-09-15 20:12:00,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440889913] [2024-09-15 20:12:00,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:12:00,448 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-15 20:12:00,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:12:00,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-15 20:12:00,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-09-15 20:12:00,449 INFO L87 Difference]: Start difference. First operand 448 states and 498 transitions. Second operand has 16 states, 15 states have (on average 6.066666666666666) internal successors, (91), 16 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:00,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:12:00,619 INFO L93 Difference]: Finished difference Result 508 states and 574 transitions. [2024-09-15 20:12:00,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-15 20:12:00,620 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.066666666666666) internal successors, (91), 16 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2024-09-15 20:12:00,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:12:00,621 INFO L225 Difference]: With dead ends: 508 [2024-09-15 20:12:00,621 INFO L226 Difference]: Without dead ends: 508 [2024-09-15 20:12:00,621 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 386 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-09-15 20:12:00,622 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 23 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 20:12:00,622 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 76 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 20:12:00,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2024-09-15 20:12:00,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 448. [2024-09-15 20:12:00,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 443 states have (on average 1.1196388261851016) internal successors, (496), 447 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:00,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 496 transitions. [2024-09-15 20:12:00,627 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 496 transitions. Word has length 198 [2024-09-15 20:12:00,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:12:00,627 INFO L474 AbstractCegarLoop]: Abstraction has 448 states and 496 transitions. [2024-09-15 20:12:00,628 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.066666666666666) internal successors, (91), 16 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:00,628 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 496 transitions. [2024-09-15 20:12:00,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-09-15 20:12:00,629 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:12:00,629 INFO L216 NwaCegarLoop]: trace histogram [77, 66, 13, 12, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1] [2024-09-15 20:12:00,643 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-15 20:12:00,829 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-15 20:12:00,830 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 2 more)] === [2024-09-15 20:12:00,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:12:00,830 INFO L85 PathProgramCache]: Analyzing trace with hash 306248839, now seen corresponding path program 1 times [2024-09-15 20:12:00,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:12:00,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002717848] [2024-09-15 20:12:00,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:12:00,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:12:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:01,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6142 backedges. 3136 proven. 0 refuted. 0 times theorem prover too weak. 3006 trivial. 0 not checked. [2024-09-15 20:12:01,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:12:01,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002717848] [2024-09-15 20:12:01,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002717848] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:12:01,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:12:01,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-15 20:12:01,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69398404] [2024-09-15 20:12:01,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:12:01,603 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-15 20:12:01,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:12:01,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-15 20:12:01,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-09-15 20:12:01,604 INFO L87 Difference]: Start difference. First operand 448 states and 496 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:01,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:12:01,648 INFO L93 Difference]: Finished difference Result 448 states and 495 transitions. [2024-09-15 20:12:01,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-15 20:12:01,649 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 200 [2024-09-15 20:12:01,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:12:01,650 INFO L225 Difference]: With dead ends: 448 [2024-09-15 20:12:01,650 INFO L226 Difference]: Without dead ends: 448 [2024-09-15 20:12:01,650 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-09-15 20:12:01,651 INFO L434 NwaCegarLoop]: 6 mSDtfsCounter, 9 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:12:01,651 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 14 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:12:01,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2024-09-15 20:12:01,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2024-09-15 20:12:01,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 443 states have (on average 1.1173814898419865) internal successors, (495), 447 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:01,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 495 transitions. [2024-09-15 20:12:01,657 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 495 transitions. Word has length 200 [2024-09-15 20:12:01,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:12:01,658 INFO L474 AbstractCegarLoop]: Abstraction has 448 states and 495 transitions. [2024-09-15 20:12:01,658 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:01,658 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 495 transitions. [2024-09-15 20:12:01,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-09-15 20:12:01,659 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:12:01,659 INFO L216 NwaCegarLoop]: trace histogram [78, 67, 13, 12, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1] [2024-09-15 20:12:01,660 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-09-15 20:12:01,660 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 2 more)] === [2024-09-15 20:12:01,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:12:01,660 INFO L85 PathProgramCache]: Analyzing trace with hash -2047605825, now seen corresponding path program 2 times [2024-09-15 20:12:01,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:12:01,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914279357] [2024-09-15 20:12:01,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:12:01,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:12:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:02,499 INFO L134 CoverageAnalysis]: Checked inductivity of 6297 backedges. 3290 proven. 1 refuted. 0 times theorem prover too weak. 3006 trivial. 0 not checked. [2024-09-15 20:12:02,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:12:02,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914279357] [2024-09-15 20:12:02,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914279357] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:12:02,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071764933] [2024-09-15 20:12:02,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 20:12:02,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:12:02,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:12:02,501 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:12:02,509 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-15 20:12:02,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 20:12:02,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:12:02,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-15 20:12:02,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:12:02,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6297 backedges. 3291 proven. 1 refuted. 0 times theorem prover too weak. 3005 trivial. 0 not checked. [2024-09-15 20:12:02,879 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:12:03,090 INFO L134 CoverageAnalysis]: Checked inductivity of 6297 backedges. 243 proven. 1 refuted. 0 times theorem prover too weak. 6053 trivial. 0 not checked. [2024-09-15 20:12:03,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071764933] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:12:03,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:12:03,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 14 [2024-09-15 20:12:03,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199164688] [2024-09-15 20:12:03,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:12:03,091 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-15 20:12:03,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:12:03,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-15 20:12:03,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2024-09-15 20:12:03,092 INFO L87 Difference]: Start difference. First operand 448 states and 495 transitions. Second operand has 15 states, 14 states have (on average 4.0) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:03,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:12:03,412 INFO L93 Difference]: Finished difference Result 448 states and 492 transitions. [2024-09-15 20:12:03,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-15 20:12:03,413 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.0) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 202 [2024-09-15 20:12:03,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:12:03,414 INFO L225 Difference]: With dead ends: 448 [2024-09-15 20:12:03,414 INFO L226 Difference]: Without dead ends: 448 [2024-09-15 20:12:03,415 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=215, Invalid=385, Unknown=0, NotChecked=0, Total=600 [2024-09-15 20:12:03,415 INFO L434 NwaCegarLoop]: 2 mSDtfsCounter, 64 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:12:03,415 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 11 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:12:03,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2024-09-15 20:12:03,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2024-09-15 20:12:03,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 443 states have (on average 1.110609480812641) internal successors, (492), 447 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:03,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 492 transitions. [2024-09-15 20:12:03,420 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 492 transitions. Word has length 202 [2024-09-15 20:12:03,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:12:03,420 INFO L474 AbstractCegarLoop]: Abstraction has 448 states and 492 transitions. [2024-09-15 20:12:03,420 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.0) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:03,421 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 492 transitions. [2024-09-15 20:12:03,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-09-15 20:12:03,421 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:12:03,422 INFO L216 NwaCegarLoop]: trace histogram [79, 68, 13, 12, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1] [2024-09-15 20:12:03,435 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-15 20:12:03,622 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-15 20:12:03,623 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 2 more)] === [2024-09-15 20:12:03,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:12:03,623 INFO L85 PathProgramCache]: Analyzing trace with hash -654172937, now seen corresponding path program 3 times [2024-09-15 20:12:03,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:12:03,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219104169] [2024-09-15 20:12:03,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:12:03,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:12:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:04,401 INFO L134 CoverageAnalysis]: Checked inductivity of 6454 backedges. 3444 proven. 4 refuted. 0 times theorem prover too weak. 3006 trivial. 0 not checked. [2024-09-15 20:12:04,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:12:04,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219104169] [2024-09-15 20:12:04,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219104169] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:12:04,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100955477] [2024-09-15 20:12:04,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 20:12:04,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:12:04,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:12:04,405 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:12:04,409 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-15 20:12:04,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-15 20:12:04,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:12:04,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-15 20:12:04,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:12:04,741 INFO L134 CoverageAnalysis]: Checked inductivity of 6454 backedges. 3440 proven. 4 refuted. 0 times theorem prover too weak. 3010 trivial. 0 not checked. [2024-09-15 20:12:04,742 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:12:05,053 INFO L134 CoverageAnalysis]: Checked inductivity of 6454 backedges. 385 proven. 4 refuted. 0 times theorem prover too weak. 6065 trivial. 0 not checked. [2024-09-15 20:12:05,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100955477] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:12:05,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:12:05,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 17 [2024-09-15 20:12:05,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943095059] [2024-09-15 20:12:05,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:12:05,054 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-15 20:12:05,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:12:05,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-15 20:12:05,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-09-15 20:12:05,055 INFO L87 Difference]: Start difference. First operand 448 states and 492 transitions. Second operand has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 18 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:06,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:12:06,211 INFO L93 Difference]: Finished difference Result 448 states and 490 transitions. [2024-09-15 20:12:06,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-15 20:12:06,216 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 18 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2024-09-15 20:12:06,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:12:06,217 INFO L225 Difference]: With dead ends: 448 [2024-09-15 20:12:06,217 INFO L226 Difference]: Without dead ends: 448 [2024-09-15 20:12:06,217 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=341, Invalid=1065, Unknown=0, NotChecked=0, Total=1406 [2024-09-15 20:12:06,218 INFO L434 NwaCegarLoop]: 2 mSDtfsCounter, 83 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 20:12:06,218 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 15 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 20:12:06,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2024-09-15 20:12:06,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2024-09-15 20:12:06,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 443 states have (on average 1.1060948081264108) internal successors, (490), 447 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:06,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 490 transitions. [2024-09-15 20:12:06,228 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 490 transitions. Word has length 204 [2024-09-15 20:12:06,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:12:06,228 INFO L474 AbstractCegarLoop]: Abstraction has 448 states and 490 transitions. [2024-09-15 20:12:06,229 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 18 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:06,229 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 490 transitions. [2024-09-15 20:12:06,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-09-15 20:12:06,230 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:12:06,230 INFO L216 NwaCegarLoop]: trace histogram [80, 69, 13, 12, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1] [2024-09-15 20:12:06,242 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-15 20:12:06,433 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-15 20:12:06,434 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 2 more)] === [2024-09-15 20:12:06,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:12:06,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1594963921, now seen corresponding path program 4 times [2024-09-15 20:12:06,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:12:06,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572522327] [2024-09-15 20:12:06,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:12:06,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:12:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:07,251 INFO L134 CoverageAnalysis]: Checked inductivity of 6613 backedges. 3598 proven. 9 refuted. 0 times theorem prover too weak. 3006 trivial. 0 not checked. [2024-09-15 20:12:07,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:12:07,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572522327] [2024-09-15 20:12:07,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572522327] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:12:07,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224036219] [2024-09-15 20:12:07,252 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-15 20:12:07,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:12:07,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:12:07,257 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:12:07,261 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-15 20:12:07,360 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-15 20:12:07,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:12:07,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-15 20:12:07,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:12:07,809 INFO L134 CoverageAnalysis]: Checked inductivity of 6613 backedges. 3599 proven. 9 refuted. 0 times theorem prover too weak. 3005 trivial. 0 not checked. [2024-09-15 20:12:07,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:12:08,153 INFO L134 CoverageAnalysis]: Checked inductivity of 6613 backedges. 551 proven. 9 refuted. 0 times theorem prover too weak. 6053 trivial. 0 not checked. [2024-09-15 20:12:08,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224036219] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:12:08,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:12:08,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 20 [2024-09-15 20:12:08,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390513947] [2024-09-15 20:12:08,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:12:08,158 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-15 20:12:08,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:12:08,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-15 20:12:08,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2024-09-15 20:12:08,159 INFO L87 Difference]: Start difference. First operand 448 states and 490 transitions. Second operand has 21 states, 20 states have (on average 3.9) internal successors, (78), 21 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:08,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:12:08,859 INFO L93 Difference]: Finished difference Result 448 states and 488 transitions. [2024-09-15 20:12:08,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-15 20:12:08,859 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.9) internal successors, (78), 21 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2024-09-15 20:12:08,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:12:08,861 INFO L225 Difference]: With dead ends: 448 [2024-09-15 20:12:08,861 INFO L226 Difference]: Without dead ends: 448 [2024-09-15 20:12:08,861 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=363, Invalid=827, Unknown=0, NotChecked=0, Total=1190 [2024-09-15 20:12:08,862 INFO L434 NwaCegarLoop]: 2 mSDtfsCounter, 76 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 20:12:08,862 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 10 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 20:12:08,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2024-09-15 20:12:08,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2024-09-15 20:12:08,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 443 states have (on average 1.1015801354401806) internal successors, (488), 447 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:08,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 488 transitions. [2024-09-15 20:12:08,867 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 488 transitions. Word has length 206 [2024-09-15 20:12:08,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:12:08,867 INFO L474 AbstractCegarLoop]: Abstraction has 448 states and 488 transitions. [2024-09-15 20:12:08,868 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.9) internal successors, (78), 21 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:08,868 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 488 transitions. [2024-09-15 20:12:08,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-09-15 20:12:08,869 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:12:08,869 INFO L216 NwaCegarLoop]: trace histogram [81, 70, 13, 12, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1] [2024-09-15 20:12:08,884 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-15 20:12:09,073 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-15 20:12:09,074 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 2 more)] === [2024-09-15 20:12:09,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:12:09,074 INFO L85 PathProgramCache]: Analyzing trace with hash 542999911, now seen corresponding path program 5 times [2024-09-15 20:12:09,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:12:09,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821265851] [2024-09-15 20:12:09,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:12:09,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:12:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:10,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6774 backedges. 3752 proven. 16 refuted. 0 times theorem prover too weak. 3006 trivial. 