./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/egcd3-ll_valuebound2.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 04d6fb36 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReachWitnessValidation.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c ../results/automizer-verification-files/SV-COMP24_unreach-call/egcd3-ll_valuebound2.yml/witness-2.1.yml -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-04d6fb3-m [2024-09-15 20:14:15,155 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 20:14:15,246 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-15 20:14:15,252 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 20:14:15,255 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 20:14:15,285 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 20:14:15,285 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 20:14:15,286 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 20:14:15,286 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 20:14:15,289 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 20:14:15,289 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 20:14:15,290 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 20:14:15,290 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 20:14:15,292 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 20:14:15,292 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 20:14:15,293 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 20:14:15,293 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 20:14:15,293 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 20:14:15,293 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-15 20:14:15,294 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 20:14:15,294 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 20:14:15,297 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 20:14:15,298 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 20:14:15,298 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 20:14:15,298 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 20:14:15,299 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 20:14:15,299 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 20:14:15,299 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 20:14:15,299 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 20:14:15,299 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 20:14:15,300 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 20:14:15,300 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 20:14:15,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:14:15,300 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 20:14:15,300 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 20:14:15,301 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 20:14:15,301 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-15 20:14:15,301 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-15 20:14:15,301 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 20:14:15,302 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 20:14:15,302 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 20:14:15,302 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 20:14:15,302 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-15 20:14:15,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 20:14:15,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 20:14:15,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 20:14:15,627 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-15 20:14:15,627 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-15 20:14:15,629 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/egcd3-ll_valuebound2.yml/witness-2.1.yml [2024-09-15 20:14:15,683 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 20:14:15,684 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 20:14:15,685 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2024-09-15 20:14:17,186 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 20:14:17,387 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 20:14:17,388 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2024-09-15 20:14:17,401 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/7726f3505/1dc61809486347f5a861bb4022d8ec89/FLAG8d4a7c48f [2024-09-15 20:14:17,776 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/7726f3505/1dc61809486347f5a861bb4022d8ec89 [2024-09-15 20:14:17,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 20:14:17,778 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-15 20:14:17,781 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 20:14:17,781 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 20:14:17,787 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 20:14:17,789 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:14:15" (1/2) ... [2024-09-15 20:14:17,790 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@420f2b73 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:14:17, skipping insertion in model container [2024-09-15 20:14:17,790 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:14:15" (1/2) ... [2024-09-15 20:14:17,792 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5f3dc204 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:14:17, skipping insertion in model container [2024-09-15 20:14:17,793 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:14:17" (2/2) ... [2024-09-15 20:14:17,793 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@420f2b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:14:17, skipping insertion in model container [2024-09-15 20:14:17,794 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:14:17" (2/2) ... [2024-09-15 20:14:17,804 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-15 20:14:17,805 INFO L1541 ArrayList]: Loop invariant at [L35-L73] ((((((((((b == 1) && (s == 0)) && (p == 0)) && (r == 1)) && (a == y)) && (x == 1)) && (a == 2)) && (q == 1)) || ((((((((1 <= x) && (y <= 2)) && (b == 0)) && (((((__int128) q * x) + a) + ((__int128) y * s)) == (((__int128) y * r) + ((__int128) p * x)))) && (a == (((__int128) y * r) + ((__int128) p * x)))) && (1 <= a)) && (1 <= y)) && (x <= 2))) || ((((((((((r == 0) && (y <= 2)) && (s == 1)) && (1 <= a)) && (b == y)) && (q == 0)) && (1 <= y)) && (a == x)) && (x <= 2)) && (p == 1))) [2024-09-15 20:14:17,805 INFO L1541 ArrayList]: Loop invariant at [L49-L59] (((((((((((((((y == 2) && (b == 1)) && (s == 0)) && (p == 0)) && (k == 0)) && (r == 1)) && (c == 2)) && (v == 1)) && (x == 1)) && (d == 1)) && (a == 2)) && (q == 1)) || (((((((((((((v == ((__int128) d * b)) && (r == 0)) && (k == 0)) && (v <= c)) && (s == 1)) && (b == y)) && (b <= c)) && (q == 0)) && (1 <= y)) && (a == x)) && (c == x)) && (x <= 2)) && (p == 1))) || (((((((((((((y == 2) && (b == 1)) && (v <= 1)) && (s == 0)) && (p == 0)) && (k == 0)) && (r == 1)) && (c == 2)) && (x == 1)) && ((d % 2) == 0)) && (a == 2)) && (q == 1)) && (d == v))) || ((((((((((((y == 2) && (b == 1)) && (s == 0)) && (p == 0)) && (k == 0)) && (r == 1)) && (c == 2)) && (x == 1)) && (v == 2)) && (d == 2)) && (a == 2)) && (q == 1))) [2024-09-15 20:14:17,805 INFO L1541 ArrayList]: Loop invariant at [L42-L62] ((((((((((((((r == 0) && (s == 1)) && (((__int128) c + 1) <= ((__int128) b * 2))) && (1 <= a)) && (b == y)) && (q == 0)) && (c == 0)) && (a == x)) && ((y + ((__int128) k * y)) == ((__int128) b + x))) && (x <= 2)) && (p == 1)) || ((((((((((b == 1) && (s == 0)) && (p == 0)) && (k == 0)) && (r == 1)) && (a == y)) && (c == 2)) && (x == 1)) && (a == 2)) && (q == 1))) || ((((((((((((r == 0) && (y <= 2)) && (k == 0)) && (s == 1)) && (1 <= a)) && (b == y)) && (q == 0)) && (1 <= y)) && (a == x)) && (c == x)) && (x <= 2)) && (p == 1))) || ((((((((((y == 2) && (b == 1)) && (s == 0)) && (p == 0)) && (r == 1)) && (x == 1)) && (k == 2)) && (a == 2)) && (c == 0)) && (q == 1))) [2024-09-15 20:14:17,805 INFO L1541 ArrayList]: Function contract at [L7]: requires null, ensures (\old(cond) != 0) [2024-09-15 20:14:17,805 INFO L1541 ArrayList]: Function contract at [L10]: requires (1 <= \old(cond)), ensures (1 <= \old(cond)) [2024-09-15 20:14:17,823 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 20:14:17,976 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] [2024-09-15 20:14:18,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:14:18,011 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global Start Parsing Global [2024-09-15 20:14:18,057 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] Start Parsing Local Start Parsing Local Start Parsing Local [2024-09-15 20:14:18,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:14:18,105 INFO L204 MainTranslator]: Completed translation [2024-09-15 20:14:18,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:14:18 WrapperNode [2024-09-15 20:14:18,106 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 20:14:18,107 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-15 20:14:18,107 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-15 20:14:18,108 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-15 20:14:18,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:14:18" (1/1) ... [2024-09-15 20:14:18,128 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:14:18" (1/1) ... [2024-09-15 20:14:18,176 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 83 [2024-09-15 20:14:18,176 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-15 20:14:18,177 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 20:14:18,177 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 20:14:18,177 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 20:14:18,188 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:14:18" (1/1) ... [2024-09-15 20:14:18,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:14:18" (1/1) ... [2024-09-15 20:14:18,192 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:14:18" (1/1) ... [2024-09-15 20:14:18,199 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure assume_abort_if_not is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-15 20:14:18,199 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:14:18" (1/1) ... [2024-09-15 20:14:18,200 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:14:18" (1/1) ... [2024-09-15 20:14:18,211 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:14:18" (1/1) ... [2024-09-15 20:14:18,215 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:14:18" (1/1) ... [2024-09-15 20:14:18,219 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:14:18" (1/1) ... [2024-09-15 20:14:18,220 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:14:18" (1/1) ... [2024-09-15 20:14:18,226 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 20:14:18,226 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 20:14:18,227 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 20:14:18,227 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 20:14:18,227 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:14:18" (1/1) ... [2024-09-15 20:14:18,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:14:18,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:14:18,260 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-15 20:14:18,264 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-15 20:14:18,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 20:14:18,310 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-15 20:14:18,310 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-15 20:14:18,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-15 20:14:18,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 20:14:18,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 20:14:18,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-15 20:14:18,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-15 20:14:18,379 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 20:14:18,381 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 20:14:18,690 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-15 20:14:18,715 INFO L? ?]: Removed 67 outVars from TransFormulas that were not future-live. [2024-09-15 20:14:18,715 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 20:14:18,746 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 20:14:18,747 INFO L318 CfgBuilder]: Removed 3 assume(true) statements. [2024-09-15 20:14:18,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:14:18 BoogieIcfgContainer [2024-09-15 20:14:18,747 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 20:14:18,758 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-15 20:14:18,758 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-15 20:14:18,761 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-15 20:14:18,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:14:15" (1/4) ... [2024-09-15 20:14:18,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74cd9d88 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 15.09 08:14:18, skipping insertion in model container [2024-09-15 20:14:18,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 08:14:17" (2/4) ... [2024-09-15 20:14:18,764 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74cd9d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 08:14:18, skipping insertion in model container [2024-09-15 20:14:18,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:14:18" (3/4) ... [2024-09-15 20:14:18,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74cd9d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 08:14:18, skipping insertion in model container [2024-09-15 20:14:18,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:14:18" (4/4) ... [2024-09-15 20:14:18,767 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound2.c [2024-09-15 20:14:18,783 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-15 20:14:18,783 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2024-09-15 20:14:18,832 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-15 20:14:18,839 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;@2e5be78a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-15 20:14:18,840 INFO L337 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-09-15 20:14:18,843 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 33 states have internal predecessors, (44), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-15 20:14:18,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-15 20:14:18,849 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:14:18,850 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-15 20:14:18,851 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-09-15 20:14:18,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:14:18,859 INFO L85 PathProgramCache]: Analyzing trace with hash 145402025, now seen corresponding path program 1 times [2024-09-15 20:14:18,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:14:18,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347041111] [2024-09-15 20:14:18,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:14:18,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:14:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:18,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:14:18,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:14:18,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347041111] [2024-09-15 20:14:18,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347041111] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:14:18,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:14:18,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 20:14:18,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623771285] [2024-09-15 20:14:18,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:14:19,003 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-15 20:14:19,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:14:19,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-15 20:14:19,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-15 20:14:19,030 INFO L87 Difference]: Start difference. First operand has 45 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 33 states have internal predecessors, (44), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:14:19,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:14:19,058 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2024-09-15 20:14:19,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-15 20:14:19,060 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-09-15 20:14:19,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:14:19,065 INFO L225 Difference]: With dead ends: 45 [2024-09-15 20:14:19,066 INFO L226 Difference]: Without dead ends: 43 [2024-09-15 20:14:19,067 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-15 20:14:19,070 INFO L434 NwaCegarLoop]: 51 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, 51 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:14:19,070 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:14:19,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-15 20:14:19,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-09-15 20:14:19,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 32 states have internal predecessors, (35), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-15 20:14:19,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2024-09-15 20:14:19,108 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 5 [2024-09-15 20:14:19,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:14:19,108 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2024-09-15 20:14:19,109 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:14:19,109 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2024-09-15 20:14:19,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-15 20:14:19,109 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:14:19,109 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-15 20:14:19,110 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-15 20:14:19,110 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-09-15 20:14:19,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:14:19,113 INFO L85 PathProgramCache]: Analyzing trace with hash 145402087, now seen corresponding path program 1 times [2024-09-15 20:14:19,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:14:19,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303004027] [2024-09-15 20:14:19,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:14:19,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:14:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:19,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:14:19,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:14:19,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303004027] [2024-09-15 20:14:19,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303004027] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:14:19,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:14:19,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-15 20:14:19,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569684846] [2024-09-15 20:14:19,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:14:19,203 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-15 20:14:19,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:14:19,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-15 20:14:19,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:14:19,204 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:14:19,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:14:19,254 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2024-09-15 20:14:19,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-15 20:14:19,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-09-15 20:14:19,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:14:19,257 INFO L225 Difference]: With dead ends: 42 [2024-09-15 20:14:19,259 INFO L226 Difference]: Without dead ends: 42 [2024-09-15 20:14:19,259 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:14:19,260 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 1 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:14:19,270 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 119 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:14:19,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-09-15 20:14:19,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-09-15 20:14:19,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 31 states have internal predecessors, (34), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-15 20:14:19,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2024-09-15 20:14:19,281 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 5 [2024-09-15 20:14:19,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:14:19,281 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2024-09-15 20:14:19,282 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:14:19,282 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2024-09-15 20:14:19,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-15 20:14:19,283 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:14:19,283 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:14:19,283 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-15 20:14:19,284 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-09-15 20:14:19,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:14:19,284 INFO L85 PathProgramCache]: Analyzing trace with hash 2138411590, now seen corresponding path program 1 times [2024-09-15 20:14:19,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:14:19,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644357412] [2024-09-15 20:14:19,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:14:19,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:14:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:19,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 20:14:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:19,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-15 20:14:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:19,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-15 20:14:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:19,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-15 20:14:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:19,912 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-15 20:14:19,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:14:19,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644357412] [2024-09-15 20:14:19,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644357412] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:14:19,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:14:19,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-15 20:14:19,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334956570] [2024-09-15 20:14:19,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:14:19,914 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-15 20:14:19,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:14:19,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-15 20:14:19,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-09-15 20:14:19,918 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 9 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-15 20:14:20,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:14:20,173 INFO L93 Difference]: Finished difference Result 57 states and 76 transitions. [2024-09-15 20:14:20,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-15 20:14:20,174 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 24 [2024-09-15 20:14:20,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:14:20,175 INFO L225 Difference]: With dead ends: 57 [2024-09-15 20:14:20,175 INFO L226 Difference]: Without dead ends: 57 [2024-09-15 20:14:20,175 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-09-15 20:14:20,176 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 31 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 20:14:20,176 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 152 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 20:14:20,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-09-15 20:14:20,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2024-09-15 20:14:20,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 41 states have internal predecessors, (50), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-15 20:14:20,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 75 transitions. [2024-09-15 20:14:20,190 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 75 transitions. Word has length 24 [2024-09-15 20:14:20,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:14:20,191 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 75 transitions. [2024-09-15 20:14:20,191 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-15 20:14:20,192 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 75 transitions. [2024-09-15 20:14:20,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-15 20:14:20,192 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:14:20,193 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:14:20,193 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-15 20:14:20,193 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-09-15 20:14:20,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:14:20,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1830175058, now seen corresponding path program 1 times [2024-09-15 20:14:20,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:14:20,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405748980] [2024-09-15 20:14:20,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:14:20,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:14:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:20,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 20:14:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:20,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-15 20:14:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:20,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-15 20:14:20,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:20,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-15 20:14:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:20,602 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-15 20:14:20,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:14:20,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405748980] [2024-09-15 20:14:20,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405748980] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:14:20,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:14:20,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-15 20:14:20,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295904480] [2024-09-15 20:14:20,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:14:20,607 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 20:14:20,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:14:20,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 20:14:20,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-15 20:14:20,608 INFO L87 Difference]: Start difference. First operand 56 states and 75 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-15 20:14:20,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:14:20,750 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2024-09-15 20:14:20,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 20:14:20,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 27 [2024-09-15 20:14:20,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:14:20,753 INFO L225 Difference]: With dead ends: 62 [2024-09-15 20:14:20,753 INFO L226 Difference]: Without dead ends: 62 [2024-09-15 20:14:20,753 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-09-15 20:14:20,754 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 29 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:14:20,755 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 101 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:14:20,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-09-15 20:14:20,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2024-09-15 20:14:20,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 42 states have internal predecessors, (50), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-15 20:14:20,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 75 transitions. [2024-09-15 20:14:20,766 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 75 transitions. Word has length 27 [2024-09-15 20:14:20,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:14:20,766 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 75 transitions. [2024-09-15 20:14:20,767 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-15 20:14:20,767 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 75 transitions. [2024-09-15 20:14:20,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-15 20:14:20,769 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:14:20,769 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:14:20,770 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-15 20:14:20,770 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-09-15 20:14:20,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:14:20,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1864734550, now seen corresponding path program 1 times [2024-09-15 20:14:20,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:14:20,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647167488] [2024-09-15 20:14:20,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:14:20,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:14:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 20:14:20,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422063032] [2024-09-15 20:14:20,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:14:20,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:14:20,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:14:20,815 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:14:20,817 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-15 20:14:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:20,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-15 20:14:20,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:14:21,311 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-15 20:14:21,312 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-15 20:14:21,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:14:21,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647167488] [2024-09-15 20:14:21,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 20:14:21,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422063032] [2024-09-15 20:14:21,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422063032] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:14:21,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:14:21,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-15 20:14:21,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777489246] [2024-09-15 20:14:21,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:14:21,314 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-15 20:14:21,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:14:21,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-15 20:14:21,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-09-15 20:14:21,318 INFO L87 Difference]: Start difference. First operand 57 states and 75 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-15 20:14:21,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:14:21,481 INFO L93 Difference]: Finished difference Result 70 states and 95 transitions. [2024-09-15 20:14:21,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-15 20:14:21,482 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2024-09-15 20:14:21,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:14:21,483 INFO L225 Difference]: With dead ends: 70 [2024-09-15 20:14:21,483 INFO L226 Difference]: Without dead ends: 70 [2024-09-15 20:14:21,483 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-09-15 20:14:21,484 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 24 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 20:14:21,484 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 101 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 20:14:21,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-09-15 20:14:21,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2024-09-15 20:14:21,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 47 states have internal predecessors, (55), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-15 20:14:21,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 88 transitions. [2024-09-15 20:14:21,496 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 88 transitions. Word has length 30 [2024-09-15 20:14:21,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:14:21,497 INFO L474 AbstractCegarLoop]: Abstraction has 65 states and 88 transitions. [2024-09-15 20:14:21,497 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-15 20:14:21,497 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 88 transitions. [2024-09-15 20:14:21,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-15 20:14:21,498 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:14:21,498 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:14:21,519 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-15 20:14:21,701 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:14:21,702 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-09-15 20:14:21,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:14:21,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1972195220, now seen corresponding path program 1 times [2024-09-15 20:14:21,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:14:21,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139005857] [2024-09-15 20:14:21,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:14:21,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:14:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 20:14:21,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [555201652] [2024-09-15 20:14:21,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:14:21,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:14:21,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:14:21,728 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:14:21,730 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-15 20:14:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:21,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-15 20:14:21,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:14:22,187 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-15 20:14:22,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:14:22,565 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-15 20:14:22,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:14:22,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139005857] [2024-09-15 20:14:22,565 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 20:14:22,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555201652] [2024-09-15 20:14:22,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555201652] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-15 20:14:22,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-15 20:14:22,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-09-15 20:14:22,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436639810] [2024-09-15 20:14:22,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:14:22,566 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-15 20:14:22,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:14:22,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-15 20:14:22,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-09-15 20:14:22,567 INFO L87 Difference]: Start difference. First operand 65 states and 88 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-15 20:14:22,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:14:22,870 INFO L93 Difference]: Finished difference Result 87 states and 123 transitions. [2024-09-15 20:14:22,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-15 20:14:22,871 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 31 [2024-09-15 20:14:22,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:14:22,873 INFO L225 Difference]: With dead ends: 87 [2024-09-15 20:14:22,873 INFO L226 Difference]: Without dead ends: 87 [2024-09-15 20:14:22,874 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-09-15 20:14:22,874 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 34 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 20:14:22,875 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 157 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 20:14:22,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-09-15 20:14:22,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2024-09-15 20:14:22,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 61 states have (on average 1.3278688524590163) internal successors, (81), 64 states have internal predecessors, (81), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-15 20:14:22,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 122 transitions. [2024-09-15 20:14:22,882 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 122 transitions. Word has length 31 [2024-09-15 20:14:22,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:14:22,882 INFO L474 AbstractCegarLoop]: Abstraction has 86 states and 122 transitions. [2024-09-15 20:14:22,882 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-15 20:14:22,882 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 122 transitions. [2024-09-15 20:14:22,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-15 20:14:22,883 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:14:22,883 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:14:22,899 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-15 20:14:23,087 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-15 20:14:23,088 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-09-15 20:14:23,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:14:23,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1484761440, now seen corresponding path program 1 times [2024-09-15 20:14:23,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:14:23,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388255194] [2024-09-15 20:14:23,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:14:23,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:14:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:23,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 20:14:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:23,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-15 20:14:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:23,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-15 20:14:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:23,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-15 20:14:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:23,467 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-15 20:14:23,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:14:23,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388255194] [2024-09-15 20:14:23,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388255194] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:14:23,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405309549] [2024-09-15 20:14:23,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:14:23,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:14:23,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:14:23,470 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:14:23,472 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-15 20:14:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:23,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-15 20:14:23,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:14:24,051 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-15 20:14:24,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:14:24,394 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-15 20:14:24,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405309549] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-15 20:14:24,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-15 20:14:24,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 8] total 15 [2024-09-15 20:14:24,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143942332] [2024-09-15 20:14:24,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:14:24,395 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-15 20:14:24,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:14:24,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-15 20:14:24,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2024-09-15 20:14:24,396 INFO L87 Difference]: Start difference. First operand 86 states and 122 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-15 20:14:24,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:14:24,758 INFO L93 Difference]: Finished difference Result 109 states and 156 transitions. [2024-09-15 20:14:24,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-15 20:14:24,759 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 34 [2024-09-15 20:14:24,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:14:24,760 INFO L225 Difference]: With dead ends: 109 [2024-09-15 20:14:24,760 INFO L226 Difference]: Without dead ends: 109 [2024-09-15 20:14:24,760 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2024-09-15 20:14:24,761 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 72 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 20:14:24,762 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 141 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 20:14:24,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-09-15 20:14:24,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 90. [2024-09-15 20:14:24,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 64 states have (on average 1.328125) internal successors, (85), 68 states have internal predecessors, (85), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-15 20:14:24,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 126 transitions. [2024-09-15 20:14:24,769 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 126 transitions. Word has length 34 [2024-09-15 20:14:24,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:14:24,770 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 126 transitions. [2024-09-15 20:14:24,770 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-15 20:14:24,770 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 126 transitions. [2024-09-15 20:14:24,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-15 20:14:24,771 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:14:24,771 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:14:24,788 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-15 20:14:24,975 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-15 20:14:24,976 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-09-15 20:14:24,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:14:24,976 INFO L85 PathProgramCache]: Analyzing trace with hash -2093358836, now seen corresponding path program 1 times [2024-09-15 20:14:24,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:14:24,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921793862] [2024-09-15 20:14:24,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:14:24,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:14:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:25,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 20:14:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:25,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-15 20:14:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:25,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-15 20:14:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:25,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-15 20:14:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:25,015 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-15 20:14:25,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:14:25,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921793862] [2024-09-15 20:14:25,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921793862] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:14:25,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:14:25,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 20:14:25,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526989937] [2024-09-15 20:14:25,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:14:25,016 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:14:25,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:14:25,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:14:25,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:14:25,017 INFO L87 Difference]: Start difference. First operand 90 states and 126 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-15 20:14:25,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:14:25,035 INFO L93 Difference]: Finished difference Result 89 states and 125 transitions. [2024-09-15 20:14:25,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:14:25,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 35 [2024-09-15 20:14:25,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:14:25,037 INFO L225 Difference]: With dead ends: 89 [2024-09-15 20:14:25,037 INFO L226 Difference]: Without dead ends: 89 [2024-09-15 20:14:25,037 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:14:25,038 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 3 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:14:25,038 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 78 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:14:25,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-09-15 20:14:25,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-09-15 20:14:25,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 64 states have (on average 1.3125) internal successors, (84), 67 states have internal predecessors, (84), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-15 20:14:25,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 125 transitions. [2024-09-15 20:14:25,044 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 125 transitions. Word has length 35 [2024-09-15 20:14:25,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:14:25,044 INFO L474 AbstractCegarLoop]: Abstraction has 89 states and 125 transitions. [2024-09-15 20:14:25,044 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-15 20:14:25,044 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 125 transitions. [2024-09-15 20:14:25,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-15 20:14:25,045 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:14:25,045 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:14:25,045 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-09-15 20:14:25,046 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-09-15 20:14:25,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:14:25,046 INFO L85 PathProgramCache]: Analyzing trace with hash -2093358997, now seen corresponding path program 1 times [2024-09-15 20:14:25,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:14:25,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118678105] [2024-09-15 20:14:25,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:14:25,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:14:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:25,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 20:14:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:25,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-15 20:14:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:25,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-15 20:14:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:25,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-15 20:14:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:25,128 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-15 20:14:25,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:14:25,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118678105] [2024-09-15 20:14:25,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118678105] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:14:25,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:14:25,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-15 20:14:25,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806261141] [2024-09-15 20:14:25,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:14:25,129 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:14:25,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:14:25,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:14:25,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:14:25,130 INFO L87 Difference]: Start difference. First operand 89 states and 125 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-15 20:14:25,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:14:25,137 INFO L93 Difference]: Finished difference Result 87 states and 123 transitions. [2024-09-15 20:14:25,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:14:25,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 35 [2024-09-15 20:14:25,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:14:25,140 INFO L225 Difference]: With dead ends: 87 [2024-09-15 20:14:25,140 INFO L226 Difference]: Without dead ends: 87 [2024-09-15 20:14:25,140 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:14:25,140 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:14:25,141 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:14:25,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-09-15 20:14:25,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-09-15 20:14:25,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 63 states have (on average 1.3015873015873016) internal successors, (82), 65 states have internal predecessors, (82), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-15 20:14:25,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 122 transitions. [2024-09-15 20:14:25,153 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 122 transitions. Word has length 35 [2024-09-15 20:14:25,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:14:25,153 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 122 transitions. [2024-09-15 20:14:25,153 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-15 20:14:25,153 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 122 transitions. [2024-09-15 20:14:25,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-15 20:14:25,154 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:14:25,155 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:14:25,155 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-09-15 20:14:25,155 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-09-15 20:14:25,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:14:25,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1340187172, now seen corresponding path program 1 times [2024-09-15 20:14:25,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:14:25,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5334059] [2024-09-15 20:14:25,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:14:25,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:14:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:25,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 20:14:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:25,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-15 20:14:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:25,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-15 20:14:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:25,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-15 20:14:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:25,736 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-15 20:14:25,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:14:25,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5334059] [2024-09-15 20:14:25,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5334059] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:14:25,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109263594] [2024-09-15 20:14:25,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:14:25,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:14:25,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:14:25,739 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:14:25,743 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-15 20:14:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:25,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-15 20:14:25,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:14:26,317 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-15 20:14:26,318 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:14:27,080 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-15 20:14:27,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109263594] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:14:27,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:14:27,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2024-09-15 20:14:27,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311896569] [2024-09-15 20:14:27,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:14:27,081 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-15 20:14:27,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:14:27,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-15 20:14:27,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2024-09-15 20:14:27,083 INFO L87 Difference]: Start difference. First operand 87 states and 122 transitions. Second operand has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 24 states have internal predecessors, (44), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-15 20:14:27,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:14:27,777 INFO L93 Difference]: Finished difference Result 103 states and 146 transitions. [2024-09-15 20:14:27,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-15 20:14:27,778 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 24 states have internal predecessors, (44), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 37 [2024-09-15 20:14:27,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:14:27,779 INFO L225 Difference]: With dead ends: 103 [2024-09-15 20:14:27,779 INFO L226 Difference]: Without dead ends: 103 [2024-09-15 20:14:27,779 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=279, Invalid=911, Unknown=0, NotChecked=0, Total=1190 [2024-09-15 20:14:27,780 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 111 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-15 20:14:27,780 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 191 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-15 20:14:27,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-09-15 20:14:27,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 62. [2024-09-15 20:14:27,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 40 states have (on average 1.175) internal successors, (47), 44 states have internal predecessors, (47), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-15 20:14:27,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2024-09-15 20:14:27,786 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 37 [2024-09-15 20:14:27,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:14:27,786 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2024-09-15 20:14:27,786 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 24 states have internal predecessors, (44), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-15 20:14:27,786 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2024-09-15 20:14:27,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-09-15 20:14:27,787 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:14:27,788 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:14:27,802 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-15 20:14:27,991 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 [2024-09-15 20:14:27,992 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-09-15 20:14:27,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:14:27,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1785780946, now seen corresponding path program 1 times [2024-09-15 20:14:27,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:14:27,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496966535] [2024-09-15 20:14:27,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:14:27,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:14:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 20:14:28,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2052436136] [2024-09-15 20:14:28,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:14:28,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:14:28,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:14:28,014 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:14:28,016 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-15 20:14:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:28,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-15 20:14:28,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:14:28,639 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-09-15 20:14:28,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:14:29,322 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-09-15 20:14:29,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:14:29,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496966535] [2024-09-15 20:14:29,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 20:14:29,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052436136] [2024-09-15 20:14:29,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052436136] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-15 20:14:29,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-15 20:14:29,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-09-15 20:14:29,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14213435] [2024-09-15 20:14:29,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:14:29,323 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-15 20:14:29,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:14:29,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-15 20:14:29,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=87, Unknown=0, NotChecked=0, Total=156 [2024-09-15 20:14:29,324 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 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) [2024-09-15 20:14:29,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:14:29,428 INFO L93 Difference]: Finished difference Result 75 states and 100 transitions. [2024-09-15 20:14:29,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-15 20:14:29,428 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 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 53 [2024-09-15 20:14:29,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:14:29,431 INFO L225 Difference]: With dead ends: 75 [2024-09-15 20:14:29,431 INFO L226 Difference]: Without dead ends: 75 [2024-09-15 20:14:29,431 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=87, Unknown=0, NotChecked=0, Total=156 [2024-09-15 20:14:29,432 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 9 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:14:29,432 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 104 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:14:29,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-09-15 20:14:29,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 68. [2024-09-15 20:14:29,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 49 states have internal predecessors, (57), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-15 20:14:29,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 89 transitions. [2024-09-15 20:14:29,441 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 89 transitions. Word has length 53 [2024-09-15 20:14:29,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:14:29,442 INFO L474 AbstractCegarLoop]: Abstraction has 68 states and 89 transitions. [2024-09-15 20:14:29,442 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 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) [2024-09-15 20:14:29,442 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 89 transitions. [2024-09-15 20:14:29,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-15 20:14:29,449 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:14:29,450 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:14:29,466 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-15 20:14:29,650 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 [2024-09-15 20:14:29,650 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-09-15 20:14:29,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:14:29,651 INFO L85 PathProgramCache]: Analyzing trace with hash 475364432, now seen corresponding path program 1 times [2024-09-15 20:14:29,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:14:29,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954941181] [2024-09-15 20:14:29,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:14:29,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:14:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 20:14:29,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1739342258] [2024-09-15 20:14:29,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:14:29,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:14:29,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:14:29,669 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:14:29,671 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-15 20:14:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:29,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-15 20:14:29,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:14:30,275 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-09-15 20:14:30,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:14:35,254 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-09-15 20:14:35,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:14:35,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954941181] [2024-09-15 20:14:35,254 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 20:14:35,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739342258] [2024-09-15 20:14:35,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739342258] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-15 20:14:35,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-15 20:14:35,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-09-15 20:14:35,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98260039] [2024-09-15 20:14:35,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:14:35,255 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-15 20:14:35,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:14:35,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-15 20:14:35,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=100, Unknown=1, NotChecked=0, Total=156 [2024-09-15 20:14:35,256 INFO L87 Difference]: Start difference. First operand 68 states and 89 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 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) [2024-09-15 20:14:42,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:14:42,590 INFO L93 Difference]: Finished difference Result 94 states and 129 transitions. [2024-09-15 20:14:42,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-15 20:14:42,590 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 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 [2024-09-15 20:14:42,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:14:42,591 INFO L225 Difference]: With dead ends: 94 [2024-09-15 20:14:42,591 INFO L226 Difference]: Without dead ends: 94 [2024-09-15 20:14:42,592 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=82, Invalid=156, Unknown=2, NotChecked=0, Total=240 [2024-09-15 20:14:42,592 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 29 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-15 20:14:42,592 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 112 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-15 20:14:42,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-09-15 20:14:42,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 86. [2024-09-15 20:14:42,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 59 states have internal predecessors, (71), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-15 20:14:42,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 119 transitions. [2024-09-15 20:14:42,598 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 119 transitions. Word has length 54 [2024-09-15 20:14:42,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:14:42,598 INFO L474 AbstractCegarLoop]: Abstraction has 86 states and 119 transitions. [2024-09-15 20:14:42,598 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 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) [2024-09-15 20:14:42,598 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 119 transitions. [2024-09-15 20:14:42,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-09-15 20:14:42,599 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:14:42,599 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:14:42,616 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-15 20:14:42,803 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 [2024-09-15 20:14:42,804 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-09-15 20:14:42,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:14:42,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1044550602, now seen corresponding path program 1 times [2024-09-15 20:14:42,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:14:42,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526191047] [2024-09-15 20:14:42,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:14:42,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:14:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 20:14:42,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1153007086] [2024-09-15 20:14:42,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:14:42,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:14:42,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:14:42,845 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:14:42,848 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-15 20:14:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:42,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-15 20:14:42,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:14:43,564 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-09-15 20:14:43,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:14:44,802 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-09-15 20:14:44,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:14:44,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526191047] [2024-09-15 20:14:44,803 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 20:14:44,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153007086] [2024-09-15 20:14:44,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153007086] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:14:44,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-15 20:14:44,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 15 [2024-09-15 20:14:44,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473543225] [2024-09-15 20:14:44,803 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-15 20:14:44,804 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-15 20:14:44,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:14:44,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-15 20:14:44,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2024-09-15 20:14:44,805 INFO L87 Difference]: Start difference. First operand 86 states and 119 transitions. Second operand has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 states have internal predecessors, (40), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-09-15 20:14:45,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:14:45,451 INFO L93 Difference]: Finished difference Result 82 states and 104 transitions. [2024-09-15 20:14:45,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-15 20:14:45,451 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 states have internal predecessors, (40), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 58 [2024-09-15 20:14:45,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:14:45,452 INFO L225 Difference]: With dead ends: 82 [2024-09-15 20:14:45,452 INFO L226 Difference]: Without dead ends: 82 [2024-09-15 20:14:45,452 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2024-09-15 20:14:45,453 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 49 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-15 20:14:45,453 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 183 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-15 20:14:45,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-09-15 20:14:45,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 71. [2024-09-15 20:14:45,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 48 states have internal predecessors, (52), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-15 20:14:45,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 92 transitions. [2024-09-15 20:14:45,461 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 92 transitions. Word has length 58 [2024-09-15 20:14:45,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:14:45,461 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 92 transitions. [2024-09-15 20:14:45,461 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 states have internal predecessors, (40), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-09-15 20:14:45,461 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 92 transitions. [2024-09-15 20:14:45,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-15 20:14:45,462 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:14:45,463 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:14:45,480 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-15 20:14:45,663 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 [2024-09-15 20:14:45,663 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-09-15 20:14:45,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:14:45,664 INFO L85 PathProgramCache]: Analyzing trace with hash 2049495712, now seen corresponding path program 1 times [2024-09-15 20:14:45,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:14:45,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687805595] [2024-09-15 20:14:45,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:14:45,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:14:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:46,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 20:14:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:46,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-15 20:14:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:46,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-15 20:14:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:46,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-15 20:14:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:46,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 20:14:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:46,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-15 20:14:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:46,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-15 20:14:46,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:46,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-15 20:14:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:46,428 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-09-15 20:14:46,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:14:46,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687805595] [2024-09-15 20:14:46,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687805595] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:14:46,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211608095] [2024-09-15 20:14:46,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:14:46,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:14:46,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:14:46,431 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:14:46,432 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-15 20:14:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:46,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-15 20:14:46,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:14:46,978 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-09-15 20:14:46,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:14:47,764 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-09-15 20:14:47,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211608095] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:14:47,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:14:47,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 23 [2024-09-15 20:14:47,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311049454] [2024-09-15 20:14:47,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:14:47,765 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-15 20:14:47,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:14:47,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-15 20:14:47,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2024-09-15 20:14:47,766 INFO L87 Difference]: Start difference. First operand 71 states and 92 transitions. Second operand has 24 states, 23 states have (on average 2.130434782608696) internal successors, (49), 24 states have internal predecessors, (49), 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) [2024-09-15 20:14:48,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:14:48,211 INFO L93 Difference]: Finished difference Result 78 states and 99 transitions. [2024-09-15 20:14:48,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-15 20:14:48,211 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.130434782608696) internal successors, (49), 24 states have internal predecessors, (49), 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 60 [2024-09-15 20:14:48,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:14:48,212 INFO L225 Difference]: With dead ends: 78 [2024-09-15 20:14:48,212 INFO L226 Difference]: Without dead ends: 78 [2024-09-15 20:14:48,213 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=242, Invalid=750, Unknown=0, NotChecked=0, Total=992 [2024-09-15 20:14:48,213 INFO L434 NwaCegarLoop]: 48 mSDtfsCounter, 67 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 20:14:48,214 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 223 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 20:14:48,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-09-15 20:14:48,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2024-09-15 20:14:48,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 46 states have internal predecessors, (49), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-15 20:14:48,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2024-09-15 20:14:48,218 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 60 [2024-09-15 20:14:48,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:14:48,218 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2024-09-15 20:14:48,218 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.130434782608696) internal successors, (49), 24 states have internal predecessors, (49), 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) [2024-09-15 20:14:48,218 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2024-09-15 20:14:48,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-15 20:14:48,219 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:14:48,219 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:14:48,239 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-15 20:14:48,427 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:14:48,428 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-09-15 20:14:48,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:14:48,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1168875853, now seen corresponding path program 1 times [2024-09-15 20:14:48,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:14:48,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522926533] [2024-09-15 20:14:48,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:14:48,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:14:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:48,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 20:14:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:48,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-15 20:14:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:48,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-15 20:14:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:48,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-15 20:14:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:48,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-15 20:14:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:48,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-15 20:14:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:48,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 20:14:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:48,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-15 20:14:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:48,559 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-09-15 20:14:48,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:14:48,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522926533] [2024-09-15 20:14:48,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522926533] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:14:48,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4142630] [2024-09-15 20:14:48,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:14:48,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:14:48,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:14:48,561 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:14:48,563 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-15 20:14:48,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:48,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-15 20:14:48,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:14:49,237 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-09-15 20:14:49,238 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:14:49,293 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-09-15 20:14:49,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4142630] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-15 20:14:49,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-15 20:14:49,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 10 [2024-09-15 20:14:49,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320737148] [2024-09-15 20:14:49,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:14:49,294 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-15 20:14:49,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:14:49,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-15 20:14:49,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-09-15 20:14:49,295 INFO L87 Difference]: Start difference. First operand 69 states and 89 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-09-15 20:14:49,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:14:49,333 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2024-09-15 20:14:49,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-15 20:14:49,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 61 [2024-09-15 20:14:49,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:14:49,334 INFO L225 Difference]: With dead ends: 68 [2024-09-15 20:14:49,334 INFO L226 Difference]: Without dead ends: 59 [2024-09-15 20:14:49,334 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-09-15 20:14:49,335 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 10 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:14:49,335 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 52 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:14:49,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-15 20:14:49,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-09-15 20:14:49,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-15 20:14:49,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 78 transitions. [2024-09-15 20:14:49,339 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 78 transitions. Word has length 61 [2024-09-15 20:14:49,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:14:49,339 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 78 transitions. [2024-09-15 20:14:49,339 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-09-15 20:14:49,339 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 78 transitions. [2024-09-15 20:14:49,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-09-15 20:14:49,340 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:14:49,340 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:14:49,358 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-15 20:14:49,541 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-15 20:14:49,541 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-09-15 20:14:49,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:14:49,541 INFO L85 PathProgramCache]: Analyzing trace with hash -85392856, now seen corresponding path program 1 times [2024-09-15 20:14:49,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:14:49,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563393746] [2024-09-15 20:14:49,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:14:49,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:14:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 20:14:49,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [953150220] [2024-09-15 20:14:49,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:14:49,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:14:49,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:14:49,566 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:14:49,567 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-15 20:14:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:49,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-15 20:14:49,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:14:50,438 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-09-15 20:14:50,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:14:56,209 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-09-15 20:14:56,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:14:56,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563393746] [2024-09-15 20:14:56,210 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 20:14:56,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953150220] [2024-09-15 20:14:56,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953150220] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:14:56,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-15 20:14:56,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2024-09-15 20:14:56,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009568518] [2024-09-15 20:14:56,210 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-15 20:14:56,210 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-15 20:14:56,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:14:56,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-15 20:14:56,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=138, Unknown=1, NotChecked=0, Total=210 [2024-09-15 20:14:56,211 INFO L87 Difference]: Start difference. First operand 59 states and 78 transitions. Second operand has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 5 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2024-09-15 20:14:56,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:14:56,457 INFO L93 Difference]: Finished difference Result 61 states and 78 transitions. [2024-09-15 20:14:56,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-15 20:14:56,457 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 5 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) Word has length 77 [2024-09-15 20:14:56,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:14:56,458 INFO L225 Difference]: With dead ends: 61 [2024-09-15 20:14:56,458 INFO L226 Difference]: Without dead ends: 45 [2024-09-15 20:14:56,458 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=94, Invalid=177, Unknown=1, NotChecked=0, Total=272 [2024-09-15 20:14:56,459 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 3 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:14:56,459 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 217 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:14:56,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-15 20:14:56,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-09-15 20:14:56,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.0) internal successors, (30), 30 states have internal predecessors, (30), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-15 20:14:56,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2024-09-15 20:14:56,464 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 77 [2024-09-15 20:14:56,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:14:56,464 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2024-09-15 20:14:56,465 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 5 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2024-09-15 20:14:56,465 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2024-09-15 20:14:56,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-09-15 20:14:56,466 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:14:56,466 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:14:56,483 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-15 20:14:56,666 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-15 20:14:56,667 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-09-15 20:14:56,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:14:56,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1712191898, now seen corresponding path program 1 times [2024-09-15 20:14:56,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:14:56,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25407967] [2024-09-15 20:14:56,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:14:56,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:14:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:57,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 20:14:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:57,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-15 20:14:57,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:57,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-15 20:14:57,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:57,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-15 20:14:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:57,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 20:14:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:57,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-15 20:14:57,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:57,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-15 20:14:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:57,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-15 20:14:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:57,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-15 20:14:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:57,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-15 20:14:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:57,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-15 20:14:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:57,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-15 20:14:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:57,671 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-09-15 20:14:57,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:14:57,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25407967] [2024-09-15 20:14:57,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25407967] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:14:57,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102451952] [2024-09-15 20:14:57,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:14:57,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:14:57,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:14:57,674 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:14:57,675 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-15 20:14:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:14:57,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-15 20:14:57,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:14:58,538 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-09-15 20:14:58,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:14:59,451 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-09-15 20:14:59,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102451952] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:14:59,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:14:59,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 30 [2024-09-15 20:14:59,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225174685] [2024-09-15 20:14:59,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:14:59,453 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-15 20:14:59,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:14:59,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-15 20:14:59,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=744, Unknown=0, NotChecked=0, Total=930 [2024-09-15 20:14:59,454 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 31 states, 30 states have (on average 2.4) internal successors, (72), 31 states have internal predecessors, (72), 7 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 7 states have call predecessors, (28), 7 states have call successors, (28) [2024-09-15 20:14:59,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:14:59,803 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2024-09-15 20:14:59,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-15 20:14:59,804 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.4) internal successors, (72), 31 states have internal predecessors, (72), 7 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 7 states have call predecessors, (28), 7 states have call successors, (28) Word has length 84 [2024-09-15 20:14:59,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:14:59,804 INFO L225 Difference]: With dead ends: 44 [2024-09-15 20:14:59,804 INFO L226 Difference]: Without dead ends: 0 [2024-09-15 20:14:59,805 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=250, Invalid=1010, Unknown=0, NotChecked=0, Total=1260 [2024-09-15 20:14:59,805 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 17 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 20:14:59,805 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 355 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 20:14:59,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-15 20:14:59,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-15 20:14:59,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:14:59,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-15 20:14:59,806 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 84 [2024-09-15 20:14:59,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:14:59,806 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-15 20:14:59,806 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.4) internal successors, (72), 31 states have internal predecessors, (72), 7 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 7 states have call predecessors, (28), 7 states have call successors, (28) [2024-09-15 20:14:59,807 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-15 20:14:59,807 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-15 20:14:59,809 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 11 remaining) [2024-09-15 20:14:59,810 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 11 remaining) [2024-09-15 20:14:59,810 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 11 remaining) [2024-09-15 20:14:59,810 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONPRE_CONDITION (7 of 11 remaining) [2024-09-15 20:14:59,810 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONPRE_CONDITION (6 of 11 remaining) [2024-09-15 20:14:59,810 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONPRE_CONDITION (5 of 11 remaining) [2024-09-15 20:14:59,811 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONPRE_CONDITION (4 of 11 remaining) [2024-09-15 20:14:59,811 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONPRE_CONDITION (3 of 11 remaining) [2024-09-15 20:14:59,811 INFO L785 garLoopResultBuilder]: Registering result SAFE for location assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION (2 of 11 remaining) [2024-09-15 20:14:59,811 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 11 remaining) [2024-09-15 20:14:59,811 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION (0 of 11 remaining) [2024-09-15 20:14:59,826 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-15 20:15:00,015 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-15 20:15:00,018 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:15:00,019 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-15 20:15:00,021 INFO L469 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-09-15 20:15:00,021 INFO L470 ceAbstractionStarter]: WitnessConsidered=3 [2024-09-15 20:15:00,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 08:15:00 BoogieIcfgContainer [2024-09-15 20:15:00,022 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-15 20:15:00,022 INFO L158 Benchmark]: Toolchain (without parser) took 42243.74ms. Allocated memory was 60.8MB in the beginning and 197.1MB in the end (delta: 136.3MB). Free memory was 35.5MB in the beginning and 111.4MB in the end (delta: -76.0MB). Peak memory consumption was 58.6MB. Max. memory is 16.1GB. [2024-09-15 20:15:00,022 INFO L158 Benchmark]: Witness Parser took 0.19ms. Allocated memory is still 60.8MB. Free memory was 37.9MB in the beginning and 37.8MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:15:00,022 INFO L158 Benchmark]: CDTParser took 1.03ms. Allocated memory is still 60.8MB. Free memory was 35.7MB in the beginning and 35.6MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:15:00,023 INFO L158 Benchmark]: CACSL2BoogieTranslator took 325.62ms. Allocated memory was 60.8MB in the beginning and 77.6MB in the end (delta: 16.8MB). Free memory was 35.3MB in the beginning and 54.8MB in the end (delta: -19.5MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2024-09-15 20:15:00,023 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.99ms. Allocated memory is still 77.6MB. Free memory was 54.8MB in the beginning and 52.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 20:15:00,023 INFO L158 Benchmark]: Boogie Preprocessor took 48.93ms. Allocated memory is still 77.6MB. Free memory was 52.7MB in the beginning and 51.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 20:15:00,023 INFO L158 Benchmark]: RCFGBuilder took 520.76ms. Allocated memory is still 77.6MB. Free memory was 51.0MB in the beginning and 30.7MB in the end (delta: 20.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-09-15 20:15:00,024 INFO L158 Benchmark]: TraceAbstraction took 41264.06ms. Allocated memory was 77.6MB in the beginning and 197.1MB in the end (delta: 119.5MB). Free memory was 55.1MB in the beginning and 111.4MB in the end (delta: -56.3MB). Peak memory consumption was 62.0MB. Max. memory is 16.1GB. [2024-09-15 20:15:00,025 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.19ms. Allocated memory is still 60.8MB. Free memory was 37.9MB in the beginning and 37.8MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 1.03ms. Allocated memory is still 60.8MB. Free memory was 35.7MB in the beginning and 35.6MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 325.62ms. Allocated memory was 60.8MB in the beginning and 77.6MB in the end (delta: 16.8MB). Free memory was 35.3MB in the beginning and 54.8MB in the end (delta: -19.5MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.99ms. Allocated memory is still 77.6MB. Free memory was 54.8MB in the beginning and 52.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.93ms. Allocated memory is still 77.6MB. Free memory was 52.7MB in the beginning and 51.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 520.76ms. Allocated memory is still 77.6MB. Free memory was 51.0MB in the beginning and 30.7MB in the end (delta: 20.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 41264.06ms. Allocated memory was 77.6MB in the beginning and 197.1MB in the end (delta: 119.5MB). Free memory was 55.1MB in the beginning and 111.4MB in the end (delta: -56.3MB). Peak memory consumption was 62.0MB. 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: 35]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 42]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 49]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 10]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 10]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 10]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 10]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 10]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 7]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - PositiveResult [Line: 13]: 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: 10]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 45 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 41.2s, OverallIterations: 17, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 11.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 537 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 489 mSDsluCounter, 2427 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1777 mSDsCounter, 231 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2037 IncrementalHoareTripleChecker+Invalid, 2268 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 231 mSolverCounterUnsat, 650 mSDtfsCounter, 2037 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1324 GetRequests, 1108 SyntacticMatches, 2 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1263 ImplicationChecksByTransitivity, 21.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=7, InterpolantAutomatonStates: 147, 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, 17 MinimizatonAttempts, 107 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 26.3s InterpolantComputationTime, 1289 NumberOfCodeBlocks, 1289 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 1503 ConstructedInterpolants, 0 QuantifiedInterpolants, 16376 SizeOfPredicates, 44 NumberOfNonLiveVariables, 1542 ConjunctsInSsa, 307 ConjunctsInUnsatCore, 32 InterpolantComputations, 12 PerfectInterpolantSequences, 1601/1712 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 11 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-15 20:15:00,054 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE