./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/hard2_valuebound5.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1d5fa637 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReachWitnessValidation.xml -i ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c ../results/automizer-verification-files/SV-COMP24_unreach-call/hard2_valuebound5.yml/witness-2.1.yml -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --- Real Ultimate output --- This is Ultimate 0.2.4-dev-1d5fa63-m [2024-09-13 10:20:12,680 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 10:20:12,730 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 10:20:12,734 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 10:20:12,734 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 10:20:12,758 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 10:20:12,759 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 10:20:12,760 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 10:20:12,760 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 10:20:12,762 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 10:20:12,762 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 10:20:12,763 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 10:20:12,763 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 10:20:12,764 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 10:20:12,764 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 10:20:12,767 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 10:20:12,767 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 10:20:12,768 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 10:20:12,768 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 10:20:12,768 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 10:20:12,768 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 10:20:12,769 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 10:20:12,769 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 10:20:12,770 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 10:20:12,770 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 10:20:12,770 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 10:20:12,770 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 10:20:12,770 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 10:20:12,771 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 10:20:12,771 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 10:20:12,771 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 10:20:12,771 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 10:20:12,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 10:20:12,772 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 10:20:12,772 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 10:20:12,773 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 10:20:12,774 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 10:20:12,774 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 10:20:12,774 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 10:20:12,774 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 10:20:12,774 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 10:20:12,775 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 10:20:12,775 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 10:20:13,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 10:20:13,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 10:20:13,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 10:20:13,067 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 10:20:13,067 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 10:20:13,068 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c [2024-09-13 10:20:14,390 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 10:20:14,616 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 10:20:14,616 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c [2024-09-13 10:20:14,624 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/bd27ef6b2/a964ca6753d24b168f78e00f7c314994/FLAGb37c80b3f [2024-09-13 10:20:15,001 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/bd27ef6b2/a964ca6753d24b168f78e00f7c314994 [2024-09-13 10:20:15,003 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 10:20:15,004 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 10:20:15,005 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/hard2_valuebound5.yml/witness-2.1.yml [2024-09-13 10:20:15,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 10:20:15,056 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 10:20:15,057 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 10:20:15,057 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 10:20:15,062 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 10:20:15,062 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:20:15" (1/2) ... [2024-09-13 10:20:15,063 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3094191b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:20:15, skipping insertion in model container [2024-09-13 10:20:15,063 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:20:15" (1/2) ... [2024-09-13 10:20:15,065 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1c0a8d54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:20:15, skipping insertion in model container [2024-09-13 10:20:15,065 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:20:15" (2/2) ... [2024-09-13 10:20:15,066 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3094191b and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:20:15, skipping insertion in model container [2024-09-13 10:20:15,066 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:20:15" (2/2) ... [2024-09-13 10:20:15,076 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 10:20:15,077 INFO L1541 ArrayList]: Loop invariant at [L34-L42] ((((((((((A == r) && (p == 8)) && (r <= 5)) && (q == 0)) && (B == 1)) && (d == 8)) && (4 <= r)) || (((((((A == r) && (d == 4)) && (2 <= r)) && (q == 0)) && (B == 1)) && (p == 4)) && (A <= 5))) || (((((((0 <= A) && (A == r)) && (r <= 5)) && (d == 1)) && (q == 0)) && (B == 1)) && (p == 1))) || (((((((0 <= A) && (A == r)) && (p == 2)) && (d == 2)) && (q == 0)) && (B == 1)) && (A <= 5))) [2024-09-13 10:20:15,077 INFO L1541 ArrayList]: Loop invariant at [L44-L56] ((((((((A == r) && (p == 2)) && (d == 2)) && (q == 0)) && (B == 1)) || (((((A == ((long long) r + 1)) && (d == 1)) && (B == 1)) && (q == 1)) && (p == 1))) || (((((A == r) && (d == 1)) && (q == 0)) && (B == 1)) && (p == 1))) || ((((((A == (q + r)) && (d == p)) && (0 <= A)) && (1 <= p)) && (B == 1)) && (A <= 5))) [2024-09-13 10:20:15,078 INFO L1541 ArrayList]: Function contract at [L11]: requires null, ensures (\old(cond) != 0) [2024-09-13 10:20:15,078 INFO L1541 ArrayList]: Function contract at [L14]: requires (\old(cond) != 0), ensures (\old(cond) != 0) [2024-09-13 10:20:15,098 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 10:20:15,254 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c[526,539] [2024-09-13 10:20:15,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 10:20:15,278 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global Start Parsing Global [2024-09-13 10:20:15,317 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c[526,539] Start Parsing Local Start Parsing Local [2024-09-13 10:20:15,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 10:20:15,350 INFO L204 MainTranslator]: Completed translation [2024-09-13 10:20:15,351 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:20:15 WrapperNode [2024-09-13 10:20:15,351 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 10:20:15,352 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 10:20:15,352 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 10:20:15,353 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 10:20:15,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:20:15" (1/1) ... [2024-09-13 10:20:15,370 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:20:15" (1/1) ... [2024-09-13 10:20:15,389 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2024-09-13 10:20:15,389 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 10:20:15,390 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 10:20:15,390 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 10:20:15,390 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 10:20:15,400 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:20:15" (1/1) ... [2024-09-13 10:20:15,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:20:15" (1/1) ... [2024-09-13 10:20:15,403 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:20:15" (1/1) ... [2024-09-13 10:20:15,413 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure __VERIFIER_assert is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-13 10:20:15,414 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:20:15" (1/1) ... [2024-09-13 10:20:15,414 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:20:15" (1/1) ... [2024-09-13 10:20:15,417 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:20:15" (1/1) ... [2024-09-13 10:20:15,421 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:20:15" (1/1) ... [2024-09-13 10:20:15,422 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:20:15" (1/1) ... [2024-09-13 10:20:15,422 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:20:15" (1/1) ... [2024-09-13 10:20:15,424 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 10:20:15,425 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 10:20:15,425 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 10:20:15,425 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 10:20:15,426 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:20:15" (1/1) ... [2024-09-13 10:20:15,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 10:20:15,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:20:15,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-13 10:20:15,458 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-13 10:20:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 10:20:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-13 10:20:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 10:20:15,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 10:20:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 10:20:15,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 10:20:15,574 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 10:20:15,576 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 10:20:15,727 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-13 10:20:15,753 INFO L? ?]: Removed 43 outVars from TransFormulas that were not future-live. [2024-09-13 10:20:15,754 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 10:20:15,777 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 10:20:15,777 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-13 10:20:15,778 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:20:15 BoogieIcfgContainer [2024-09-13 10:20:15,778 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 10:20:15,779 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 10:20:15,780 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 10:20:15,783 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 10:20:15,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 10:20:15" (1/4) ... [2024-09-13 10:20:15,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c5f537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 10:20:15, skipping insertion in model container [2024-09-13 10:20:15,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:20:15" (2/4) ... [2024-09-13 10:20:15,784 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c5f537 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 10:20:15, skipping insertion in model container [2024-09-13 10:20:15,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:20:15" (3/4) ... [2024-09-13 10:20:15,784 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c5f537 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 10:20:15, skipping insertion in model container [2024-09-13 10:20:15,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:20:15" (4/4) ... [2024-09-13 10:20:15,790 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound5.c [2024-09-13 10:20:15,806 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 10:20:15,806 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-09-13 10:20:15,856 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 10:20:15,866 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;@566ed21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 10:20:15,866 INFO L337 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-09-13 10:20:15,870 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 27 states have internal predecessors, (36), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 10:20:15,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-09-13 10:20:15,876 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:20:15,877 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-09-13 10:20:15,877 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:20:15,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:20:15,884 INFO L85 PathProgramCache]: Analyzing trace with hash 126055, now seen corresponding path program 1 times [2024-09-13 10:20:15,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:20:15,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654329205] [2024-09-13 10:20:15,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:20:15,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:20:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:16,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:20:16,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:20:16,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654329205] [2024-09-13 10:20:16,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654329205] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:20:16,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:20:16,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 10:20:16,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132395836] [2024-09-13 10:20:16,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:20:16,032 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-13 10:20:16,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:20:16,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-13 10:20:16,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 10:20:16,059 INFO L87 Difference]: Start difference. First operand has 36 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 27 states have internal predecessors, (36), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:20:16,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:20:16,093 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-09-13 10:20:16,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-13 10:20:16,096 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2024-09-13 10:20:16,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:20:16,100 INFO L225 Difference]: With dead ends: 36 [2024-09-13 10:20:16,100 INFO L226 Difference]: Without dead ends: 34 [2024-09-13 10:20:16,102 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 10:20:16,105 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:20:16,105 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:20:16,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-13 10:20:16,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-09-13 10:20:16,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 21 states have (on average 1.380952380952381) internal successors, (29), 26 states have internal predecessors, (29), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 10:20:16,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2024-09-13 10:20:16,137 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 3 [2024-09-13 10:20:16,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:20:16,138 INFO L474 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2024-09-13 10:20:16,138 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:20:16,138 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-09-13 10:20:16,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-09-13 10:20:16,139 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:20:16,139 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-09-13 10:20:16,139 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 10:20:16,139 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:20:16,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:20:16,140 INFO L85 PathProgramCache]: Analyzing trace with hash 126117, now seen corresponding path program 1 times [2024-09-13 10:20:16,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:20:16,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867665925] [2024-09-13 10:20:16,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:20:16,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:20:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:16,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:20:16,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:20:16,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867665925] [2024-09-13 10:20:16,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867665925] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:20:16,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:20:16,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 10:20:16,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583584534] [2024-09-13 10:20:16,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:20:16,243 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 10:20:16,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:20:16,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 10:20:16,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-13 10:20:16,248 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:20:16,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:20:16,275 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2024-09-13 10:20:16,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 10:20:16,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2024-09-13 10:20:16,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:20:16,281 INFO L225 Difference]: With dead ends: 33 [2024-09-13 10:20:16,281 INFO L226 Difference]: Without dead ends: 33 [2024-09-13 10:20:16,281 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-13 10:20:16,282 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:20:16,282 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:20:16,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-13 10:20:16,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-09-13 10:20:16,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 25 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 10:20:16,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2024-09-13 10:20:16,288 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 3 [2024-09-13 10:20:16,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:20:16,288 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2024-09-13 10:20:16,288 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:20:16,289 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2024-09-13 10:20:16,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-09-13 10:20:16,289 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:20:16,289 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-09-13 10:20:16,289 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 10:20:16,289 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:20:16,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:20:16,290 INFO L85 PathProgramCache]: Analyzing trace with hash 3909670, now seen corresponding path program 1 times [2024-09-13 10:20:16,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:20:16,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263988486] [2024-09-13 10:20:16,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:20:16,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:20:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:16,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:20:16,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:20:16,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263988486] [2024-09-13 10:20:16,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263988486] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:20:16,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:20:16,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 10:20:16,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766808341] [2024-09-13 10:20:16,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:20:16,622 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 10:20:16,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:20:16,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 10:20:16,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-09-13 10:20:16,624 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 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) [2024-09-13 10:20:16,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:20:16,768 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2024-09-13 10:20:16,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 10:20:16,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 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 [2024-09-13 10:20:16,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:20:16,770 INFO L225 Difference]: With dead ends: 44 [2024-09-13 10:20:16,770 INFO L226 Difference]: Without dead ends: 44 [2024-09-13 10:20:16,770 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-09-13 10:20:16,773 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 42 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:20:16,774 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 41 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:20:16,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-13 10:20:16,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-09-13 10:20:16,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 31 states have internal predecessors, (35), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-13 10:20:16,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2024-09-13 10:20:16,789 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 4 [2024-09-13 10:20:16,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:20:16,789 INFO L474 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2024-09-13 10:20:16,789 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 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) [2024-09-13 10:20:16,789 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2024-09-13 10:20:16,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-13 10:20:16,790 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:20:16,790 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:20:16,790 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-13 10:20:16,791 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:20:16,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:20:16,792 INFO L85 PathProgramCache]: Analyzing trace with hash -559254942, now seen corresponding path program 1 times [2024-09-13 10:20:16,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:20:16,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965329729] [2024-09-13 10:20:16,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:20:16,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:20:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:20:16,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:20:16,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965329729] [2024-09-13 10:20:16,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965329729] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:20:16,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:20:16,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 10:20:16,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734306769] [2024-09-13 10:20:16,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:20:16,847 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 10:20:16,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:20:16,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 10:20:16,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:20:16,848 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:20:16,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:20:16,890 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2024-09-13 10:20:16,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 10:20:16,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-09-13 10:20:16,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:20:16,892 INFO L225 Difference]: With dead ends: 43 [2024-09-13 10:20:16,893 INFO L226 Difference]: Without dead ends: 43 [2024-09-13 10:20:16,894 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:20:16,895 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 3 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:20:16,898 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 52 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:20:16,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-13 10:20:16,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-09-13 10:20:16,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 30 states have internal predecessors, (34), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-13 10:20:16,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2024-09-13 10:20:16,904 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 9 [2024-09-13 10:20:16,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:20:16,905 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2024-09-13 10:20:16,905 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:20:16,906 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2024-09-13 10:20:16,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-13 10:20:16,907 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:20:16,907 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:20:16,907 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-13 10:20:16,907 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:20:16,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:20:16,922 INFO L85 PathProgramCache]: Analyzing trace with hash -559255103, now seen corresponding path program 1 times [2024-09-13 10:20:16,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:20:16,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871216692] [2024-09-13 10:20:16,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:20:16,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:20:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:16,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:20:16,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:20:16,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871216692] [2024-09-13 10:20:16,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871216692] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:20:16,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:20:16,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 10:20:16,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561620888] [2024-09-13 10:20:16,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:20:16,970 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 10:20:16,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:20:16,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 10:20:16,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:20:16,972 INFO L87 Difference]: Start difference. First operand 43 states and 57 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:20:16,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:20:16,986 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2024-09-13 10:20:16,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 10:20:16,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-09-13 10:20:16,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:20:16,988 INFO L225 Difference]: With dead ends: 41 [2024-09-13 10:20:16,988 INFO L226 Difference]: Without dead ends: 41 [2024-09-13 10:20:16,988 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 [2024-09-13 10:20:16,991 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:20:16,992 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:20:16,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-13 10:20:17,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-09-13 10:20:17,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 28 states have internal predecessors, (32), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-13 10:20:17,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 54 transitions. [2024-09-13 10:20:17,004 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 54 transitions. Word has length 9 [2024-09-13 10:20:17,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:20:17,005 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 54 transitions. [2024-09-13 10:20:17,005 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:20:17,005 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 54 transitions. [2024-09-13 10:20:17,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-13 10:20:17,006 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:20:17,006 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:20:17,006 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-13 10:20:17,007 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:20:17,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:20:17,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1484025061, now seen corresponding path program 1 times [2024-09-13 10:20:17,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:20:17,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519505351] [2024-09-13 10:20:17,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:20:17,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:20:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:17,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 10:20:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:17,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 10:20:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:17,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-13 10:20:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:17,388 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 10:20:17,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:20:17,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519505351] [2024-09-13 10:20:17,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519505351] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:20:17,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206072022] [2024-09-13 10:20:17,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:20:17,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:20:17,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:20:17,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:20:17,397 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 10:20:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:17,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-13 10:20:17,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:20:17,682 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 10:20:17,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:20:18,007 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 10:20:18,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206072022] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:20:18,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:20:18,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-09-13 10:20:18,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342151097] [2024-09-13 10:20:18,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:20:18,008 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-13 10:20:18,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:20:18,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-13 10:20:18,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-09-13 10:20:18,009 INFO L87 Difference]: Start difference. First operand 41 states and 54 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-13 10:20:18,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:20:18,209 INFO L93 Difference]: Finished difference Result 70 states and 106 transitions. [2024-09-13 10:20:18,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-13 10:20:18,210 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 22 [2024-09-13 10:20:18,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:20:18,211 INFO L225 Difference]: With dead ends: 70 [2024-09-13 10:20:18,211 INFO L226 Difference]: Without dead ends: 70 [2024-09-13 10:20:18,211 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-09-13 10:20:18,212 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 27 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 10:20:18,212 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 102 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 10:20:18,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-09-13 10:20:18,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 53. [2024-09-13 10:20:18,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 35 states have internal predecessors, (41), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-13 10:20:18,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 73 transitions. [2024-09-13 10:20:18,226 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 73 transitions. Word has length 22 [2024-09-13 10:20:18,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:20:18,247 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 73 transitions. [2024-09-13 10:20:18,247 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-13 10:20:18,247 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 73 transitions. [2024-09-13 10:20:18,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-13 10:20:18,248 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:20:18,248 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:20:18,266 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 10:20:18,449 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-13 10:20:18,449 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:20:18,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:20:18,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1805205026, now seen corresponding path program 1 times [2024-09-13 10:20:18,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:20:18,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561569983] [2024-09-13 10:20:18,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:20:18,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:20:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 10:20:18,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1502516637] [2024-09-13 10:20:18,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:20:18,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:20:18,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:20:18,479 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:20:18,481 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 10:20:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:18,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-13 10:20:18,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:20:18,592 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-13 10:20:18,592 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 10:20:18,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:20:18,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561569983] [2024-09-13 10:20:18,593 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 10:20:18,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502516637] [2024-09-13 10:20:18,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502516637] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:20:18,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:20:18,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 10:20:18,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675421645] [2024-09-13 10:20:18,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:20:18,594 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 10:20:18,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:20:18,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 10:20:18,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:20:18,595 INFO L87 Difference]: Start difference. First operand 53 states and 73 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-13 10:20:18,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:20:18,627 INFO L93 Difference]: Finished difference Result 61 states and 86 transitions. [2024-09-13 10:20:18,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 10:20:18,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 35 [2024-09-13 10:20:18,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:20:18,629 INFO L225 Difference]: With dead ends: 61 [2024-09-13 10:20:18,629 INFO L226 Difference]: Without dead ends: 61 [2024-09-13 10:20:18,629 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:20:18,630 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:20:18,630 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 44 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:20:18,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-09-13 10:20:18,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2024-09-13 10:20:18,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-13 10:20:18,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 85 transitions. [2024-09-13 10:20:18,642 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 85 transitions. Word has length 35 [2024-09-13 10:20:18,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:20:18,642 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 85 transitions. [2024-09-13 10:20:18,642 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-13 10:20:18,642 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 85 transitions. [2024-09-13 10:20:18,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-13 10:20:18,645 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:20:18,645 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-09-13 10:20:18,662 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-13 10:20:18,846 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-13 10:20:18,846 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:20:18,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:20:18,847 INFO L85 PathProgramCache]: Analyzing trace with hash -140304412, now seen corresponding path program 2 times [2024-09-13 10:20:18,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:20:18,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435316208] [2024-09-13 10:20:18,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:20:18,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:20:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:19,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 10:20:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:19,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 10:20:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:19,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-13 10:20:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:19,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 10:20:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:19,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 10:20:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:19,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 10:20:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:19,109 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-13 10:20:19,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:20:19,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435316208] [2024-09-13 10:20:19,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435316208] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:20:19,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512141885] [2024-09-13 10:20:19,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 10:20:19,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:20:19,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:20:19,111 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:20:19,114 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 10:20:19,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 10:20:19,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 10:20:19,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-13 10:20:19,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:20:19,408 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-13 10:20:19,408 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:20:19,858 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-13 10:20:19,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512141885] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:20:19,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:20:19,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-09-13 10:20:19,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183372155] [2024-09-13 10:20:19,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:20:19,860 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-13 10:20:19,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:20:19,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-13 10:20:19,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-09-13 10:20:19,861 INFO L87 Difference]: Start difference. First operand 58 states and 85 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-09-13 10:20:20,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:20:20,271 INFO L93 Difference]: Finished difference Result 99 states and 155 transitions. [2024-09-13 10:20:20,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-13 10:20:20,271 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 40 [2024-09-13 10:20:20,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:20:20,273 INFO L225 Difference]: With dead ends: 99 [2024-09-13 10:20:20,275 INFO L226 Difference]: Without dead ends: 99 [2024-09-13 10:20:20,276 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2024-09-13 10:20:20,276 INFO L434 NwaCegarLoop]: 57 mSDtfsCounter, 39 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 10:20:20,277 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 191 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 10:20:20,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-09-13 10:20:20,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 76. [2024-09-13 10:20:20,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 48 states have internal predecessors, (59), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-13 10:20:20,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 113 transitions. [2024-09-13 10:20:20,292 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 113 transitions. Word has length 40 [2024-09-13 10:20:20,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:20:20,292 INFO L474 AbstractCegarLoop]: Abstraction has 76 states and 113 transitions. [2024-09-13 10:20:20,292 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-09-13 10:20:20,292 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 113 transitions. [2024-09-13 10:20:20,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-13 10:20:20,293 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:20:20,294 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:20:20,311 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-13 10:20:20,494 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-09-13 10:20:20,495 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:20:20,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:20:20,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1181912687, now seen corresponding path program 1 times [2024-09-13 10:20:20,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:20:20,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848096793] [2024-09-13 10:20:20,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:20:20,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:20:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:20,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 10:20:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:20,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 10:20:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:20,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-13 10:20:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:20,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 10:20:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:20,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 10:20:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:20,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-13 10:20:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:20,556 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-13 10:20:20,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:20:20,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848096793] [2024-09-13 10:20:20,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848096793] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:20:20,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:20:20,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 10:20:20,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572194849] [2024-09-13 10:20:20,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:20:20,557 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 10:20:20,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:20:20,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 10:20:20,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:20:20,558 INFO L87 Difference]: Start difference. First operand 76 states and 113 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-09-13 10:20:20,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:20:20,589 INFO L93 Difference]: Finished difference Result 83 states and 122 transitions. [2024-09-13 10:20:20,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 10:20:20,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 40 [2024-09-13 10:20:20,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:20:20,590 INFO L225 Difference]: With dead ends: 83 [2024-09-13 10:20:20,591 INFO L226 Difference]: Without dead ends: 76 [2024-09-13 10:20:20,591 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:20:20,591 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:20:20,592 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:20:20,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-09-13 10:20:20,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-09-13 10:20:20,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 48 states have internal predecessors, (58), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-13 10:20:20,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 112 transitions. [2024-09-13 10:20:20,604 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 112 transitions. Word has length 40 [2024-09-13 10:20:20,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:20:20,604 INFO L474 AbstractCegarLoop]: Abstraction has 76 states and 112 transitions. [2024-09-13 10:20:20,604 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-09-13 10:20:20,605 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 112 transitions. [2024-09-13 10:20:20,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-13 10:20:20,606 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:20:20,606 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:20:20,606 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-09-13 10:20:20,606 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:20:20,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:20:20,606 INFO L85 PathProgramCache]: Analyzing trace with hash -2138076849, now seen corresponding path program 1 times [2024-09-13 10:20:20,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:20:20,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065094936] [2024-09-13 10:20:20,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:20:20,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:20:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:21,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 10:20:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:21,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 10:20:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:21,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-13 10:20:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:21,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 10:20:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:21,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 10:20:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:21,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 10:20:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:21,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-13 10:20:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:21,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-13 10:20:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:21,206 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-13 10:20:21,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:20:21,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065094936] [2024-09-13 10:20:21,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065094936] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:20:21,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504544591] [2024-09-13 10:20:21,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:20:21,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:20:21,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:20:21,211 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:20:21,213 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 10:20:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:21,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-13 10:20:21,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:20:21,612 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-13 10:20:21,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:20:22,103 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-09-13 10:20:22,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504544591] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 10:20:22,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-13 10:20:22,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 6] total 12 [2024-09-13 10:20:22,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453044380] [2024-09-13 10:20:22,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:20:22,104 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 10:20:22,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:20:22,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 10:20:22,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-09-13 10:20:22,105 INFO L87 Difference]: Start difference. First operand 76 states and 112 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-13 10:20:22,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:20:22,136 INFO L93 Difference]: Finished difference Result 72 states and 106 transitions. [2024-09-13 10:20:22,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 10:20:22,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 54 [2024-09-13 10:20:22,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:20:22,137 INFO L225 Difference]: With dead ends: 72 [2024-09-13 10:20:22,137 INFO L226 Difference]: Without dead ends: 72 [2024-09-13 10:20:22,138 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-09-13 10:20:22,138 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:20:22,138 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 30 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:20:22,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-09-13 10:20:22,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-09-13 10:20:22,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 44 states have internal predecessors, (52), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-13 10:20:22,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 106 transitions. [2024-09-13 10:20:22,150 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 106 transitions. Word has length 54 [2024-09-13 10:20:22,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:20:22,150 INFO L474 AbstractCegarLoop]: Abstraction has 72 states and 106 transitions. [2024-09-13 10:20:22,150 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-13 10:20:22,150 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 106 transitions. [2024-09-13 10:20:22,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-09-13 10:20:22,151 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:20:22,151 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2024-09-13 10:20:22,168 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-13 10:20:22,351 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:20:22,352 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:20:22,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:20:22,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1140805341, now seen corresponding path program 3 times [2024-09-13 10:20:22,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:20:22,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6160247] [2024-09-13 10:20:22,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:20:22,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:20:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:22,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 10:20:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:22,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 10:20:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:22,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-13 10:20:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:22,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 10:20:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:22,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 10:20:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:22,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 10:20:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:22,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-13 10:20:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:22,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-13 10:20:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:22,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-13 10:20:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:22,677 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-13 10:20:22,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:20:22,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6160247] [2024-09-13 10:20:22,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6160247] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:20:22,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307676834] [2024-09-13 10:20:22,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 10:20:22,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:20:22,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:20:22,680 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:20:22,683 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 10:20:22,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-13 10:20:22,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 10:20:22,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-13 10:20:22,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:20:23,400 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 36 proven. 3 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-09-13 10:20:23,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:20:24,119 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-09-13 10:20:24,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307676834] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 10:20:24,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-13 10:20:24,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 7] total 16 [2024-09-13 10:20:24,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63057843] [2024-09-13 10:20:24,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:20:24,120 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-13 10:20:24,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:20:24,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-13 10:20:24,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-09-13 10:20:24,121 INFO L87 Difference]: Start difference. First operand 72 states and 106 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-13 10:20:24,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:20:24,289 INFO L93 Difference]: Finished difference Result 91 states and 136 transitions. [2024-09-13 10:20:24,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 10:20:24,290 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 58 [2024-09-13 10:20:24,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:20:24,291 INFO L225 Difference]: With dead ends: 91 [2024-09-13 10:20:24,291 INFO L226 Difference]: Without dead ends: 91 [2024-09-13 10:20:24,291 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-09-13 10:20:24,291 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 18 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 10:20:24,292 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 53 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 10:20:24,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-09-13 10:20:24,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2024-09-13 10:20:24,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 45 states have (on average 1.2) internal successors, (54), 46 states have internal predecessors, (54), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-13 10:20:24,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 112 transitions. [2024-09-13 10:20:24,297 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 112 transitions. Word has length 58 [2024-09-13 10:20:24,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:20:24,297 INFO L474 AbstractCegarLoop]: Abstraction has 76 states and 112 transitions. [2024-09-13 10:20:24,297 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-13 10:20:24,297 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 112 transitions. [2024-09-13 10:20:24,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-09-13 10:20:24,298 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:20:24,298 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:20:24,314 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-13 10:20:24,502 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-13 10:20:24,503 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:20:24,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:20:24,503 INFO L85 PathProgramCache]: Analyzing trace with hash -17133746, now seen corresponding path program 1 times [2024-09-13 10:20:24,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:20:24,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260226010] [2024-09-13 10:20:24,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:20:24,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:20:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 10:20:24,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2010407735] [2024-09-13 10:20:24,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:20:24,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:20:24,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:20:24,526 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:20:24,527 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-13 10:20:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:24,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-13 10:20:24,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:20:24,675 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-09-13 10:20:24,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:20:24,812 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-09-13 10:20:24,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:20:24,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260226010] [2024-09-13 10:20:24,813 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 10:20:24,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010407735] [2024-09-13 10:20:24,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010407735] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:20:24,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 10:20:24,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-09-13 10:20:24,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721749309] [2024-09-13 10:20:24,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 10:20:24,814 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-13 10:20:24,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:20:24,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-13 10:20:24,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-09-13 10:20:24,815 INFO L87 Difference]: Start difference. First operand 76 states and 112 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-13 10:20:24,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:20:24,875 INFO L93 Difference]: Finished difference Result 84 states and 123 transitions. [2024-09-13 10:20:24,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 10:20:24,876 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 67 [2024-09-13 10:20:24,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:20:24,877 INFO L225 Difference]: With dead ends: 84 [2024-09-13 10:20:24,877 INFO L226 Difference]: Without dead ends: 84 [2024-09-13 10:20:24,877 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-09-13 10:20:24,877 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 5 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:20:24,878 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 70 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:20:24,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-09-13 10:20:24,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 68. [2024-09-13 10:20:24,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 40 states have (on average 1.175) internal successors, (47), 40 states have internal predecessors, (47), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-13 10:20:24,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 99 transitions. [2024-09-13 10:20:24,882 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 99 transitions. Word has length 67 [2024-09-13 10:20:24,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:20:24,882 INFO L474 AbstractCegarLoop]: Abstraction has 68 states and 99 transitions. [2024-09-13 10:20:24,882 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-13 10:20:24,882 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 99 transitions. [2024-09-13 10:20:24,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-13 10:20:24,883 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:20:24,883 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:20:24,899 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-13 10:20:25,087 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-13 10:20:25,088 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:20:25,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:20:25,088 INFO L85 PathProgramCache]: Analyzing trace with hash 274048767, now seen corresponding path program 1 times [2024-09-13 10:20:25,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:20:25,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876395629] [2024-09-13 10:20:25,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:20:25,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:20:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:25,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 10:20:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:25,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 10:20:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:25,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-13 10:20:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:25,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 10:20:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:25,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 10:20:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:25,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 10:20:25,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:25,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-13 10:20:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:25,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-13 10:20:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:25,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-13 10:20:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:25,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-13 10:20:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:25,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-13 10:20:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:25,422 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-13 10:20:25,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:20:25,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876395629] [2024-09-13 10:20:25,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876395629] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:20:25,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124958202] [2024-09-13 10:20:25,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:20:25,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:20:25,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:20:25,424 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:20:25,426 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-13 10:20:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:25,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-13 10:20:25,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:20:25,561 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2024-09-13 10:20:25,561 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 10:20:25,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124958202] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:20:25,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 10:20:25,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-09-13 10:20:25,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581469534] [2024-09-13 10:20:25,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:20:25,562 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 10:20:25,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:20:25,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 10:20:25,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-09-13 10:20:25,563 INFO L87 Difference]: Start difference. First operand 68 states and 99 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-13 10:20:25,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:20:25,610 INFO L93 Difference]: Finished difference Result 67 states and 98 transitions. [2024-09-13 10:20:25,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 10:20:25,610 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 72 [2024-09-13 10:20:25,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:20:25,611 INFO L225 Difference]: With dead ends: 67 [2024-09-13 10:20:25,611 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 10:20:25,611 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-09-13 10:20:25,612 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:20:25,612 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 29 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:20:25,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 10:20:25,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 10:20:25,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:20:25,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 10:20:25,612 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 72 [2024-09-13 10:20:25,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:20:25,613 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 10:20:25,613 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-13 10:20:25,613 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 10:20:25,613 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 10:20:25,617 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION (11 of 12 remaining) [2024-09-13 10:20:25,617 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 12 remaining) [2024-09-13 10:20:25,617 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (9 of 12 remaining) [2024-09-13 10:20:25,617 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONPRE_CONDITION (8 of 12 remaining) [2024-09-13 10:20:25,618 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONPRE_CONDITION (7 of 12 remaining) [2024-09-13 10:20:25,618 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 12 remaining) [2024-09-13 10:20:25,618 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONPRE_CONDITION (5 of 12 remaining) [2024-09-13 10:20:25,618 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONPRE_CONDITION (4 of 12 remaining) [2024-09-13 10:20:25,618 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONPRE_CONDITION (3 of 12 remaining) [2024-09-13 10:20:25,618 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONPRE_CONDITION (2 of 12 remaining) [2024-09-13 10:20:25,618 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 12 remaining) [2024-09-13 10:20:25,619 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION (0 of 12 remaining) [2024-09-13 10:20:25,635 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-13 10:20:25,822 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:20:25,825 INFO L408 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:20:25,827 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 10:20:25,829 INFO L469 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-09-13 10:20:25,829 INFO L470 ceAbstractionStarter]: WitnessConsidered=2 [2024-09-13 10:20:25,829 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 10:20:25 BoogieIcfgContainer [2024-09-13 10:20:25,829 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 10:20:25,830 INFO L158 Benchmark]: Toolchain (without parser) took 10774.15ms. Allocated memory was 157.3MB in the beginning and 285.2MB in the end (delta: 127.9MB). Free memory was 124.2MB in the beginning and 193.7MB in the end (delta: -69.6MB). Peak memory consumption was 57.8MB. Max. memory is 16.1GB. [2024-09-13 10:20:25,830 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 157.3MB. Free memory was 127.5MB in the beginning and 127.5MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:20:25,830 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 157.3MB. Free memory is still 126.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:20:25,830 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.90ms. Allocated memory is still 157.3MB. Free memory was 124.2MB in the beginning and 110.1MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-13 10:20:25,831 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.78ms. Allocated memory is still 157.3MB. Free memory was 110.1MB in the beginning and 108.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 10:20:25,831 INFO L158 Benchmark]: Boogie Preprocessor took 34.56ms. Allocated memory is still 157.3MB. Free memory was 108.1MB in the beginning and 106.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:20:25,831 INFO L158 Benchmark]: RCFGBuilder took 353.01ms. Allocated memory is still 157.3MB. Free memory was 106.8MB in the beginning and 116.0MB in the end (delta: -9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-09-13 10:20:25,831 INFO L158 Benchmark]: TraceAbstraction took 10049.95ms. Allocated memory was 157.3MB in the beginning and 285.2MB in the end (delta: 127.9MB). Free memory was 116.0MB in the beginning and 193.7MB in the end (delta: -77.7MB). Peak memory consumption was 51.1MB. Max. memory is 16.1GB. [2024-09-13 10:20:25,832 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 157.3MB. Free memory was 127.5MB in the beginning and 127.5MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.17ms. Allocated memory is still 157.3MB. Free memory is still 126.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 294.90ms. Allocated memory is still 157.3MB. Free memory was 124.2MB in the beginning and 110.1MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.78ms. Allocated memory is still 157.3MB. Free memory was 110.1MB in the beginning and 108.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.56ms. Allocated memory is still 157.3MB. Free memory was 108.1MB in the beginning and 106.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 353.01ms. Allocated memory is still 157.3MB. Free memory was 106.8MB in the beginning and 116.0MB in the end (delta: -9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 10049.95ms. Allocated memory was 157.3MB in the beginning and 285.2MB in the end (delta: 127.9MB). Free memory was 116.0MB in the beginning and 193.7MB in the end (delta: -77.7MB). Peak memory consumption was 51.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 11]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - PositiveResult [Line: 34]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 44]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 14]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 36 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 10.0s, OverallIterations: 13, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 202 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 156 mSDsluCounter, 881 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 477 mSDsCounter, 152 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 739 IncrementalHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 152 mSolverCounterUnsat, 404 mSDtfsCounter, 739 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 712 GetRequests, 640 SyntacticMatches, 4 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=8, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 74 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 764 NumberOfCodeBlocks, 731 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 880 ConstructedInterpolants, 0 QuantifiedInterpolants, 5279 SizeOfPredicates, 9 NumberOfNonLiveVariables, 983 ConjunctsInSsa, 108 ConjunctsInUnsatCore, 23 InterpolantComputations, 10 PerfectInterpolantSequences, 1954/2039 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-13 10:20:25,852 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