0 not checked. [2024-09-15 20:12:10,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:12:10,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821265851] [2024-09-15 20:12:10,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821265851] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:12:10,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308857444] [2024-09-15 20:12:10,032 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-15 20:12:10,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:12:10,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:12:10,035 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:12:10,044 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-15 20:12:10,225 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2024-09-15 20:12:10,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:12:10,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-15 20:12:10,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:12:10,905 INFO L134 CoverageAnalysis]: Checked inductivity of 6774 backedges. 320 proven. 3450 refuted. 0 times theorem prover too weak. 3004 trivial. 0 not checked. [2024-09-15 20:12:10,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:12:11,390 INFO L134 CoverageAnalysis]: Checked inductivity of 6774 backedges. 705 proven. 16 refuted. 0 times theorem prover too weak. 6053 trivial. 0 not checked. [2024-09-15 20:12:11,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308857444] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:12:11,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:12:11,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 7] total 24 [2024-09-15 20:12:11,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542610254] [2024-09-15 20:12:11,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:12:11,392 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-15 20:12:11,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:12:11,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-15 20:12:11,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2024-09-15 20:12:11,392 INFO L87 Difference]: Start difference. First operand 448 states and 488 transitions. Second operand has 25 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:12,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:12:12,903 INFO L93 Difference]: Finished difference Result 661 states and 721 transitions. [2024-09-15 20:12:12,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-09-15 20:12:12,903 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2024-09-15 20:12:12,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:12:12,906 INFO L225 Difference]: With dead ends: 661 [2024-09-15 20:12:12,906 INFO L226 Difference]: Without dead ends: 661 [2024-09-15 20:12:12,908 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1071, Invalid=4935, Unknown=0, NotChecked=0, Total=6006 [2024-09-15 20:12:12,908 INFO L434 NwaCegarLoop]: 2 mSDtfsCounter, 198 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-15 20:12:12,909 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 19 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-15 20:12:12,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2024-09-15 20:12:12,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 555. [2024-09-15 20:12:12,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 550 states have (on average 1.0981818181818181) internal successors, (604), 554 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:12,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 604 transitions. [2024-09-15 20:12:12,916 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 604 transitions. Word has length 208 [2024-09-15 20:12:12,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:12:12,916 INFO L474 AbstractCegarLoop]: Abstraction has 555 states and 604 transitions. [2024-09-15 20:12:12,916 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:12,916 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 604 transitions. [2024-09-15 20:12:12,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-09-15 20:12:12,918 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:12:12,918 INFO L216 NwaCegarLoop]: trace histogram [82, 71, 13, 12, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1] [2024-09-15 20:12:12,937 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-15 20:12:13,122 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-15 20:12:13,123 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 2 more)] === [2024-09-15 20:12:13,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:12:13,123 INFO L85 PathProgramCache]: Analyzing trace with hash 2131874975, now seen corresponding path program 6 times [2024-09-15 20:12:13,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:12:13,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089657939] [2024-09-15 20:12:13,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:12:13,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:12:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:13,953 INFO L134 CoverageAnalysis]: Checked inductivity of 6937 backedges. 3906 proven. 25 refuted. 0 times theorem prover too weak. 3006 trivial. 0 not checked. [2024-09-15 20:12:13,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:12:13,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089657939] [2024-09-15 20:12:13,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089657939] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:12:13,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231095699] [2024-09-15 20:12:13,954 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-15 20:12:13,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:12:13,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:12:13,956 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:12:13,957 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-15 20:12:14,007 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-09-15 20:12:14,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:12:14,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-15 20:12:14,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:12:14,484 INFO L134 CoverageAnalysis]: Checked inductivity of 6937 backedges. 3916 proven. 0 refuted. 0 times theorem prover too weak. 3021 trivial. 0 not checked. [2024-09-15 20:12:14,484 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-15 20:12:14,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231095699] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:12:14,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-15 20:12:14,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 16 [2024-09-15 20:12:14,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154755859] [2024-09-15 20:12:14,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:12:14,485 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-15 20:12:14,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:12:14,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-15 20:12:14,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2024-09-15 20:12:14,486 INFO L87 Difference]: Start difference. First operand 555 states and 604 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:14,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:12:14,533 INFO L93 Difference]: Finished difference Result 554 states and 598 transitions. [2024-09-15 20:12:14,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-15 20:12:14,533 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2024-09-15 20:12:14,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:12:14,535 INFO L225 Difference]: With dead ends: 554 [2024-09-15 20:12:14,535 INFO L226 Difference]: Without dead ends: 554 [2024-09-15 20:12:14,535 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2024-09-15 20:12:14,536 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 9 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:12:14,536 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 8 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:12:14,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2024-09-15 20:12:14,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 554. [2024-09-15 20:12:14,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 550 states have (on average 1.0872727272727272) internal successors, (598), 553 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:14,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 598 transitions. [2024-09-15 20:12:14,542 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 598 transitions. Word has length 210 [2024-09-15 20:12:14,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:12:14,542 INFO L474 AbstractCegarLoop]: Abstraction has 554 states and 598 transitions. [2024-09-15 20:12:14,542 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:14,542 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 598 transitions. [2024-09-15 20:12:14,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-09-15 20:12:14,543 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:12:14,543 INFO L216 NwaCegarLoop]: trace histogram [84, 72, 13, 12, 12, 12, 2, 2, 1, 1, 1, 1, 1, 1] [2024-09-15 20:12:14,555 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-15 20:12:14,747 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:12:14,748 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 2 more)] === [2024-09-15 20:12:14,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:12:14,748 INFO L85 PathProgramCache]: Analyzing trace with hash 472610616, now seen corresponding path program 3 times [2024-09-15 20:12:14,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:12:14,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63460006] [2024-09-15 20:12:14,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:12:14,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:12:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:15,634 INFO L134 CoverageAnalysis]: Checked inductivity of 7209 backedges. 3655 proven. 1563 refuted. 0 times theorem prover too weak. 1991 trivial. 0 not checked. [2024-09-15 20:12:15,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:12:15,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63460006] [2024-09-15 20:12:15,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63460006] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:12:15,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612089465] [2024-09-15 20:12:15,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 20:12:15,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:12:15,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:12:15,638 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:12:15,642 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-15 20:12:15,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-15 20:12:15,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:12:15,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-15 20:12:15,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:12:16,113 INFO L134 CoverageAnalysis]: Checked inductivity of 7209 backedges. 4163 proven. 0 refuted. 0 times theorem prover too weak. 3046 trivial. 0 not checked. [2024-09-15 20:12:16,113 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-15 20:12:16,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612089465] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:12:16,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-15 20:12:16,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 23 [2024-09-15 20:12:16,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609533047] [2024-09-15 20:12:16,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:12:16,115 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-15 20:12:16,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:12:16,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-15 20:12:16,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=395, Unknown=0, NotChecked=0, Total=552 [2024-09-15 20:12:16,116 INFO L87 Difference]: Start difference. First operand 554 states and 598 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:16,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:12:16,170 INFO L93 Difference]: Finished difference Result 553 states and 595 transitions. [2024-09-15 20:12:16,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-15 20:12:16,170 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-09-15 20:12:16,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:12:16,172 INFO L225 Difference]: With dead ends: 553 [2024-09-15 20:12:16,172 INFO L226 Difference]: Without dead ends: 553 [2024-09-15 20:12:16,173 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=395, Unknown=0, NotChecked=0, Total=552 [2024-09-15 20:12:16,173 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 9 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:12:16,173 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 8 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:12:16,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2024-09-15 20:12:16,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2024-09-15 20:12:16,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 550 states have (on average 1.0818181818181818) internal successors, (595), 552 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:16,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 595 transitions. [2024-09-15 20:12:16,181 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 595 transitions. Word has length 215 [2024-09-15 20:12:16,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:12:16,181 INFO L474 AbstractCegarLoop]: Abstraction has 553 states and 595 transitions. [2024-09-15 20:12:16,181 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:16,182 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 595 transitions. [2024-09-15 20:12:16,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-09-15 20:12:16,182 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:12:16,183 INFO L216 NwaCegarLoop]: trace histogram [84, 72, 14, 12, 12, 12, 2, 2, 2, 2, 1, 1, 1, 1] [2024-09-15 20:12:16,196 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-15 20:12:16,386 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:12:16,387 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 2 more)] === [2024-09-15 20:12:16,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:12:16,387 INFO L85 PathProgramCache]: Analyzing trace with hash 640125215, now seen corresponding path program 2 times [2024-09-15 20:12:16,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:12:16,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622154136] [2024-09-15 20:12:16,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:12:16,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:12:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:17,029 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 3658 proven. 13 refuted. 0 times theorem prover too weak. 3554 trivial. 0 not checked. [2024-09-15 20:12:17,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:12:17,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622154136] [2024-09-15 20:12:17,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622154136] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:12:17,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021267483] [2024-09-15 20:12:17,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 20:12:17,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:12:17,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:12:17,031 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:12:17,040 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-15 20:12:17,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 20:12:17,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:12:17,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-15 20:12:17,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:12:17,591 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 6 proven. 3667 refuted. 0 times theorem prover too weak. 3552 trivial. 0 not checked. [2024-09-15 20:12:17,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:12:17,646 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 7209 trivial. 0 not checked. [2024-09-15 20:12:17,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021267483] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-15 20:12:17,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-15 20:12:17,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 7] total 15 [2024-09-15 20:12:17,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826971031] [2024-09-15 20:12:17,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:12:17,648 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 20:12:17,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:12:17,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 20:12:17,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-09-15 20:12:17,648 INFO L87 Difference]: Start difference. First operand 553 states and 595 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:17,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:12:17,677 INFO L93 Difference]: Finished difference Result 553 states and 591 transitions. [2024-09-15 20:12:17,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 20:12:17,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 218 [2024-09-15 20:12:17,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:12:17,679 INFO L225 Difference]: With dead ends: 553 [2024-09-15 20:12:17,679 INFO L226 Difference]: Without dead ends: 553 [2024-09-15 20:12:17,679 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-09-15 20:12:17,680 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 7 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:12:17,680 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 7 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:12:17,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2024-09-15 20:12:17,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2024-09-15 20:12:17,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 550 states have (on average 1.0745454545454545) internal successors, (591), 552 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:17,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 591 transitions. [2024-09-15 20:12:17,686 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 591 transitions. Word has length 218 [2024-09-15 20:12:17,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:12:17,686 INFO L474 AbstractCegarLoop]: Abstraction has 553 states and 591 transitions. [2024-09-15 20:12:17,686 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:17,686 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 591 transitions. [2024-09-15 20:12:17,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2024-09-15 20:12:17,687 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:12:17,687 INFO L216 NwaCegarLoop]: trace histogram [126, 108, 21, 18, 18, 18, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-09-15 20:12:17,701 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-09-15 20:12:17,888 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:12:17,890 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 2 more)] === [2024-09-15 20:12:17,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:12:17,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1579747050, now seen corresponding path program 1 times [2024-09-15 20:12:17,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:12:17,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627788578] [2024-09-15 20:12:17,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:12:17,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:12:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:18,364 INFO L134 CoverageAnalysis]: Checked inductivity of 16339 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 16335 trivial. 0 not checked. [2024-09-15 20:12:18,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:12:18,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627788578] [2024-09-15 20:12:18,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627788578] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:12:18,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597410052] [2024-09-15 20:12:18,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:12:18,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:12:18,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:12:18,366 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:12:18,371 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-15 20:12:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:18,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-15 20:12:18,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:12:18,808 INFO L134 CoverageAnalysis]: Checked inductivity of 16339 backedges. 1 proven. 11001 refuted. 0 times theorem prover too weak. 5337 trivial. 0 not checked. [2024-09-15 20:12:18,808 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:12:19,076 INFO L134 CoverageAnalysis]: Checked inductivity of 16339 backedges. 1 proven. 11001 refuted. 0 times theorem prover too weak. 5337 trivial. 0 not checked. [2024-09-15 20:12:19,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597410052] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:12:19,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:12:19,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 12 [2024-09-15 20:12:19,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493370067] [2024-09-15 20:12:19,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:12:19,077 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-15 20:12:19,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:12:19,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-15 20:12:19,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-09-15 20:12:19,078 INFO L87 Difference]: Start difference. First operand 553 states and 591 transitions. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:19,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:12:19,229 INFO L93 Difference]: Finished difference Result 1302 states and 1388 transitions. [2024-09-15 20:12:19,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-15 20:12:19,229 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 328 [2024-09-15 20:12:19,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:12:19,232 INFO L225 Difference]: With dead ends: 1302 [2024-09-15 20:12:19,232 INFO L226 Difference]: Without dead ends: 1302 [2024-09-15 20:12:19,233 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 646 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=175, Invalid=377, Unknown=0, NotChecked=0, Total=552 [2024-09-15 20:12:19,233 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 19 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:12:19,233 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 40 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:12:19,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2024-09-15 20:12:19,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1302. [2024-09-15 20:12:19,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1302 states, 1299 states have (on average 1.0685142417244033) internal successors, (1388), 1301 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:19,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 1388 transitions. [2024-09-15 20:12:19,244 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 1388 transitions. Word has length 328 [2024-09-15 20:12:19,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:12:19,244 INFO L474 AbstractCegarLoop]: Abstraction has 1302 states and 1388 transitions. [2024-09-15 20:12:19,244 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:19,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 1388 transitions. [2024-09-15 20:12:19,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2024-09-15 20:12:19,247 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:12:19,247 INFO L216 NwaCegarLoop]: trace histogram [252, 216, 42, 36, 36, 36, 7, 6, 6, 6, 2, 2, 1, 1, 1, 1] [2024-09-15 20:12:19,265 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-09-15 20:12:19,451 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:12:19,452 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 2 more)] === [2024-09-15 20:12:19,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:12:19,452 INFO L85 PathProgramCache]: Analyzing trace with hash -2059498109, now seen corresponding path program 1 times [2024-09-15 20:12:19,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:12:19,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038564173] [2024-09-15 20:12:19,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:12:19,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:12:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:20,188 INFO L134 CoverageAnalysis]: Checked inductivity of 65670 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 65655 trivial. 0 not checked. [2024-09-15 20:12:20,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:12:20,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038564173] [2024-09-15 20:12:20,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038564173] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:12:20,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:12:20,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-15 20:12:20,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957880736] [2024-09-15 20:12:20,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:12:20,190 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-15 20:12:20,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:12:20,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-15 20:12:20,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:12:20,193 INFO L87 Difference]: Start difference. First operand 1302 states and 1388 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:20,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:12:20,215 INFO L93 Difference]: Finished difference Result 1301 states and 1387 transitions. [2024-09-15 20:12:20,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-15 20:12:20,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 651 [2024-09-15 20:12:20,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:12:20,219 INFO L225 Difference]: With dead ends: 1301 [2024-09-15 20:12:20,219 INFO L226 Difference]: Without dead ends: 1301 [2024-09-15 20:12:20,219 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:12:20,220 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:12:20,220 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 14 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:12:20,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2024-09-15 20:12:20,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 1301. [2024-09-15 20:12:20,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1301 states, 1299 states have (on average 1.0677444187836798) internal successors, (1387), 1300 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:20,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1387 transitions. [2024-09-15 20:12:20,236 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1387 transitions. Word has length 651 [2024-09-15 20:12:20,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:12:20,237 INFO L474 AbstractCegarLoop]: Abstraction has 1301 states and 1387 transitions. [2024-09-15 20:12:20,237 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:20,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1387 transitions. [2024-09-15 20:12:20,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1297 [2024-09-15 20:12:20,254 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:12:20,255 INFO L216 NwaCegarLoop]: trace histogram [504, 432, 84, 72, 72, 72, 14, 12, 12, 12, 2, 2, 2, 2, 1, 1] [2024-09-15 20:12:20,255 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-09-15 20:12:20,255 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 2 more)] === [2024-09-15 20:12:20,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:12:20,256 INFO L85 PathProgramCache]: Analyzing trace with hash 230534172, now seen corresponding path program 2 times [2024-09-15 20:12:20,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:12:20,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588751546] [2024-09-15 20:12:20,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:12:20,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:12:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:22,013 INFO L134 CoverageAnalysis]: Checked inductivity of 263293 backedges. 131975 proven. 0 refuted. 0 times theorem prover too weak. 131318 trivial. 0 not checked. [2024-09-15 20:12:22,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:12:22,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588751546] [2024-09-15 20:12:22,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588751546] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:12:22,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:12:22,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-15 20:12:22,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963874705] [2024-09-15 20:12:22,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:12:22,014 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-15 20:12:22,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:12:22,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-15 20:12:22,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-09-15 20:12:22,016 INFO L87 Difference]: Start difference. First operand 1301 states and 1387 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:22,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:12:22,043 INFO L93 Difference]: Finished difference Result 1300 states and 1386 transitions. [2024-09-15 20:12:22,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-15 20:12:22,044 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1296 [2024-09-15 20:12:22,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:12:22,047 INFO L225 Difference]: With dead ends: 1300 [2024-09-15 20:12:22,047 INFO L226 Difference]: Without dead ends: 1300 [2024-09-15 20:12:22,047 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-09-15 20:12:22,048 INFO L434 NwaCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:12:22,048 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 9 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:12:22,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2024-09-15 20:12:22,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1300. [2024-09-15 20:12:22,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 1299 states have (on average 1.0669745958429562) internal successors, (1386), 1299 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:22,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1386 transitions. [2024-09-15 20:12:22,087 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1386 transitions. Word has length 1296 [2024-09-15 20:12:22,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:12:22,088 INFO L474 AbstractCegarLoop]: Abstraction has 1300 states and 1386 transitions. [2024-09-15 20:12:22,088 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:22,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1386 transitions. [2024-09-15 20:12:22,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1300 [2024-09-15 20:12:22,099 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:12:22,099 INFO L216 NwaCegarLoop]: trace histogram [504, 432, 84, 72, 72, 72, 14, 12, 12, 12, 3, 2, 2, 2, 1, 1, 1, 1] [2024-09-15 20:12:22,099 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-09-15 20:12:22,099 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 2 more)] === [2024-09-15 20:12:22,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:12:22,100 INFO L85 PathProgramCache]: Analyzing trace with hash 190853134, now seen corresponding path program 1 times [2024-09-15 20:12:22,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:12:22,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262990805] [2024-09-15 20:12:22,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:12:22,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:12:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:12:23,981 INFO L134 CoverageAnalysis]: Checked inductivity of 263295 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 263277 trivial. 0 not checked. [2024-09-15 20:12:23,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:12:23,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262990805] [2024-09-15 20:12:23,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262990805] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:12:23,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:12:23,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-15 20:12:23,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59838911] [2024-09-15 20:12:23,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:12:23,984 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-15 20:12:23,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:12:23,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-15 20:12:23,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-09-15 20:12:23,985 INFO L87 Difference]: Start difference. First operand 1300 states and 1386 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:24,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:12:24,011 INFO L93 Difference]: Finished difference Result 1298 states and 1384 transitions. [2024-09-15 20:12:24,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-15 20:12:24,011 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1299 [2024-09-15 20:12:24,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:12:24,012 INFO L225 Difference]: With dead ends: 1298 [2024-09-15 20:12:24,012 INFO L226 Difference]: Without dead ends: 0 [2024-09-15 20:12:24,012 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-09-15 20:12:24,012 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:12:24,013 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:12:24,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-15 20:12:24,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-15 20:12:24,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:24,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-15 20:12:24,013 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1299 [2024-09-15 20:12:24,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:12:24,014 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-15 20:12:24,014 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:12:24,014 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-15 20:12:24,014 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-15 20:12:24,016 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 5 remaining) [2024-09-15 20:12:24,016 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 5 remaining) [2024-09-15 20:12:24,017 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 5 remaining) [2024-09-15 20:12:24,017 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 5 remaining) [2024-09-15 20:12:24,017 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-09-15 20:12:24,018 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-09-15 20:12:24,020 INFO L408 BasicCegarLoop]: Path program histogram: [6, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-09-15 20:12:24,021 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-15 20:12:24,022 INFO L469 ceAbstractionStarter]: Automizer considered 4 witness invariants [2024-09-15 20:12:24,022 INFO L470 ceAbstractionStarter]: WitnessConsidered=4 [2024-09-15 20:12:24,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 08:12:24 BoogieIcfgContainer [2024-09-15 20:12:24,023 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-15 20:12:24,023 INFO L158 Benchmark]: Toolchain (without parser) took 34688.44ms. Allocated memory was 71.3MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 49.1MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 210.0MB. Max. memory is 16.1GB. [2024-09-15 20:12:24,023 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 71.3MB. Free memory is still 51.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:12:24,024 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 71.3MB. Free memory is still 49.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:12:24,024 INFO L158 Benchmark]: CACSL2BoogieTranslator took 260.30ms. Allocated memory is still 71.3MB. Free memory was 48.8MB in the beginning and 35.2MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-15 20:12:24,024 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.25ms. Allocated memory is still 71.3MB. Free memory was 35.2MB in the beginning and 33.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:12:24,024 INFO L158 Benchmark]: Boogie Preprocessor took 34.99ms. Allocated memory is still 71.3MB. Free memory was 33.5MB in the beginning and 31.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 20:12:24,024 INFO L158 Benchmark]: RCFGBuilder took 345.94ms. Allocated memory was 71.3MB in the beginning and 92.3MB in the end (delta: 21.0MB). Free memory was 31.6MB in the beginning and 58.8MB in the end (delta: -27.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-15 20:12:24,026 INFO L158 Benchmark]: TraceAbstraction took 34005.18ms. Allocated memory was 92.3MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 58.0MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 198.5MB. Max. memory is 16.1GB. [2024-09-15 20:12:24,028 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.16ms. Allocated memory is still 71.3MB. Free memory is still 51.8MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 71.3MB. Free memory is still 49.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 260.30ms. Allocated memory is still 71.3MB. Free memory was 48.8MB in the beginning and 35.2MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.25ms. Allocated memory is still 71.3MB. Free memory was 35.2MB in the beginning and 33.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.99ms. Allocated memory is still 71.3MB. Free memory was 33.5MB in the beginning and 31.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 345.94ms. Allocated memory was 71.3MB in the beginning and 92.3MB in the end (delta: 21.0MB). Free memory was 31.6MB in the beginning and 58.8MB in the end (delta: -27.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * TraceAbstraction took 34005.18ms. Allocated memory was 92.3MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 58.0MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 198.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 22]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 23]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 24]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 25]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 32]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 34.0s, OverallIterations: 25, TraceHistogramMax: 504, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.1s, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1036 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1036 mSDsluCounter, 643 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 415 mSDsCounter, 379 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3651 IncrementalHoareTripleChecker+Invalid, 4030 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 379 mSolverCounterUnsat, 228 mSDtfsCounter, 3651 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4696 GetRequests, 4290 SyntacticMatches, 12 SemanticMatches, 394 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3980 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1302occurred in iteration=22, InterpolantAutomatonStates: 371, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 25 MinimizatonAttempts, 296 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 21.6s InterpolantComputationTime, 8415 NumberOfCodeBlocks, 7801 NumberOfCodeBlocksAsserted, 96 NumberOfCheckSat, 10333 ConstructedInterpolants, 0 QuantifiedInterpolants, 39924 SizeOfPredicates, 11 NumberOfNonLiveVariables, 4228 ConjunctsInSsa, 201 ConjunctsInUnsatCore, 56 InterpolantComputations, 12 PerfectInterpolantSequences, 776106/814915 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-15 20:12:24,054 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE