./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/hard2_valuebound5.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 04d6fb36 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReachWitnessValidation.xml -i ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c ../results/automizer-verification-files/SV-COMP24_unreach-call/hard2_valuebound5.yml/witness-2.1.yml -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-04d6fb3-m [2024-09-15 20:18:01,399 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 20:18:01,480 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-15 20:18:01,486 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 20:18:01,488 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 20:18:01,514 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 20:18:01,516 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 20:18:01,517 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 20:18:01,517 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 20:18:01,518 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 20:18:01,518 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 20:18:01,521 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 20:18:01,522 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 20:18:01,522 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 20:18:01,522 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 20:18:01,523 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 20:18:01,527 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 20:18:01,527 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 20:18:01,528 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-15 20:18:01,528 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 20:18:01,528 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 20:18:01,529 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 20:18:01,529 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 20:18:01,530 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 20:18:01,530 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 20:18:01,530 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 20:18:01,533 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 20:18:01,533 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 20:18:01,534 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 20:18:01,534 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 20:18:01,535 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 20:18:01,535 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 20:18:01,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:18:01,536 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 20:18:01,536 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 20:18:01,536 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 20:18:01,537 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-15 20:18:01,537 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-15 20:18:01,538 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 20:18:01,538 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 20:18:01,538 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 20:18:01,538 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 20:18:01,539 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-15 20:18:01,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 20:18:01,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 20:18:01,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 20:18:01,902 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 20:18:01,902 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 20:18:01,903 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c [2024-09-15 20:18:03,398 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 20:18:03,601 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 20:18:03,601 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c [2024-09-15 20:18:03,612 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/216dd0b0c/4bb5c8b583264a71ab90818630bf3bc4/FLAG778780130 [2024-09-15 20:18:03,978 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/216dd0b0c/4bb5c8b583264a71ab90818630bf3bc4 [2024-09-15 20:18:03,980 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-15 20:18:03,981 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-15 20:18:03,982 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/hard2_valuebound5.yml/witness-2.1.yml [2024-09-15 20:18:04,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 20:18:04,033 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-15 20:18:04,036 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 20:18:04,036 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 20:18:04,040 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 20:18:04,041 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:18:03" (1/2) ... [2024-09-15 20:18:04,043 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49bec7a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:18:04, skipping insertion in model container [2024-09-15 20:18:04,044 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:18:03" (1/2) ... [2024-09-15 20:18:04,045 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3f332160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:18:04, skipping insertion in model container [2024-09-15 20:18:04,045 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:18:04" (2/2) ... [2024-09-15 20:18:04,045 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49bec7a5 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:18:04, skipping insertion in model container [2024-09-15 20:18:04,045 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:18:04" (2/2) ... [2024-09-15 20:18:04,055 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-15 20:18:04,057 INFO L1541 ArrayList]: Loop invariant at [L34-L42] ((((((((((0 <= A) && (A == r)) && (r <= 5)) && (d == 1)) && (q == 0)) && (B == 1)) && (p == 1)) || (((((((A == r) && (p == 8)) && (q == 0)) && (B == 1)) && (d == 8)) && (4 <= r)) && (A <= 5))) || (((((((0 <= A) && (A == r)) && (p == 2)) && (d == 2)) && (q == 0)) && (B == 1)) && (A <= 5))) || (((((((A == r) && (d == 4)) && (r <= 5)) && (2 <= r)) && (q == 0)) && (B == 1)) && (p == 4))) [2024-09-15 20:18:04,057 INFO L1541 ArrayList]: Loop invariant at [L44-L56] ((((((((((((A == r) && (p == 2)) && (d == 2)) && (q == 0)) && (B == 1)) || (((((((A == ((long long) q + r)) && (0 <= A)) && (r <= 1)) && (d == 4)) && (B == 1)) && (p == 4)) && (A <= 5))) || (((((((A == r) && (d == 4)) && (2 <= r)) && (q == 0)) && (B == 1)) && (r <= 3)) && (p == 4))) || (((((((A == ((long long) q + r)) && (0 <= A)) && (r <= 1)) && (p == 2)) && (d == 2)) && (B == 1)) && (A <= 5))) || (((((((A == r) && (p == 8)) && (q == 0)) && (B == 1)) && (d == 8)) && (4 <= r)) && (A <= 5))) || (((((A == ((long long) r + 1)) && (d == 1)) && (B == 1)) && (q == 1)) && (p == 1))) || (((((((A == ((long long) q + r)) && (0 <= A)) && (r <= 5)) && (d == 1)) && (B == 1)) && (A <= 5)) && (p == 1))) || (((((A == r) && (d == 1)) && (q == 0)) && (B == 1)) && (p == 1))) [2024-09-15 20:18:04,057 INFO L1541 ArrayList]: Function contract at [L11]: requires null, ensures (\old(cond) != 0) [2024-09-15 20:18:04,058 INFO L1541 ArrayList]: Function contract at [L14]: requires (\old(cond) != 0), ensures (\old(cond) != 0) [2024-09-15 20:18:04,075 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 20:18:04,246 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c[526,539] [2024-09-15 20:18:04,268 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:18:04,280 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global Start Parsing Global [2024-09-15 20:18:04,315 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c[526,539] Start Parsing Local Start Parsing Local [2024-09-15 20:18:04,349 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:18:04,367 INFO L204 MainTranslator]: Completed translation [2024-09-15 20:18:04,368 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:18:04 WrapperNode [2024-09-15 20:18:04,368 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 20:18:04,370 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-15 20:18:04,370 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-15 20:18:04,370 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-15 20:18:04,376 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:18:04" (1/1) ... [2024-09-15 20:18:04,383 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:18:04" (1/1) ... [2024-09-15 20:18:04,407 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2024-09-15 20:18:04,411 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-15 20:18:04,412 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 20:18:04,412 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 20:18:04,412 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 20:18:04,422 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:18:04" (1/1) ... [2024-09-15 20:18:04,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:18:04" (1/1) ... [2024-09-15 20:18:04,428 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:18:04" (1/1) ... [2024-09-15 20:18:04,443 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure __VERIFIER_assert is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-15 20:18:04,447 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:18:04" (1/1) ... [2024-09-15 20:18:04,447 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:18:04" (1/1) ... [2024-09-15 20:18:04,451 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:18:04" (1/1) ... [2024-09-15 20:18:04,457 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:18:04" (1/1) ... [2024-09-15 20:18:04,459 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:18:04" (1/1) ... [2024-09-15 20:18:04,460 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:18:04" (1/1) ... [2024-09-15 20:18:04,466 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 20:18:04,467 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 20:18:04,467 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 20:18:04,467 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 20:18:04,468 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:18:04" (1/1) ... [2024-09-15 20:18:04,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:18:04,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:18:04,501 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-15 20:18:04,511 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-15 20:18:04,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 20:18:04,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-15 20:18:04,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 20:18:04,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 20:18:04,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-15 20:18:04,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-15 20:18:04,622 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 20:18:04,624 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 20:18:04,801 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-15 20:18:04,833 INFO L? ?]: Removed 43 outVars from TransFormulas that were not future-live. [2024-09-15 20:18:04,839 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 20:18:04,865 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 20:18:04,866 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-15 20:18:04,866 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:18:04 BoogieIcfgContainer [2024-09-15 20:18:04,866 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 20:18:04,870 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-15 20:18:04,871 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-15 20:18:04,874 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-15 20:18:04,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 08:18:03" (1/4) ... [2024-09-15 20:18:04,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b42f3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 08:18:04, skipping insertion in model container [2024-09-15 20:18:04,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:18:04" (2/4) ... [2024-09-15 20:18:04,877 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b42f3f and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 15.09 08:18:04, skipping insertion in model container [2024-09-15 20:18:04,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:18:04" (3/4) ... [2024-09-15 20:18:04,878 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b42f3f and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 15.09 08:18:04, skipping insertion in model container [2024-09-15 20:18:04,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:18:04" (4/4) ... [2024-09-15 20:18:04,879 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound5.c [2024-09-15 20:18:04,894 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-15 20:18:04,894 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-09-15 20:18:04,941 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-15 20:18:04,950 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;@20959af1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-15 20:18:04,950 INFO L337 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-09-15 20:18:04,955 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 27 states have internal predecessors, (36), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-15 20:18:04,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-09-15 20:18:04,959 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:04,960 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-09-15 20:18:04,961 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:18:04,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:04,968 INFO L85 PathProgramCache]: Analyzing trace with hash 126055, now seen corresponding path program 1 times [2024-09-15 20:18:04,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:04,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400760444] [2024-09-15 20:18:04,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:04,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:05,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:18:05,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:05,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400760444] [2024-09-15 20:18:05,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400760444] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:18:05,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:18:05,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 20:18:05,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271906262] [2024-09-15 20:18:05,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:18:05,126 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-15 20:18:05,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:05,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-15 20:18:05,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-15 20:18:05,157 INFO L87 Difference]: Start difference. First operand has 36 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 27 states have internal predecessors, (36), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:18:05,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:05,191 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-09-15 20:18:05,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-15 20:18:05,194 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-09-15 20:18:05,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:05,200 INFO L225 Difference]: With dead ends: 36 [2024-09-15 20:18:05,200 INFO L226 Difference]: Without dead ends: 34 [2024-09-15 20:18:05,202 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-15 20:18:05,206 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:18:05,208 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:18:05,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-15 20:18:05,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-09-15 20:18:05,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 21 states have (on average 1.380952380952381) internal successors, (29), 26 states have internal predecessors, (29), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-15 20:18:05,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2024-09-15 20:18:05,244 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 3 [2024-09-15 20:18:05,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:05,245 INFO L474 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2024-09-15 20:18:05,245 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:18:05,245 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-09-15 20:18:05,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-09-15 20:18:05,246 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:05,246 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-09-15 20:18:05,247 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-15 20:18:05,247 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:18:05,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:05,248 INFO L85 PathProgramCache]: Analyzing trace with hash 126117, now seen corresponding path program 1 times [2024-09-15 20:18:05,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:05,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035985105] [2024-09-15 20:18:05,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:05,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:05,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:18:05,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:05,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035985105] [2024-09-15 20:18:05,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035985105] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:18:05,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:18:05,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 20:18:05,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011658384] [2024-09-15 20:18:05,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:18:05,344 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-15 20:18:05,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:05,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-15 20:18:05,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:18:05,345 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:18:05,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:05,371 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2024-09-15 20:18:05,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-15 20:18:05,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-09-15 20:18:05,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:05,375 INFO L225 Difference]: With dead ends: 33 [2024-09-15 20:18:05,375 INFO L226 Difference]: Without dead ends: 33 [2024-09-15 20:18:05,375 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:18:05,376 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:18:05,376 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:18:05,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-15 20:18:05,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-09-15 20:18:05,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 25 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-15 20:18:05,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2024-09-15 20:18:05,385 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 3 [2024-09-15 20:18:05,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:05,385 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2024-09-15 20:18:05,386 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:18:05,386 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2024-09-15 20:18:05,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-09-15 20:18:05,386 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:05,386 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-09-15 20:18:05,387 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-15 20:18:05,387 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:18:05,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:05,388 INFO L85 PathProgramCache]: Analyzing trace with hash 3909670, now seen corresponding path program 1 times [2024-09-15 20:18:05,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:05,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831773926] [2024-09-15 20:18:05,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:05,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:05,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:18:05,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:05,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831773926] [2024-09-15 20:18:05,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831773926] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:18:05,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:18:05,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-15 20:18:05,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598484914] [2024-09-15 20:18:05,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:18:05,667 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 20:18:05,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:05,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 20:18:05,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-09-15 20:18:05,669 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:18:05,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:05,775 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2024-09-15 20:18:05,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 20:18:05,776 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-09-15 20:18:05,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:05,777 INFO L225 Difference]: With dead ends: 44 [2024-09-15 20:18:05,777 INFO L226 Difference]: Without dead ends: 44 [2024-09-15 20:18:05,777 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-09-15 20:18:05,780 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 42 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:18:05,781 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 41 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:18:05,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-15 20:18:05,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-09-15 20:18:05,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 31 states have internal predecessors, (35), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-15 20:18:05,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2024-09-15 20:18:05,793 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 4 [2024-09-15 20:18:05,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:05,797 INFO L474 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2024-09-15 20:18:05,797 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:18:05,797 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2024-09-15 20:18:05,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-15 20:18:05,798 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:05,798 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:18:05,798 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-15 20:18:05,798 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:18:05,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:05,799 INFO L85 PathProgramCache]: Analyzing trace with hash -559254942, now seen corresponding path program 1 times [2024-09-15 20:18:05,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:05,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641781568] [2024-09-15 20:18:05,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:05,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:05,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:18:05,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:05,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641781568] [2024-09-15 20:18:05,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641781568] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:18:05,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:18:05,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 20:18:05,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923407349] [2024-09-15 20:18:05,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:18:05,830 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:18:05,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:05,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:18:05,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:18:05,831 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:18:05,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:05,867 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2024-09-15 20:18:05,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:18:05,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-09-15 20:18:05,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:05,868 INFO L225 Difference]: With dead ends: 43 [2024-09-15 20:18:05,868 INFO L226 Difference]: Without dead ends: 43 [2024-09-15 20:18:05,869 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:18:05,870 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 3 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:18:05,870 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 52 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:18:05,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-15 20:18:05,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-09-15 20:18:05,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 30 states have internal predecessors, (34), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-15 20:18:05,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2024-09-15 20:18:05,879 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 9 [2024-09-15 20:18:05,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:05,880 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2024-09-15 20:18:05,880 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:18:05,881 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2024-09-15 20:18:05,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-15 20:18:05,881 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:05,882 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:18:05,882 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-15 20:18:05,882 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:18:05,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:05,883 INFO L85 PathProgramCache]: Analyzing trace with hash -559255103, now seen corresponding path program 1 times [2024-09-15 20:18:05,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:05,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920632971] [2024-09-15 20:18:05,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:05,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:05,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:18:05,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:05,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920632971] [2024-09-15 20:18:05,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920632971] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:18:05,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:18:05,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-15 20:18:05,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854257182] [2024-09-15 20:18:05,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:18:05,922 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:18:05,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:05,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:18:05,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:18:05,923 INFO L87 Difference]: Start difference. First operand 43 states and 57 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:18:05,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:05,931 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2024-09-15 20:18:05,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:18:05,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-09-15 20:18:05,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:05,932 INFO L225 Difference]: With dead ends: 41 [2024-09-15 20:18:05,932 INFO L226 Difference]: Without dead ends: 41 [2024-09-15 20:18:05,932 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:18:05,933 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:18:05,934 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:18:05,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-15 20:18:05,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-09-15 20:18:05,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 28 states have internal predecessors, (32), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-15 20:18:05,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 54 transitions. [2024-09-15 20:18:05,941 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 54 transitions. Word has length 9 [2024-09-15 20:18:05,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:05,941 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 54 transitions. [2024-09-15 20:18:05,941 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:18:05,941 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 54 transitions. [2024-09-15 20:18:05,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-15 20:18:05,942 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:05,942 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:18:05,942 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-15 20:18:05,942 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:18:05,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:05,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1484025061, now seen corresponding path program 1 times [2024-09-15 20:18:05,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:05,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325064575] [2024-09-15 20:18:05,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:05,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:06,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 20:18:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:06,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 20:18:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:06,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-15 20:18:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:06,323 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-15 20:18:06,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:06,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325064575] [2024-09-15 20:18:06,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325064575] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:18:06,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923987885] [2024-09-15 20:18:06,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:06,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:18:06,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:18:06,326 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:18:06,328 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-15 20:18:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:06,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-15 20:18:06,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:18:06,631 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-15 20:18:06,632 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:18:07,062 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-15 20:18:07,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923987885] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:18:07,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:18:07,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-09-15 20:18:07,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448926986] [2024-09-15 20:18:07,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:18:07,064 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-15 20:18:07,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:07,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-15 20:18:07,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-09-15 20:18:07,067 INFO L87 Difference]: Start difference. First operand 41 states and 54 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-15 20:18:07,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:07,294 INFO L93 Difference]: Finished difference Result 70 states and 106 transitions. [2024-09-15 20:18:07,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-15 20:18:07,295 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 22 [2024-09-15 20:18:07,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:07,296 INFO L225 Difference]: With dead ends: 70 [2024-09-15 20:18:07,296 INFO L226 Difference]: Without dead ends: 70 [2024-09-15 20:18:07,296 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-09-15 20:18:07,297 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 27 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 20:18:07,297 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 102 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 20:18:07,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-09-15 20:18:07,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 53. [2024-09-15 20:18:07,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 35 states have internal predecessors, (41), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-15 20:18:07,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 73 transitions. [2024-09-15 20:18:07,305 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 73 transitions. Word has length 22 [2024-09-15 20:18:07,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:07,306 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 73 transitions. [2024-09-15 20:18:07,306 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-15 20:18:07,306 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 73 transitions. [2024-09-15 20:18:07,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-15 20:18:07,307 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:07,307 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:18:07,324 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-15 20:18:07,511 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-15 20:18:07,512 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:18:07,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:07,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1805205026, now seen corresponding path program 1 times [2024-09-15 20:18:07,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:07,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446846019] [2024-09-15 20:18:07,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:07,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 20:18:07,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171362483] [2024-09-15 20:18:07,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:07,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:18:07,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:18:07,533 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:18:07,534 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-15 20:18:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:07,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-15 20:18:07,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:18:07,649 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-15 20:18:07,649 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-15 20:18:07,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:07,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446846019] [2024-09-15 20:18:07,651 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 20:18:07,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171362483] [2024-09-15 20:18:07,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171362483] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:18:07,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:18:07,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 20:18:07,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047963936] [2024-09-15 20:18:07,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:18:07,652 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:18:07,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:07,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:18:07,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:18:07,654 INFO L87 Difference]: Start difference. First operand 53 states and 73 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-15 20:18:07,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:07,689 INFO L93 Difference]: Finished difference Result 61 states and 86 transitions. [2024-09-15 20:18:07,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:18:07,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 35 [2024-09-15 20:18:07,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:07,692 INFO L225 Difference]: With dead ends: 61 [2024-09-15 20:18:07,692 INFO L226 Difference]: Without dead ends: 61 [2024-09-15 20:18:07,692 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:18:07,692 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:18:07,693 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 44 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:18:07,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-09-15 20:18:07,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2024-09-15 20:18:07,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-15 20:18:07,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 85 transitions. [2024-09-15 20:18:07,704 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 85 transitions. Word has length 35 [2024-09-15 20:18:07,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:07,704 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 85 transitions. [2024-09-15 20:18:07,704 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-15 20:18:07,704 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 85 transitions. [2024-09-15 20:18:07,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-15 20:18:07,705 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:07,706 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-09-15 20:18:07,722 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 20:18:07,909 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-15 20:18:07,910 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:18:07,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:07,910 INFO L85 PathProgramCache]: Analyzing trace with hash -140304412, now seen corresponding path program 2 times [2024-09-15 20:18:07,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:07,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374855504] [2024-09-15 20:18:07,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:07,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:08,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 20:18:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:08,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 20:18:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:08,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-15 20:18:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:08,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 20:18:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:08,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-15 20:18:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:08,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-15 20:18:08,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:08,249 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-15 20:18:08,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:08,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374855504] [2024-09-15 20:18:08,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374855504] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:18:08,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902085672] [2024-09-15 20:18:08,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 20:18:08,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:18:08,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:18:08,257 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:18:08,259 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-15 20:18:08,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 20:18:08,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:18:08,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-15 20:18:08,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:18:08,582 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-15 20:18:08,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:18:09,000 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-15 20:18:09,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902085672] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:18:09,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:18:09,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-09-15 20:18:09,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396528985] [2024-09-15 20:18:09,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:18:09,002 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-15 20:18:09,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:09,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-15 20:18:09,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-09-15 20:18:09,005 INFO L87 Difference]: Start difference. First operand 58 states and 85 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-09-15 20:18:09,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:09,439 INFO L93 Difference]: Finished difference Result 101 states and 159 transitions. [2024-09-15 20:18:09,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-15 20:18:09,440 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 40 [2024-09-15 20:18:09,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:09,442 INFO L225 Difference]: With dead ends: 101 [2024-09-15 20:18:09,443 INFO L226 Difference]: Without dead ends: 101 [2024-09-15 20:18:09,443 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 84 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-09-15 20:18:09,444 INFO L434 NwaCegarLoop]: 57 mSDtfsCounter, 37 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-15 20:18:09,444 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 219 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-15 20:18:09,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-09-15 20:18:09,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 76. [2024-09-15 20:18:09,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 48 states have internal predecessors, (59), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-15 20:18:09,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 113 transitions. [2024-09-15 20:18:09,457 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 113 transitions. Word has length 40 [2024-09-15 20:18:09,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:09,458 INFO L474 AbstractCegarLoop]: Abstraction has 76 states and 113 transitions. [2024-09-15 20:18:09,458 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-09-15 20:18:09,458 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 113 transitions. [2024-09-15 20:18:09,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-15 20:18:09,459 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:09,459 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:18:09,475 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-15 20:18:09,663 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-09-15 20:18:09,664 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:18:09,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:09,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1181912687, now seen corresponding path program 1 times [2024-09-15 20:18:09,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:09,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995777325] [2024-09-15 20:18:09,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:09,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:09,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 20:18:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:09,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 20:18:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:09,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-15 20:18:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:09,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 20:18:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:09,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-15 20:18:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:09,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-15 20:18:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:09,733 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-15 20:18:09,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:09,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995777325] [2024-09-15 20:18:09,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995777325] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:18:09,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:18:09,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 20:18:09,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482694908] [2024-09-15 20:18:09,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:18:09,734 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:18:09,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:09,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:18:09,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:18:09,735 INFO L87 Difference]: Start difference. First operand 76 states and 113 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-09-15 20:18:09,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:09,763 INFO L93 Difference]: Finished difference Result 83 states and 122 transitions. [2024-09-15 20:18:09,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:18:09,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 40 [2024-09-15 20:18:09,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:09,764 INFO L225 Difference]: With dead ends: 83 [2024-09-15 20:18:09,764 INFO L226 Difference]: Without dead ends: 76 [2024-09-15 20:18:09,764 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:18:09,765 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:18:09,765 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:18:09,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-09-15 20:18:09,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-09-15 20:18:09,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 48 states have internal predecessors, (58), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-15 20:18:09,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 112 transitions. [2024-09-15 20:18:09,774 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 112 transitions. Word has length 40 [2024-09-15 20:18:09,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:09,774 INFO L474 AbstractCegarLoop]: Abstraction has 76 states and 112 transitions. [2024-09-15 20:18:09,774 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-09-15 20:18:09,774 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 112 transitions. [2024-09-15 20:18:09,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-15 20:18:09,778 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:09,778 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:18:09,778 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-09-15 20:18:09,778 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:18:09,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:09,779 INFO L85 PathProgramCache]: Analyzing trace with hash -2138076849, now seen corresponding path program 1 times [2024-09-15 20:18:09,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:09,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984901469] [2024-09-15 20:18:09,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:09,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:10,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 20:18:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:10,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 20:18:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:10,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-15 20:18:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:10,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 20:18:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:10,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-15 20:18:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:10,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-15 20:18:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:10,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 20:18:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:10,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-15 20:18:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:10,372 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-15 20:18:10,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:10,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984901469] [2024-09-15 20:18:10,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984901469] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:18:10,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408379152] [2024-09-15 20:18:10,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:10,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:18:10,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:18:10,375 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:18:10,376 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-15 20:18:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:10,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-15 20:18:10,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:18:10,648 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-15 20:18:10,648 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:18:11,049 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-15 20:18:11,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408379152] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:18:11,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:18:11,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 7 [2024-09-15 20:18:11,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970335640] [2024-09-15 20:18:11,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:18:11,050 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-15 20:18:11,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:11,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-15 20:18:11,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-09-15 20:18:11,053 INFO L87 Difference]: Start difference. First operand 76 states and 112 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-09-15 20:18:11,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:11,190 INFO L93 Difference]: Finished difference Result 92 states and 135 transitions. [2024-09-15 20:18:11,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 20:18:11,190 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 54 [2024-09-15 20:18:11,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:11,191 INFO L225 Difference]: With dead ends: 92 [2024-09-15 20:18:11,191 INFO L226 Difference]: Without dead ends: 92 [2024-09-15 20:18:11,192 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-09-15 20:18:11,192 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 13 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:18:11,192 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 143 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:18:11,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-09-15 20:18:11,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 87. [2024-09-15 20:18:11,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 53 states have (on average 1.2452830188679245) internal successors, (66), 55 states have internal predecessors, (66), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-15 20:18:11,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 128 transitions. [2024-09-15 20:18:11,204 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 128 transitions. Word has length 54 [2024-09-15 20:18:11,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:11,204 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 128 transitions. [2024-09-15 20:18:11,205 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-09-15 20:18:11,205 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 128 transitions. [2024-09-15 20:18:11,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-09-15 20:18:11,206 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:11,206 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2024-09-15 20:18:11,226 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-15 20:18:11,407 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 20:18:11,407 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:18:11,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:11,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1140805341, now seen corresponding path program 3 times [2024-09-15 20:18:11,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:11,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265409854] [2024-09-15 20:18:11,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:11,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:11,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 20:18:11,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:11,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 20:18:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:11,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-15 20:18:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:11,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 20:18:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:11,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-15 20:18:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:11,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-15 20:18:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:11,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 20:18:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:11,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-15 20:18:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:11,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-15 20:18:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:11,773 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-15 20:18:11,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:11,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265409854] [2024-09-15 20:18:11,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265409854] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:18:11,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864392921] [2024-09-15 20:18:11,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 20:18:11,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:18:11,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:18:11,776 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:18:11,778 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-15 20:18:11,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-15 20:18:11,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:18:11,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-15 20:18:11,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:18:12,428 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-09-15 20:18:12,428 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:18:12,948 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-09-15 20:18:12,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864392921] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-15 20:18:12,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-15 20:18:12,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 5] total 11 [2024-09-15 20:18:12,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847902289] [2024-09-15 20:18:12,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:18:12,950 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-15 20:18:12,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:12,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-15 20:18:12,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-09-15 20:18:12,951 INFO L87 Difference]: Start difference. First operand 87 states and 128 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-15 20:18:13,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:13,022 INFO L93 Difference]: Finished difference Result 96 states and 147 transitions. [2024-09-15 20:18:13,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-15 20:18:13,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 58 [2024-09-15 20:18:13,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:13,024 INFO L225 Difference]: With dead ends: 96 [2024-09-15 20:18:13,024 INFO L226 Difference]: Without dead ends: 96 [2024-09-15 20:18:13,025 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-09-15 20:18:13,025 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 11 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:18:13,026 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 50 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:18:13,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-09-15 20:18:13,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2024-09-15 20:18:13,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 56 states have internal predecessors, (68), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-15 20:18:13,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 134 transitions. [2024-09-15 20:18:13,039 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 134 transitions. Word has length 58 [2024-09-15 20:18:13,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:13,040 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 134 transitions. [2024-09-15 20:18:13,040 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-15 20:18:13,040 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 134 transitions. [2024-09-15 20:18:13,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-09-15 20:18:13,041 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:13,041 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:18:13,061 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-15 20:18:13,242 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 20:18:13,242 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:18:13,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:13,243 INFO L85 PathProgramCache]: Analyzing trace with hash -17133746, now seen corresponding path program 1 times [2024-09-15 20:18:13,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:13,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127908931] [2024-09-15 20:18:13,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:13,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 20:18:13,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [835308857] [2024-09-15 20:18:13,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:13,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:18:13,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:18:13,264 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:18:13,267 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-15 20:18:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:13,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-15 20:18:13,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:18:13,423 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-09-15 20:18:13,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:18:13,591 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-09-15 20:18:13,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:13,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127908931] [2024-09-15 20:18:13,591 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 20:18:13,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835308857] [2024-09-15 20:18:13,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835308857] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:18:13,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-15 20:18:13,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-09-15 20:18:13,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595340326] [2024-09-15 20:18:13,592 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-15 20:18:13,592 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-15 20:18:13,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:13,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-15 20:18:13,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-09-15 20:18:13,593 INFO L87 Difference]: Start difference. First operand 90 states and 134 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-15 20:18:13,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:13,691 INFO L93 Difference]: Finished difference Result 99 states and 148 transitions. [2024-09-15 20:18:13,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-15 20:18:13,692 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 67 [2024-09-15 20:18:13,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:13,693 INFO L225 Difference]: With dead ends: 99 [2024-09-15 20:18:13,693 INFO L226 Difference]: Without dead ends: 99 [2024-09-15 20:18:13,693 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-09-15 20:18:13,693 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 4 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:18:13,693 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 97 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:18:13,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-09-15 20:18:13,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 83. [2024-09-15 20:18:13,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 51 states have internal predecessors, (64), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-15 20:18:13,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 124 transitions. [2024-09-15 20:18:13,705 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 124 transitions. Word has length 67 [2024-09-15 20:18:13,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:13,705 INFO L474 AbstractCegarLoop]: Abstraction has 83 states and 124 transitions. [2024-09-15 20:18:13,706 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-15 20:18:13,706 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 124 transitions. [2024-09-15 20:18:13,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-15 20:18:13,706 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:13,707 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:18:13,725 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-15 20:18:13,907 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 20:18:13,908 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:18:13,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:13,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1113227342, now seen corresponding path program 2 times [2024-09-15 20:18:13,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:13,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163413725] [2024-09-15 20:18:13,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:13,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:14,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 20:18:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:14,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 20:18:14,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:14,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-15 20:18:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:14,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 20:18:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:14,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-15 20:18:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:14,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-15 20:18:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:14,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 20:18:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:14,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-15 20:18:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:14,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-15 20:18:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:14,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-15 20:18:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:14,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 20:18:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:14,578 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-15 20:18:14,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:14,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163413725] [2024-09-15 20:18:14,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163413725] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:18:14,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4215304] [2024-09-15 20:18:14,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 20:18:14,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:18:14,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:18:14,581 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:18:14,582 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-15 20:18:14,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 20:18:14,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:18:14,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-15 20:18:14,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:18:15,057 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-15 20:18:15,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:18:16,144 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-15 20:18:16,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4215304] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:18:16,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:18:16,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 19 [2024-09-15 20:18:16,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081611562] [2024-09-15 20:18:16,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:18:16,146 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-15 20:18:16,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:16,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-15 20:18:16,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-09-15 20:18:16,148 INFO L87 Difference]: Start difference. First operand 83 states and 124 transitions. Second operand has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 20 states have internal predecessors, (45), 10 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 10 states have call predecessors, (27), 10 states have call successors, (27) [2024-09-15 20:18:16,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:16,897 INFO L93 Difference]: Finished difference Result 130 states and 201 transitions. [2024-09-15 20:18:16,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-15 20:18:16,898 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 20 states have internal predecessors, (45), 10 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 10 states have call predecessors, (27), 10 states have call successors, (27) Word has length 72 [2024-09-15 20:18:16,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:16,899 INFO L225 Difference]: With dead ends: 130 [2024-09-15 20:18:16,899 INFO L226 Difference]: Without dead ends: 130 [2024-09-15 20:18:16,899 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=170, Invalid=532, Unknown=0, NotChecked=0, Total=702 [2024-09-15 20:18:16,900 INFO L434 NwaCegarLoop]: 69 mSDtfsCounter, 40 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-15 20:18:16,900 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 390 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-15 20:18:16,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-09-15 20:18:16,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 100. [2024-09-15 20:18:16,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 64 states have (on average 1.25) internal successors, (80), 62 states have internal predecessors, (80), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-15 20:18:16,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 152 transitions. [2024-09-15 20:18:16,906 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 152 transitions. Word has length 72 [2024-09-15 20:18:16,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:16,906 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 152 transitions. [2024-09-15 20:18:16,907 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 20 states have internal predecessors, (45), 10 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 10 states have call predecessors, (27), 10 states have call successors, (27) [2024-09-15 20:18:16,907 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 152 transitions. [2024-09-15 20:18:16,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-15 20:18:16,907 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:16,908 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:18:16,925 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-15 20:18:17,108 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 20:18:17,109 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:18:17,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:17,109 INFO L85 PathProgramCache]: Analyzing trace with hash 274048767, now seen corresponding path program 1 times [2024-09-15 20:18:17,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:17,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505087944] [2024-09-15 20:18:17,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:17,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:17,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 20:18:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:17,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 20:18:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:17,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-15 20:18:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:17,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 20:18:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:17,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-15 20:18:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:17,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-15 20:18:17,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:17,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 20:18:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:17,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-15 20:18:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:17,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-15 20:18:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:17,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-15 20:18:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:17,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-15 20:18:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:17,410 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-15 20:18:17,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:17,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505087944] [2024-09-15 20:18:17,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505087944] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:18:17,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696538316] [2024-09-15 20:18:17,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:17,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:18:17,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:18:17,414 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 20:18:17,416 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 20:18:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:17,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-15 20:18:17,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:18:17,626 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2024-09-15 20:18:17,627 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-15 20:18:17,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696538316] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:18:17,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-15 20:18:17,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-09-15 20:18:17,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990481794] [2024-09-15 20:18:17,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:18:17,628 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 20:18:17,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:17,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 20:18:17,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-09-15 20:18:17,629 INFO L87 Difference]: Start difference. First operand 100 states and 152 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-15 20:18:17,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:17,683 INFO L93 Difference]: Finished difference Result 98 states and 148 transitions. [2024-09-15 20:18:17,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-15 20:18:17,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 72 [2024-09-15 20:18:17,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:17,684 INFO L225 Difference]: With dead ends: 98 [2024-09-15 20:18:17,684 INFO L226 Difference]: Without dead ends: 85 [2024-09-15 20:18:17,684 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-09-15 20:18:17,685 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:18:17,685 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 29 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:18:17,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-09-15 20:18:17,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 78. [2024-09-15 20:18:17,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 49 states have (on average 1.183673469387755) internal successors, (58), 49 states have internal predecessors, (58), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-15 20:18:17,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 114 transitions. [2024-09-15 20:18:17,690 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 114 transitions. Word has length 72 [2024-09-15 20:18:17,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:17,690 INFO L474 AbstractCegarLoop]: Abstraction has 78 states and 114 transitions. [2024-09-15 20:18:17,690 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-15 20:18:17,690 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 114 transitions. [2024-09-15 20:18:17,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-09-15 20:18:17,691 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:17,691 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1] [2024-09-15 20:18:17,708 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 20:18:17,892 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 20:18:17,892 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:18:17,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:17,893 INFO L85 PathProgramCache]: Analyzing trace with hash 560599164, now seen corresponding path program 1 times [2024-09-15 20:18:17,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:17,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284962009] [2024-09-15 20:18:17,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:17,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:18,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 20:18:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:18,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 20:18:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:18,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-15 20:18:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:18,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 20:18:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:18,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-15 20:18:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:18,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-15 20:18:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:18,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 20:18:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:18,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-15 20:18:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:18,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-15 20:18:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:18,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-15 20:18:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:18,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 20:18:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:18,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-15 20:18:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:18,246 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-15 20:18:18,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:18,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284962009] [2024-09-15 20:18:18,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284962009] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:18:18,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118868794] [2024-09-15 20:18:18,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:18,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:18:18,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:18:18,250 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 20:18:18,253 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 20:18:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:18,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-15 20:18:18,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:18:18,606 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-15 20:18:18,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:18:18,992 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 31 proven. 5 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-15 20:18:18,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118868794] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:18:18,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:18:18,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 11 [2024-09-15 20:18:18,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963030189] [2024-09-15 20:18:18,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:18:18,993 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-15 20:18:18,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:18,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-15 20:18:18,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-09-15 20:18:18,994 INFO L87 Difference]: Start difference. First operand 78 states and 114 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 9 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2024-09-15 20:18:19,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:19,232 INFO L93 Difference]: Finished difference Result 101 states and 151 transitions. [2024-09-15 20:18:19,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-15 20:18:19,233 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 9 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) Word has length 76 [2024-09-15 20:18:19,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:19,233 INFO L225 Difference]: With dead ends: 101 [2024-09-15 20:18:19,233 INFO L226 Difference]: Without dead ends: 96 [2024-09-15 20:18:19,234 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2024-09-15 20:18:19,234 INFO L434 NwaCegarLoop]: 55 mSDtfsCounter, 26 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 20:18:19,235 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 164 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 20:18:19,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-09-15 20:18:19,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 72. [2024-09-15 20:18:19,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 46 states have (on average 1.173913043478261) internal successors, (54), 46 states have internal predecessors, (54), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-15 20:18:19,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 104 transitions. [2024-09-15 20:18:19,239 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 104 transitions. Word has length 76 [2024-09-15 20:18:19,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:19,239 INFO L474 AbstractCegarLoop]: Abstraction has 72 states and 104 transitions. [2024-09-15 20:18:19,240 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 9 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2024-09-15 20:18:19,240 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 104 transitions. [2024-09-15 20:18:19,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-09-15 20:18:19,241 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:19,241 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-09-15 20:18:19,257 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 20:18:19,444 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 20:18:19,445 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:18:19,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:19,445 INFO L85 PathProgramCache]: Analyzing trace with hash 306884063, now seen corresponding path program 3 times [2024-09-15 20:18:19,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:19,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996432046] [2024-09-15 20:18:19,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:19,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:20,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 20:18:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:20,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 20:18:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:20,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-15 20:18:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:20,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 20:18:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:20,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-15 20:18:20,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:20,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-15 20:18:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:20,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 20:18:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:20,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-15 20:18:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:20,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-15 20:18:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:20,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-15 20:18:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:20,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 20:18:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:20,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-15 20:18:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:20,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-15 20:18:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:20,360 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-15 20:18:20,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:20,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996432046] [2024-09-15 20:18:20,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996432046] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:18:20,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073655358] [2024-09-15 20:18:20,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 20:18:20,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:18:20,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:18:20,371 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 20:18:20,376 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 20:18:20,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-15 20:18:20,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:18:20,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-15 20:18:20,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:18:20,972 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-15 20:18:20,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:18:23,629 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-15 20:18:23,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073655358] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:18:23,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:18:23,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-09-15 20:18:23,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832371542] [2024-09-15 20:18:23,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:18:23,631 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-15 20:18:23,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:23,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-15 20:18:23,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2024-09-15 20:18:23,633 INFO L87 Difference]: Start difference. First operand 72 states and 104 transitions. Second operand has 25 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 25 states have internal predecessors, (61), 12 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) [2024-09-15 20:18:24,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:24,002 INFO L93 Difference]: Finished difference Result 79 states and 110 transitions. [2024-09-15 20:18:24,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-15 20:18:24,003 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 25 states have internal predecessors, (61), 12 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) Word has length 86 [2024-09-15 20:18:24,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:24,003 INFO L225 Difference]: With dead ends: 79 [2024-09-15 20:18:24,003 INFO L226 Difference]: Without dead ends: 57 [2024-09-15 20:18:24,004 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=208, Invalid=662, Unknown=0, NotChecked=0, Total=870 [2024-09-15 20:18:24,004 INFO L434 NwaCegarLoop]: 52 mSDtfsCounter, 23 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 20:18:24,005 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 191 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 20:18:24,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-09-15 20:18:24,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-09-15 20:18:24,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-15 20:18:24,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 80 transitions. [2024-09-15 20:18:24,008 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 80 transitions. Word has length 86 [2024-09-15 20:18:24,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:24,008 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 80 transitions. [2024-09-15 20:18:24,009 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 25 states have internal predecessors, (61), 12 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) [2024-09-15 20:18:24,009 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 80 transitions. [2024-09-15 20:18:24,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-09-15 20:18:24,010 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:24,010 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:18:24,026 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-15 20:18:24,213 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 20:18:24,214 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:18:24,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:24,214 INFO L85 PathProgramCache]: Analyzing trace with hash 2085311885, now seen corresponding path program 4 times [2024-09-15 20:18:24,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:24,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926969842] [2024-09-15 20:18:24,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:24,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:24,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 20:18:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:24,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 20:18:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:24,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-15 20:18:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:24,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 20:18:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:24,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-15 20:18:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:24,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-15 20:18:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:24,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 20:18:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:24,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-15 20:18:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:24,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-15 20:18:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:24,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-15 20:18:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:24,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 20:18:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:24,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-15 20:18:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:24,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-15 20:18:24,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:24,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-15 20:18:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:24,773 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-15 20:18:24,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:24,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926969842] [2024-09-15 20:18:24,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926969842] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:18:24,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631910732] [2024-09-15 20:18:24,774 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-15 20:18:24,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:18:24,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:18:24,776 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 20:18:24,785 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 20:18:24,844 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-15 20:18:24,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:18:24,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-15 20:18:24,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:18:25,204 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-15 20:18:25,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:18:25,921 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-15 20:18:25,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631910732] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:18:25,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:18:25,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-09-15 20:18:25,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91594198] [2024-09-15 20:18:25,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:18:25,922 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-15 20:18:25,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:25,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-15 20:18:25,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-09-15 20:18:25,923 INFO L87 Difference]: Start difference. First operand 57 states and 80 transitions. Second operand has 16 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 16 states have internal predecessors, (47), 9 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 9 states have call predecessors, (31), 9 states have call successors, (31) [2024-09-15 20:18:26,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:26,230 INFO L93 Difference]: Finished difference Result 84 states and 124 transitions. [2024-09-15 20:18:26,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-15 20:18:26,230 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 16 states have internal predecessors, (47), 9 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 9 states have call predecessors, (31), 9 states have call successors, (31) Word has length 90 [2024-09-15 20:18:26,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:26,231 INFO L225 Difference]: With dead ends: 84 [2024-09-15 20:18:26,231 INFO L226 Difference]: Without dead ends: 84 [2024-09-15 20:18:26,231 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 198 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2024-09-15 20:18:26,232 INFO L434 NwaCegarLoop]: 60 mSDtfsCounter, 31 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 20:18:26,232 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 309 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 20:18:26,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-09-15 20:18:26,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 66. [2024-09-15 20:18:26,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 41 states have (on average 1.146341463414634) internal successors, (47), 42 states have internal predecessors, (47), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-15 20:18:26,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 93 transitions. [2024-09-15 20:18:26,235 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 93 transitions. Word has length 90 [2024-09-15 20:18:26,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:26,236 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 93 transitions. [2024-09-15 20:18:26,236 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 16 states have internal predecessors, (47), 9 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 9 states have call predecessors, (31), 9 states have call successors, (31) [2024-09-15 20:18:26,236 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 93 transitions. [2024-09-15 20:18:26,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-15 20:18:26,237 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:26,237 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-09-15 20:18:26,250 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 20:18:26,439 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 20:18:26,439 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:18:26,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:26,440 INFO L85 PathProgramCache]: Analyzing trace with hash -727586594, now seen corresponding path program 5 times [2024-09-15 20:18:26,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:26,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615277837] [2024-09-15 20:18:26,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:26,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:26,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 20:18:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:26,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 20:18:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:26,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-15 20:18:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:26,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 20:18:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:26,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-15 20:18:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:26,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-15 20:18:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:26,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 20:18:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:26,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-15 20:18:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:26,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-15 20:18:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:26,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-15 20:18:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:26,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 20:18:26,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:26,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-15 20:18:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:26,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-15 20:18:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:26,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-15 20:18:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:26,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-15 20:18:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:26,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-15 20:18:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:26,871 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 2 proven. 42 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-15 20:18:26,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:26,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615277837] [2024-09-15 20:18:26,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615277837] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:18:26,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081621319] [2024-09-15 20:18:26,872 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-15 20:18:26,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:18:26,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:18:26,874 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:18:26,876 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-15 20:18:26,952 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-09-15 20:18:26,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:18:26,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-15 20:18:26,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:18:27,193 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 8 proven. 36 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-15 20:18:27,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:18:27,961 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 21 proven. 23 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-15 20:18:27,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081621319] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:18:27,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:18:27,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 24 [2024-09-15 20:18:27,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731286171] [2024-09-15 20:18:27,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:18:27,962 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-15 20:18:27,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:27,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-15 20:18:27,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2024-09-15 20:18:27,963 INFO L87 Difference]: Start difference. First operand 66 states and 93 transitions. Second operand has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 24 states have internal predecessors, (68), 16 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 16 states have call predecessors, (48), 16 states have call successors, (48) [2024-09-15 20:18:28,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:28,430 INFO L93 Difference]: Finished difference Result 79 states and 114 transitions. [2024-09-15 20:18:28,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-15 20:18:28,430 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 24 states have internal predecessors, (68), 16 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 16 states have call predecessors, (48), 16 states have call successors, (48) Word has length 104 [2024-09-15 20:18:28,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:28,431 INFO L225 Difference]: With dead ends: 79 [2024-09-15 20:18:28,431 INFO L226 Difference]: Without dead ends: 79 [2024-09-15 20:18:28,431 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 225 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=207, Invalid=1053, Unknown=0, NotChecked=0, Total=1260 [2024-09-15 20:18:28,432 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 39 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-15 20:18:28,432 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 411 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-15 20:18:28,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-09-15 20:18:28,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 66. [2024-09-15 20:18:28,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 42 states have internal predecessors, (46), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-15 20:18:28,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 92 transitions. [2024-09-15 20:18:28,435 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 92 transitions. Word has length 104 [2024-09-15 20:18:28,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:28,436 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 92 transitions. [2024-09-15 20:18:28,436 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 24 states have internal predecessors, (68), 16 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 16 states have call predecessors, (48), 16 states have call successors, (48) [2024-09-15 20:18:28,436 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 92 transitions. [2024-09-15 20:18:28,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-15 20:18:28,437 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:28,437 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:18:28,452 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-15 20:18:28,638 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-15 20:18:28,638 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:18:28,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:28,638 INFO L85 PathProgramCache]: Analyzing trace with hash -727586532, now seen corresponding path program 1 times [2024-09-15 20:18:28,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:28,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99100221] [2024-09-15 20:18:28,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:28,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:29,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 20:18:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:29,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 20:18:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:29,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-15 20:18:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:29,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 20:18:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:29,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-15 20:18:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:29,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-15 20:18:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:29,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 20:18:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:29,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-15 20:18:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:29,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-15 20:18:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:29,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-15 20:18:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:29,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 20:18:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:29,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-15 20:18:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:29,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-15 20:18:29,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:29,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-15 20:18:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:29,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-15 20:18:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:29,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-15 20:18:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:29,462 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-15 20:18:29,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:29,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99100221] [2024-09-15 20:18:29,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99100221] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:18:29,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347824586] [2024-09-15 20:18:29,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:29,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:18:29,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:18:29,465 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:18:29,467 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-15 20:18:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:29,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-15 20:18:29,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:18:29,998 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-15 20:18:29,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:18:31,719 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 19 proven. 25 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-15 20:18:31,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347824586] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:18:31,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:18:31,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 27 [2024-09-15 20:18:31,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211071308] [2024-09-15 20:18:31,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:18:31,720 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-15 20:18:31,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:31,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-15 20:18:31,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=597, Unknown=0, NotChecked=0, Total=756 [2024-09-15 20:18:31,722 INFO L87 Difference]: Start difference. First operand 66 states and 92 transitions. Second operand has 28 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 28 states have internal predecessors, (71), 15 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 15 states have call predecessors, (48), 15 states have call successors, (48) [2024-09-15 20:18:31,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:31,980 INFO L93 Difference]: Finished difference Result 57 states and 76 transitions. [2024-09-15 20:18:31,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-15 20:18:31,981 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 28 states have internal predecessors, (71), 15 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 15 states have call predecessors, (48), 15 states have call successors, (48) Word has length 104 [2024-09-15 20:18:31,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:31,981 INFO L225 Difference]: With dead ends: 57 [2024-09-15 20:18:31,982 INFO L226 Difference]: Without dead ends: 54 [2024-09-15 20:18:31,982 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=191, Invalid=739, Unknown=0, NotChecked=0, Total=930 [2024-09-15 20:18:31,982 INFO L434 NwaCegarLoop]: 52 mSDtfsCounter, 13 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 20:18:31,983 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 325 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 20:18:31,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-09-15 20:18:31,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-09-15 20:18:31,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-15 20:18:31,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 71 transitions. [2024-09-15 20:18:31,985 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 71 transitions. Word has length 104 [2024-09-15 20:18:31,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:31,986 INFO L474 AbstractCegarLoop]: Abstraction has 54 states and 71 transitions. [2024-09-15 20:18:31,986 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 28 states have internal predecessors, (71), 15 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 15 states have call predecessors, (48), 15 states have call successors, (48) [2024-09-15 20:18:31,986 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 71 transitions. [2024-09-15 20:18:31,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-09-15 20:18:31,987 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:18:31,987 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2024-09-15 20:18:32,004 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-15 20:18:32,188 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:18:32,188 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-15 20:18:32,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:18:32,189 INFO L85 PathProgramCache]: Analyzing trace with hash 235640365, now seen corresponding path program 2 times [2024-09-15 20:18:32,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:18:32,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224262841] [2024-09-15 20:18:32,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:18:32,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:18:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:33,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 20:18:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:33,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 20:18:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:33,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-15 20:18:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:33,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 20:18:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:33,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-15 20:18:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:33,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-15 20:18:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:33,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 20:18:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:33,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-15 20:18:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:33,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-15 20:18:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:33,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-15 20:18:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:33,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 20:18:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:33,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-15 20:18:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:33,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-15 20:18:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:33,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-15 20:18:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:33,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-15 20:18:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:33,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-15 20:18:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:33,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-15 20:18:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:33,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-15 20:18:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:18:33,198 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-15 20:18:33,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:18:33,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224262841] [2024-09-15 20:18:33,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224262841] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:18:33,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405433426] [2024-09-15 20:18:33,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 20:18:33,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:18:33,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:18:33,202 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:18:33,203 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-15 20:18:33,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 20:18:33,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:18:33,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-15 20:18:33,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:18:33,870 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-15 20:18:33,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:18:35,116 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 26 proven. 31 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-15 20:18:35,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405433426] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:18:35,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:18:35,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 31 [2024-09-15 20:18:35,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7351908] [2024-09-15 20:18:35,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:18:35,117 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-15 20:18:35,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:18:35,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-15 20:18:35,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=774, Unknown=0, NotChecked=0, Total=992 [2024-09-15 20:18:35,118 INFO L87 Difference]: Start difference. First operand 54 states and 71 transitions. Second operand has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 32 states have internal predecessors, (79), 17 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 17 states have call predecessors, (51), 17 states have call successors, (51) [2024-09-15 20:18:35,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:18:35,384 INFO L93 Difference]: Finished difference Result 55 states and 71 transitions. [2024-09-15 20:18:35,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-15 20:18:35,384 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 32 states have internal predecessors, (79), 17 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 17 states have call predecessors, (51), 17 states have call successors, (51) Word has length 118 [2024-09-15 20:18:35,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:18:35,385 INFO L225 Difference]: With dead ends: 55 [2024-09-15 20:18:35,385 INFO L226 Difference]: Without dead ends: 0 [2024-09-15 20:18:35,385 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=241, Invalid=881, Unknown=0, NotChecked=0, Total=1122 [2024-09-15 20:18:35,386 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 24 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 20:18:35,386 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 271 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 20:18:35,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-15 20:18:35,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-15 20:18:35,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:18:35,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-15 20:18:35,387 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 118 [2024-09-15 20:18:35,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:18:35,387 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-15 20:18:35,388 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 32 states have internal predecessors, (79), 17 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 17 states have call predecessors, (51), 17 states have call successors, (51) [2024-09-15 20:18:35,388 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-15 20:18:35,388 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-15 20:18:35,390 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION (11 of 12 remaining) [2024-09-15 20:18:35,391 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 12 remaining) [2024-09-15 20:18:35,391 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (9 of 12 remaining) [2024-09-15 20:18:35,391 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONPRE_CONDITION (8 of 12 remaining) [2024-09-15 20:18:35,391 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONPRE_CONDITION (7 of 12 remaining) [2024-09-15 20:18:35,391 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 12 remaining) [2024-09-15 20:18:35,392 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONPRE_CONDITION (5 of 12 remaining) [2024-09-15 20:18:35,392 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONPRE_CONDITION (4 of 12 remaining) [2024-09-15 20:18:35,392 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONPRE_CONDITION (3 of 12 remaining) [2024-09-15 20:18:35,392 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONPRE_CONDITION (2 of 12 remaining) [2024-09-15 20:18:35,392 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 12 remaining) [2024-09-15 20:18:35,392 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION (0 of 12 remaining) [2024-09-15 20:18:35,409 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-15 20:18:35,596 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:18:35,599 INFO L408 BasicCegarLoop]: Path program histogram: [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:18:35,600 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-15 20:18:35,601 INFO L469 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-09-15 20:18:35,602 INFO L470 ceAbstractionStarter]: WitnessConsidered=2 [2024-09-15 20:18:35,602 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 08:18:35 BoogieIcfgContainer [2024-09-15 20:18:35,602 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-15 20:18:35,603 INFO L158 Benchmark]: Toolchain (without parser) took 31569.48ms. Allocated memory was 73.4MB in the beginning and 408.9MB in the end (delta: 335.5MB). Free memory was 52.3MB in the beginning and 287.6MB in the end (delta: -235.3MB). Peak memory consumption was 99.5MB. Max. memory is 16.1GB. [2024-09-15 20:18:35,603 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 52.4MB. Free memory is still 35.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:18:35,603 INFO L158 Benchmark]: Witness Parser took 0.11ms. Allocated memory is still 73.4MB. Free memory is still 54.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:18:35,604 INFO L158 Benchmark]: CACSL2BoogieTranslator took 332.58ms. Allocated memory is still 73.4MB. Free memory was 52.3MB in the beginning and 37.9MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-15 20:18:35,604 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.42ms. Allocated memory is still 73.4MB. Free memory was 37.9MB in the beginning and 35.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 20:18:35,604 INFO L158 Benchmark]: Boogie Preprocessor took 54.35ms. Allocated memory is still 73.4MB. Free memory was 35.9MB in the beginning and 34.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:18:35,604 INFO L158 Benchmark]: RCFGBuilder took 399.53ms. Allocated memory is still 73.4MB. Free memory was 33.8MB in the beginning and 46.2MB in the end (delta: -12.4MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. [2024-09-15 20:18:35,605 INFO L158 Benchmark]: TraceAbstraction took 30732.33ms. Allocated memory was 73.4MB in the beginning and 408.9MB in the end (delta: 335.5MB). Free memory was 45.4MB in the beginning and 287.6MB in the end (delta: -242.2MB). Peak memory consumption was 92.6MB. Max. memory is 16.1GB. [2024-09-15 20:18:35,606 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 52.4MB. Free memory is still 35.6MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.11ms. Allocated memory is still 73.4MB. Free memory is still 54.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 332.58ms. Allocated memory is still 73.4MB. Free memory was 52.3MB in the beginning and 37.9MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.42ms. Allocated memory is still 73.4MB. Free memory was 37.9MB in the beginning and 35.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.35ms. Allocated memory is still 73.4MB. Free memory was 35.9MB in the beginning and 34.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 399.53ms. Allocated memory is still 73.4MB. Free memory was 33.8MB in the beginning and 46.2MB in the end (delta: -12.4MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. * TraceAbstraction took 30732.33ms. Allocated memory was 73.4MB in the beginning and 408.9MB in the end (delta: 335.5MB). Free memory was 45.4MB in the beginning and 287.6MB in the end (delta: -242.2MB). Peak memory consumption was 92.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 11]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - PositiveResult [Line: 34]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 44]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 14]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 36 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 30.7s, OverallIterations: 20, TraceHistogramMax: 18, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 419 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 349 mSDsluCounter, 3107 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2278 mSDsCounter, 351 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3720 IncrementalHoareTripleChecker+Invalid, 4071 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 351 mSolverCounterUnsat, 829 mSDtfsCounter, 3720 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2301 GetRequests, 2053 SyntacticMatches, 8 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1146 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=13, InterpolantAutomatonStates: 168, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 20 MinimizatonAttempts, 164 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 22.1s InterpolantComputationTime, 2064 NumberOfCodeBlocks, 1992 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 2809 ConstructedInterpolants, 0 QuantifiedInterpolants, 26013 SizeOfPredicates, 18 NumberOfNonLiveVariables, 2592 ConjunctsInSsa, 325 ConjunctsInUnsatCore, 44 InterpolantComputations, 9 PerfectInterpolantSequences, 10263/11024 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-15 20:18:35,644 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE