./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/hard-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/nla-digbench/hard-ll.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G ! call(reach_error())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '8c31bebbbf1ab8c6e57b91fec88eba145fb9c1b52fce25f48cae26620a3d8ba6'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/hard-ll.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8c31bebbbf1ab8c6e57b91fec88eba145fb9c1b52fce25f48cae26620a3d8ba6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 22:46:43,433 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 22:46:43,561 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 22:46:43,566 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 22:46:43,567 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 22:46:43,591 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 22:46:43,592 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 22:46:43,592 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 22:46:43,594 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 22:46:43,594 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 22:46:43,594 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 22:46:43,594 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 22:46:43,595 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 22:46:43,595 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 22:46:43,595 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 22:46:43,595 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 22:46:43,595 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 22:46:43,596 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 22:46:43,596 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 22:46:43,596 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 22:46:43,596 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 22:46:43,596 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 22:46:43,596 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 22:46:43,596 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 22:46:43,597 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 22:46:43,597 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 22:46:43,597 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 22:46:43,597 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 22:46:43,597 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 22:46:43,597 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 22:46:43,597 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 22:46:43,598 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 22:46:43,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 22:46:43,598 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 22:46:43,598 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 22:46:43,598 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 22:46:43,598 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 22:46:43,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 22:46:43,598 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 22:46:43,599 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 22:46:43,599 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 22:46:43,599 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 22:46:43,599 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c31bebbbf1ab8c6e57b91fec88eba145fb9c1b52fce25f48cae26620a3d8ba6 [2024-11-06 22:46:43,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 22:46:43,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 22:46:43,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 22:46:43,858 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 22:46:43,858 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 22:46:43,859 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/hard-ll.c [2024-11-06 22:46:45,093 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 22:46:45,315 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 22:46:45,317 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench/hard-ll.c [2024-11-06 22:46:45,323 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/528fd6688/ff26c6f47e9d4b17929cdd25a7470c55/FLAG658efbd4b [2024-11-06 22:46:45,342 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/528fd6688/ff26c6f47e9d4b17929cdd25a7470c55 [2024-11-06 22:46:45,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 22:46:45,345 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 22:46:45,347 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 22:46:45,347 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 22:46:45,350 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 22:46:45,351 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:45" (1/1) ... [2024-11-06 22:46:45,352 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@200aedb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:45, skipping insertion in model container [2024-11-06 22:46:45,354 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:45" (1/1) ... [2024-11-06 22:46:45,366 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 22:46:45,490 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench/hard-ll.c[538,551] [2024-11-06 22:46:45,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 22:46:45,519 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 22:46:45,528 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench/hard-ll.c[538,551] [2024-11-06 22:46:45,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 22:46:45,550 INFO L204 MainTranslator]: Completed translation [2024-11-06 22:46:45,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:45 WrapperNode [2024-11-06 22:46:45,552 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 22:46:45,552 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 22:46:45,553 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 22:46:45,553 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 22:46:45,559 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:45" (1/1) ... [2024-11-06 22:46:45,567 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:45" (1/1) ... [2024-11-06 22:46:45,587 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57 [2024-11-06 22:46:45,588 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 22:46:45,588 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 22:46:45,589 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 22:46:45,589 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 22:46:45,597 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:45" (1/1) ... [2024-11-06 22:46:45,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:45" (1/1) ... [2024-11-06 22:46:45,600 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:45" (1/1) ... [2024-11-06 22:46:45,610 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-06 22:46:45,614 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:45" (1/1) ... [2024-11-06 22:46:45,614 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:45" (1/1) ... [2024-11-06 22:46:45,617 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:45" (1/1) ... [2024-11-06 22:46:45,622 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:45" (1/1) ... [2024-11-06 22:46:45,627 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:45" (1/1) ... [2024-11-06 22:46:45,627 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:45" (1/1) ... [2024-11-06 22:46:45,628 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 22:46:45,629 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 22:46:45,633 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 22:46:45,633 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 22:46:45,634 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:45" (1/1) ... [2024-11-06 22:46:45,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 22:46:45,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:46:45,668 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-06 22:46:45,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-06 22:46:45,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 22:46:45,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 22:46:45,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 22:46:45,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 22:46:45,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-06 22:46:45,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-06 22:46:45,751 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 22:46:45,753 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 22:46:45,872 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-06 22:46:45,874 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 22:46:45,880 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 22:46:45,881 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-06 22:46:45,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:45 BoogieIcfgContainer [2024-11-06 22:46:45,882 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 22:46:45,884 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 22:46:45,885 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 22:46:45,889 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 22:46:45,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:46:45" (1/3) ... [2024-11-06 22:46:45,890 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c5fc37f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:45, skipping insertion in model container [2024-11-06 22:46:45,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:45" (2/3) ... [2024-11-06 22:46:45,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c5fc37f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:45, skipping insertion in model container [2024-11-06 22:46:45,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:45" (3/3) ... [2024-11-06 22:46:45,892 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll.c [2024-11-06 22:46:45,905 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 22:46:45,905 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 22:46:45,946 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 22:46:45,955 INFO L333 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=LoopHeads, 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;@6087f00a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 22:46:45,955 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 22:46:45,959 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 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) [2024-11-06 22:46:45,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-06 22:46:45,964 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:46:45,964 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:46:45,965 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:46:45,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:46:45,968 INFO L85 PathProgramCache]: Analyzing trace with hash -586848446, now seen corresponding path program 1 times [2024-11-06 22:46:45,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:46:45,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708398613] [2024-11-06 22:46:45,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:46:45,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:46:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:46,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:46:46,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:46:46,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708398613] [2024-11-06 22:46:46,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708398613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:46:46,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:46:46,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 22:46:46,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441519799] [2024-11-06 22:46:46,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:46:46,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-06 22:46:46,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:46:46,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-06 22:46:46,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 22:46:46,091 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 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 4.0) internal successors, (8), 2 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) [2024-11-06 22:46:46,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:46:46,106 INFO L93 Difference]: Finished difference Result 49 states and 83 transitions. [2024-11-06 22:46:46,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-06 22:46:46,107 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 [2024-11-06 22:46:46,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:46:46,110 INFO L225 Difference]: With dead ends: 49 [2024-11-06 22:46:46,110 INFO L226 Difference]: Without dead ends: 22 [2024-11-06 22:46:46,112 INFO L431 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 [2024-11-06 22:46:46,115 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:46:46,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:46:46,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-06 22:46:46,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-06 22:46:46,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 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) [2024-11-06 22:46:46,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2024-11-06 22:46:46,142 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 9 [2024-11-06 22:46:46,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:46:46,142 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2024-11-06 22:46:46,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2024-11-06 22:46:46,142 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2024-11-06 22:46:46,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-06 22:46:46,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:46:46,144 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:46:46,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 22:46:46,144 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:46:46,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:46:46,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1188158916, now seen corresponding path program 1 times [2024-11-06 22:46:46,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:46:46,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478148285] [2024-11-06 22:46:46,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:46:46,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:46:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:46,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:46:46,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:46:46,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478148285] [2024-11-06 22:46:46,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478148285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:46:46,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:46:46,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:46:46,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030420457] [2024-11-06 22:46:46,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:46:46,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:46:46,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:46:46,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:46:46,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:46:46,296 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 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) [2024-11-06 22:46:46,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:46:46,354 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2024-11-06 22:46:46,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:46:46,354 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 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 [2024-11-06 22:46:46,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:46:46,355 INFO L225 Difference]: With dead ends: 35 [2024-11-06 22:46:46,355 INFO L226 Difference]: Without dead ends: 33 [2024-11-06 22:46:46,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-06 22:46:46,356 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 9 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 90 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 [2024-11-06 22:46:46,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 90 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:46:46,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-06 22:46:46,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2024-11-06 22:46:46,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-06 22:46:46,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2024-11-06 22:46:46,366 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 9 [2024-11-06 22:46:46,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:46:46,367 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2024-11-06 22:46:46,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 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) [2024-11-06 22:46:46,367 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2024-11-06 22:46:46,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-06 22:46:46,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:46:46,368 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:46:46,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 22:46:46,368 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:46:46,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:46:46,369 INFO L85 PathProgramCache]: Analyzing trace with hash -697944935, now seen corresponding path program 1 times [2024-11-06 22:46:46,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:46:46,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912450498] [2024-11-06 22:46:46,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:46:46,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:46:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:46,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-06 22:46:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:46,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:46:46,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:46:46,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912450498] [2024-11-06 22:46:46,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912450498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:46:46,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:46:46,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:46:46,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784782495] [2024-11-06 22:46:46,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:46:46,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:46:46,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:46:46,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:46:46,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:46:46,530 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-06 22:46:46,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:46:46,604 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2024-11-06 22:46:46,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:46:46,604 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-11-06 22:46:46,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:46:46,605 INFO L225 Difference]: With dead ends: 39 [2024-11-06 22:46:46,605 INFO L226 Difference]: Without dead ends: 37 [2024-11-06 22:46:46,606 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-06 22:46:46,607 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 9 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:46:46,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 87 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:46:46,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-06 22:46:46,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2024-11-06 22:46:46,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-06 22:46:46,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2024-11-06 22:46:46,616 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 14 [2024-11-06 22:46:46,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:46:46,616 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-11-06 22:46:46,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-06 22:46:46,617 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2024-11-06 22:46:46,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-06 22:46:46,617 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:46:46,617 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:46:46,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 22:46:46,618 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:46:46,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:46:46,618 INFO L85 PathProgramCache]: Analyzing trace with hash 262992548, now seen corresponding path program 1 times [2024-11-06 22:46:46,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:46:46,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296916945] [2024-11-06 22:46:46,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:46:46,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:46:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:46:46,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1761260350] [2024-11-06 22:46:46,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:46:46,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:46:46,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:46:46,647 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:46:46,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-06 22:46:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:46,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 22:46:46,697 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:46:46,787 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 22:46:46,788 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 22:46:46,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:46:46,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296916945] [2024-11-06 22:46:46,791 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:46:46,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761260350] [2024-11-06 22:46:46,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761260350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:46:46,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:46:46,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:46:46,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276614270] [2024-11-06 22:46:46,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:46:46,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:46:46,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:46:46,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:46:46,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:46:46,792 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 22:46:46,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:46:46,873 INFO L93 Difference]: Finished difference Result 56 states and 73 transitions. [2024-11-06 22:46:46,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:46:46,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2024-11-06 22:46:46,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:46:46,875 INFO L225 Difference]: With dead ends: 56 [2024-11-06 22:46:46,876 INFO L226 Difference]: Without dead ends: 43 [2024-11-06 22:46:46,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-06 22:46:46,877 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 5 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:46:46,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 89 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:46:46,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-06 22:46:46,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-11-06 22:46:46,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 27 states have internal predecessors, (31), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-06 22:46:46,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2024-11-06 22:46:46,895 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 19 [2024-11-06 22:46:46,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:46:46,895 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2024-11-06 22:46:46,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 22:46:46,896 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2024-11-06 22:46:46,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-06 22:46:46,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:46:46,897 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:46:46,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-06 22:46:47,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:46:47,098 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:46:47,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:46:47,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1807142342, now seen corresponding path program 1 times [2024-11-06 22:46:47,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:46:47,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087206005] [2024-11-06 22:46:47,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:46:47,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:46:47,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:46:47,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1714074506] [2024-11-06 22:46:47,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:46:47,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:46:47,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:46:47,131 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:46:47,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-06 22:46:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:47,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-06 22:46:47,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:46:47,306 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 22:46:47,306 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:46:47,524 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 22:46:47,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:46:47,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087206005] [2024-11-06 22:46:47,525 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:46:47,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714074506] [2024-11-06 22:46:47,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714074506] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:46:47,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 22:46:47,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-11-06 22:46:47,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362968064] [2024-11-06 22:46:47,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 22:46:47,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-06 22:46:47,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:46:47,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-06 22:46:47,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-06 22:46:47,526 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 22:46:47,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:46:47,646 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2024-11-06 22:46:47,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-06 22:46:47,647 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2024-11-06 22:46:47,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:46:47,649 INFO L225 Difference]: With dead ends: 58 [2024-11-06 22:46:47,650 INFO L226 Difference]: Without dead ends: 56 [2024-11-06 22:46:47,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-06 22:46:47,652 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 15 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:46:47,654 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 87 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:46:47,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-06 22:46:47,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2024-11-06 22:46:47,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 32 states have (on average 1.21875) internal successors, (39), 34 states have internal predecessors, (39), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-06 22:46:47,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2024-11-06 22:46:47,668 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 26 [2024-11-06 22:46:47,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:46:47,668 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2024-11-06 22:46:47,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 22:46:47,668 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2024-11-06 22:46:47,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-06 22:46:47,671 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:46:47,671 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:46:47,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-06 22:46:47,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:46:47,872 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:46:47,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:46:47,872 INFO L85 PathProgramCache]: Analyzing trace with hash -979933353, now seen corresponding path program 1 times [2024-11-06 22:46:47,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:46:47,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356275687] [2024-11-06 22:46:47,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:46:47,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:46:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:46:47,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [478398516] [2024-11-06 22:46:47,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:46:47,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:46:47,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:46:47,910 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:46:47,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-06 22:46:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:47,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-06 22:46:47,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:46:48,065 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-06 22:46:48,065 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:46:48,160 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-06 22:46:48,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:46:48,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356275687] [2024-11-06 22:46:48,161 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:46:48,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478398516] [2024-11-06 22:46:48,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478398516] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-06 22:46:48,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 22:46:48,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-11-06 22:46:48,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661886683] [2024-11-06 22:46:48,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:46:48,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:46:48,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:46:48,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:46:48,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-06 22:46:48,164 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-06 22:46:48,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:46:48,256 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2024-11-06 22:46:48,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:46:48,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2024-11-06 22:46:48,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:46:48,258 INFO L225 Difference]: With dead ends: 63 [2024-11-06 22:46:48,259 INFO L226 Difference]: Without dead ends: 61 [2024-11-06 22:46:48,259 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-06 22:46:48,260 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 5 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:46:48,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 82 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:46:48,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-06 22:46:48,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2024-11-06 22:46:48,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 39 states have internal predecessors, (43), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-06 22:46:48,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 76 transitions. [2024-11-06 22:46:48,283 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 76 transitions. Word has length 36 [2024-11-06 22:46:48,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:46:48,283 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 76 transitions. [2024-11-06 22:46:48,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-06 22:46:48,283 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 76 transitions. [2024-11-06 22:46:48,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-06 22:46:48,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:46:48,284 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:46:48,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-06 22:46:48,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:46:48,485 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:46:48,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:46:48,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1438911711, now seen corresponding path program 1 times [2024-11-06 22:46:48,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:46:48,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287347104] [2024-11-06 22:46:48,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:46:48,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:46:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:48,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-06 22:46:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:48,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-06 22:46:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:48,659 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 22:46:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:48,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-06 22:46:48,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:48,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-06 22:46:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:48,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-06 22:46:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:48,681 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-06 22:46:48,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:46:48,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287347104] [2024-11-06 22:46:48,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287347104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:46:48,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:46:48,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:46:48,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405061405] [2024-11-06 22:46:48,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:46:48,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:46:48,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:46:48,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:46:48,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:46:48,683 INFO L87 Difference]: Start difference. First operand 60 states and 76 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-06 22:46:48,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:46:48,736 INFO L93 Difference]: Finished difference Result 68 states and 84 transitions. [2024-11-06 22:46:48,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:46:48,737 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 42 [2024-11-06 22:46:48,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:46:48,738 INFO L225 Difference]: With dead ends: 68 [2024-11-06 22:46:48,738 INFO L226 Difference]: Without dead ends: 56 [2024-11-06 22:46:48,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-06 22:46:48,739 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:46:48,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 99 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:46:48,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-06 22:46:48,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-06 22:46:48,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 37 states have internal predecessors, (40), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-06 22:46:48,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2024-11-06 22:46:48,756 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 42 [2024-11-06 22:46:48,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:46:48,757 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2024-11-06 22:46:48,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-06 22:46:48,757 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2024-11-06 22:46:48,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-06 22:46:48,758 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:46:48,758 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:46:48,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-06 22:46:48,759 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:46:48,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:46:48,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1034157389, now seen corresponding path program 1 times [2024-11-06 22:46:48,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:46:48,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58557734] [2024-11-06 22:46:48,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:46:48,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:46:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:46:48,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619054552] [2024-11-06 22:46:48,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:46:48,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:46:48,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:46:48,803 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:46:48,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-06 22:46:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:48,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-06 22:46:48,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:46:49,457 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-06 22:46:49,458 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:46:51,084 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-06 22:46:51,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:46:51,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58557734] [2024-11-06 22:46:51,085 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:46:51,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619054552] [2024-11-06 22:46:51,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619054552] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:46:51,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 22:46:51,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2024-11-06 22:46:51,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646467142] [2024-11-06 22:46:51,086 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 22:46:51,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-06 22:46:51,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:46:51,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-06 22:46:51,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-11-06 22:46:51,089 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 16 states have internal predecessors, (31), 8 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-06 22:46:53,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-06 22:46:55,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-06 22:46:55,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:46:55,561 INFO L93 Difference]: Finished difference Result 143 states and 198 transitions. [2024-11-06 22:46:55,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-06 22:46:55,562 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 16 states have internal predecessors, (31), 8 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 56 [2024-11-06 22:46:55,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:46:55,564 INFO L225 Difference]: With dead ends: 143 [2024-11-06 22:46:55,564 INFO L226 Difference]: Without dead ends: 120 [2024-11-06 22:46:55,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=152, Invalid=550, Unknown=0, NotChecked=0, Total=702 [2024-11-06 22:46:55,565 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 74 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-06 22:46:55,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 182 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-06 22:46:55,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-06 22:46:55,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 95. [2024-11-06 22:46:55,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 58 states have (on average 1.1896551724137931) internal successors, (69), 62 states have internal predecessors, (69), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-06 22:46:55,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 120 transitions. [2024-11-06 22:46:55,597 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 120 transitions. Word has length 56 [2024-11-06 22:46:55,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:46:55,599 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 120 transitions. [2024-11-06 22:46:55,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 16 states have internal predecessors, (31), 8 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-06 22:46:55,599 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 120 transitions. [2024-11-06 22:46:55,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-06 22:46:55,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:46:55,603 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:46:55,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-06 22:46:55,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-06 22:46:55,804 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:46:55,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:46:55,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1199454569, now seen corresponding path program 1 times [2024-11-06 22:46:55,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:46:55,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618092921] [2024-11-06 22:46:55,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:46:55,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:46:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:46:55,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1361149856] [2024-11-06 22:46:55,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:46:55,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:46:55,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:46:55,831 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:46:55,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-06 22:46:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:55,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-06 22:46:55,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:46:56,305 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-06 22:46:56,305 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:46:56,977 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-06 22:46:56,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:46:56,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618092921] [2024-11-06 22:46:56,977 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:46:56,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361149856] [2024-11-06 22:46:56,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361149856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:46:56,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 22:46:56,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2024-11-06 22:46:56,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829380898] [2024-11-06 22:46:56,978 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 22:46:56,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-06 22:46:56,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:46:56,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-06 22:46:56,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-06 22:46:56,981 INFO L87 Difference]: Start difference. First operand 95 states and 120 transitions. Second operand has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 17 states have internal predecessors, (33), 10 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2024-11-06 22:46:57,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:46:57,402 INFO L93 Difference]: Finished difference Result 135 states and 168 transitions. [2024-11-06 22:46:57,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-06 22:46:57,403 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 17 states have internal predecessors, (33), 10 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) Word has length 67 [2024-11-06 22:46:57,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:46:57,404 INFO L225 Difference]: With dead ends: 135 [2024-11-06 22:46:57,406 INFO L226 Difference]: Without dead ends: 101 [2024-11-06 22:46:57,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2024-11-06 22:46:57,408 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 25 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:46:57,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 289 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:46:57,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-06 22:46:57,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 87. [2024-11-06 22:46:57,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 56 states have internal predecessors, (63), 22 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-06 22:46:57,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 106 transitions. [2024-11-06 22:46:57,434 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 106 transitions. Word has length 67 [2024-11-06 22:46:57,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:46:57,434 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 106 transitions. [2024-11-06 22:46:57,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 17 states have internal predecessors, (33), 10 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2024-11-06 22:46:57,434 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 106 transitions. [2024-11-06 22:46:57,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-06 22:46:57,435 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:46:57,436 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:46:57,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-06 22:46:57,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:46:57,636 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:46:57,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:46:57,637 INFO L85 PathProgramCache]: Analyzing trace with hash -843815949, now seen corresponding path program 2 times [2024-11-06 22:46:57,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:46:57,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357240992] [2024-11-06 22:46:57,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:46:57,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:46:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:57,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-06 22:46:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:57,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-06 22:46:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:57,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 22:46:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:57,808 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-06 22:46:57,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:57,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-06 22:46:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:57,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-06 22:46:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:57,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 22:46:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:57,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-06 22:46:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:57,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-06 22:46:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:57,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-06 22:46:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:57,838 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-06 22:46:57,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:46:57,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357240992] [2024-11-06 22:46:57,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357240992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:46:57,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321448214] [2024-11-06 22:46:57,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 22:46:57,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:46:57,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:46:57,841 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:46:57,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-06 22:46:57,893 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 22:46:57,893 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:46:57,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 22:46:57,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:46:57,923 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-06 22:46:57,923 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:46:57,999 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-06 22:46:57,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321448214] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:46:57,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:46:57,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-11-06 22:46:57,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208136615] [2024-11-06 22:46:57,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:46:58,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:46:58,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:46:58,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:46:58,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:46:58,001 INFO L87 Difference]: Start difference. First operand 87 states and 106 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-06 22:46:58,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:46:58,052 INFO L93 Difference]: Finished difference Result 114 states and 143 transitions. [2024-11-06 22:46:58,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 22:46:58,052 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 69 [2024-11-06 22:46:58,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:46:58,055 INFO L225 Difference]: With dead ends: 114 [2024-11-06 22:46:58,055 INFO L226 Difference]: Without dead ends: 92 [2024-11-06 22:46:58,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:46:58,055 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:46:58,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:46:58,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-06 22:46:58,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-06 22:46:58,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 59 states have internal predecessors, (66), 24 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-06 22:46:58,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 113 transitions. [2024-11-06 22:46:58,081 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 113 transitions. Word has length 69 [2024-11-06 22:46:58,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:46:58,081 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 113 transitions. [2024-11-06 22:46:58,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-06 22:46:58,081 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 113 transitions. [2024-11-06 22:46:58,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-06 22:46:58,083 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:46:58,083 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:46:58,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-06 22:46:58,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-06 22:46:58,283 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:46:58,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:46:58,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1728532070, now seen corresponding path program 1 times [2024-11-06 22:46:58,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:46:58,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556647600] [2024-11-06 22:46:58,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:46:58,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:46:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:58,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-06 22:46:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:58,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-06 22:46:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:58,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 22:46:58,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:58,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-06 22:46:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:58,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-06 22:46:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:58,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-06 22:46:58,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:58,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 22:46:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:58,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-06 22:46:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:58,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-06 22:46:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:58,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-06 22:46:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:58,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-06 22:46:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:58,581 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-06 22:46:58,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:46:58,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556647600] [2024-11-06 22:46:58,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556647600] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:46:58,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075070647] [2024-11-06 22:46:58,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:46:58,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:46:58,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:46:58,584 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:46:58,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-06 22:46:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:58,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-06 22:46:58,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:46:58,949 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-06 22:46:58,949 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:46:59,277 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-06 22:46:59,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075070647] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:46:59,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:46:59,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 8] total 17 [2024-11-06 22:46:59,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735194830] [2024-11-06 22:46:59,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:46:59,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-06 22:46:59,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:46:59,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-06 22:46:59,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-11-06 22:46:59,279 INFO L87 Difference]: Start difference. First operand 92 states and 113 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 15 states have internal predecessors, (39), 9 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 9 states have call predecessors, (28), 9 states have call successors, (28) [2024-11-06 22:46:59,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:46:59,562 INFO L93 Difference]: Finished difference Result 107 states and 133 transitions. [2024-11-06 22:46:59,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-06 22:46:59,562 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 15 states have internal predecessors, (39), 9 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 9 states have call predecessors, (28), 9 states have call successors, (28) Word has length 72 [2024-11-06 22:46:59,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:46:59,563 INFO L225 Difference]: With dead ends: 107 [2024-11-06 22:46:59,563 INFO L226 Difference]: Without dead ends: 90 [2024-11-06 22:46:59,563 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2024-11-06 22:46:59,564 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 27 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:46:59,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 290 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:46:59,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-06 22:46:59,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 83. [2024-11-06 22:46:59,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 54 states have internal predecessors, (60), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-06 22:46:59,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 99 transitions. [2024-11-06 22:46:59,587 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 99 transitions. Word has length 72 [2024-11-06 22:46:59,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:46:59,588 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 99 transitions. [2024-11-06 22:46:59,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 15 states have internal predecessors, (39), 9 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 9 states have call predecessors, (28), 9 states have call successors, (28) [2024-11-06 22:46:59,588 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 99 transitions. [2024-11-06 22:46:59,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-06 22:46:59,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:46:59,591 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:46:59,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-06 22:46:59,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:46:59,792 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:46:59,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:46:59,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1842513023, now seen corresponding path program 1 times [2024-11-06 22:46:59,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:46:59,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998509282] [2024-11-06 22:46:59,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:46:59,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:46:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:59,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-06 22:46:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:59,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-06 22:46:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:59,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 22:46:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:59,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-06 22:46:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:59,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-06 22:46:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:59,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-06 22:46:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:59,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 22:46:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:59,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-06 22:46:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:59,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-06 22:46:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:59,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-06 22:46:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:59,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-06 22:46:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:59,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-06 22:46:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:59,919 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-06 22:46:59,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:46:59,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998509282] [2024-11-06 22:46:59,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998509282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:46:59,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461130270] [2024-11-06 22:46:59,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:46:59,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:46:59,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:46:59,922 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:46:59,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-06 22:46:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:46:59,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 22:46:59,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:47:00,026 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-06 22:47:00,027 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 22:47:00,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461130270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:47:00,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 22:47:00,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2024-11-06 22:47:00,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903457418] [2024-11-06 22:47:00,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:47:00,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:47:00,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:47:00,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:47:00,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-06 22:47:00,028 INFO L87 Difference]: Start difference. First operand 83 states and 99 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-06 22:47:00,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:47:00,085 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2024-11-06 22:47:00,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:47:00,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 76 [2024-11-06 22:47:00,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:47:00,087 INFO L225 Difference]: With dead ends: 90 [2024-11-06 22:47:00,089 INFO L226 Difference]: Without dead ends: 78 [2024-11-06 22:47:00,089 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-06 22:47:00,090 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 5 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:47:00,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 110 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:47:00,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-06 22:47:00,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-06 22:47:00,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 50 states have internal predecessors, (55), 19 states have call successors, (19), 9 states have call predecessors, (19), 9 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-06 22:47:00,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2024-11-06 22:47:00,109 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 76 [2024-11-06 22:47:00,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:47:00,110 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2024-11-06 22:47:00,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-06 22:47:00,110 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2024-11-06 22:47:00,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-06 22:47:00,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:47:00,111 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:47:00,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-06 22:47:00,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:47:00,312 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:47:00,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:47:00,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1193302554, now seen corresponding path program 3 times [2024-11-06 22:47:00,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:47:00,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725225647] [2024-11-06 22:47:00,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:47:00,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:47:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:47:00,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1618791968] [2024-11-06 22:47:00,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 22:47:00,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:47:00,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:47:00,343 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:47:00,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-06 22:47:00,403 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-06 22:47:00,403 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:47:00,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-06 22:47:00,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:47:00,829 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 37 proven. 49 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-06 22:47:00,829 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:47:12,796 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 37 proven. 49 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-06 22:47:12,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:47:12,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725225647] [2024-11-06 22:47:12,797 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:47:12,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618791968] [2024-11-06 22:47:12,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618791968] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:47:12,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 22:47:12,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2024-11-06 22:47:12,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431099938] [2024-11-06 22:47:12,797 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 22:47:12,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-06 22:47:12,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:47:12,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-06 22:47:12,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-11-06 22:47:12,799 INFO L87 Difference]: Start difference. First operand 78 states and 92 transitions. Second operand has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 states have internal predecessors, (44), 11 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) [2024-11-06 22:47:20,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:47:20,049 INFO L93 Difference]: Finished difference Result 152 states and 197 transitions. [2024-11-06 22:47:20,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-06 22:47:20,049 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 states have internal predecessors, (44), 11 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) Word has length 86 [2024-11-06 22:47:20,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:47:20,051 INFO L225 Difference]: With dead ends: 152 [2024-11-06 22:47:20,051 INFO L226 Difference]: Without dead ends: 130 [2024-11-06 22:47:20,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=142, Invalid=614, Unknown=0, NotChecked=0, Total=756 [2024-11-06 22:47:20,052 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 48 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-06 22:47:20,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 325 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-06 22:47:20,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-06 22:47:20,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 118. [2024-11-06 22:47:20,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 72 states have (on average 1.125) internal successors, (81), 76 states have internal predecessors, (81), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-06 22:47:20,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 146 transitions. [2024-11-06 22:47:20,088 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 146 transitions. Word has length 86 [2024-11-06 22:47:20,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:47:20,088 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 146 transitions. [2024-11-06 22:47:20,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 states have internal predecessors, (44), 11 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) [2024-11-06 22:47:20,088 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 146 transitions. [2024-11-06 22:47:20,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-06 22:47:20,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:47:20,089 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:47:20,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-06 22:47:20,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:47:20,290 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:47:20,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:47:20,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1231859808, now seen corresponding path program 1 times [2024-11-06 22:47:20,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:47:20,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534714985] [2024-11-06 22:47:20,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:47:20,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:47:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:47:20,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1705953337] [2024-11-06 22:47:20,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:47:20,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:47:20,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:47:20,331 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:47:20,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-06 22:47:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:20,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-06 22:47:20,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:47:21,115 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 64 proven. 72 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2024-11-06 22:47:21,116 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:47:23,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:47:23,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534714985] [2024-11-06 22:47:23,088 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:47:23,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705953337] [2024-11-06 22:47:23,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705953337] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:47:23,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-06 22:47:23,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-06 22:47:23,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139961246] [2024-11-06 22:47:23,089 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-06 22:47:23,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-06 22:47:23,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:47:23,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-06 22:47:23,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2024-11-06 22:47:23,090 INFO L87 Difference]: Start difference. First operand 118 states and 146 transitions. Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 8 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) [2024-11-06 22:47:23,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:47:23,471 INFO L93 Difference]: Finished difference Result 142 states and 166 transitions. [2024-11-06 22:47:23,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-06 22:47:23,472 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 8 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) Word has length 97 [2024-11-06 22:47:23,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:47:23,473 INFO L225 Difference]: With dead ends: 142 [2024-11-06 22:47:23,473 INFO L226 Difference]: Without dead ends: 140 [2024-11-06 22:47:23,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=145, Invalid=557, Unknown=0, NotChecked=0, Total=702 [2024-11-06 22:47:23,474 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 22:47:23,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 305 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 22:47:23,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-06 22:47:23,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2024-11-06 22:47:23,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 87 states have (on average 1.103448275862069) internal successors, (96), 92 states have internal predecessors, (96), 34 states have call successors, (34), 17 states have call predecessors, (34), 17 states have return successors, (33), 29 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-06 22:47:23,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 163 transitions. [2024-11-06 22:47:23,507 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 163 transitions. Word has length 97 [2024-11-06 22:47:23,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:47:23,508 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 163 transitions. [2024-11-06 22:47:23,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 8 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) [2024-11-06 22:47:23,508 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 163 transitions. [2024-11-06 22:47:23,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-06 22:47:23,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:47:23,509 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:47:23,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-06 22:47:23,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-06 22:47:23,710 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:47:23,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:47:23,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1474759586, now seen corresponding path program 2 times [2024-11-06 22:47:23,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:47:23,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747828710] [2024-11-06 22:47:23,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:47:23,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:47:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:47:23,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [159744054] [2024-11-06 22:47:23,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 22:47:23,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:47:23,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:47:23,742 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:47:23,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-06 22:47:23,810 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 22:47:23,811 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:47:23,812 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-06 22:47:23,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:47:24,521 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 67 proven. 69 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2024-11-06 22:47:24,521 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:47:25,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:47:25,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747828710] [2024-11-06 22:47:25,472 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:47:25,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159744054] [2024-11-06 22:47:25,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159744054] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:47:25,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-06 22:47:25,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-06 22:47:25,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953815558] [2024-11-06 22:47:25,472 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-06 22:47:25,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-06 22:47:25,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:47:25,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-06 22:47:25,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2024-11-06 22:47:25,473 INFO L87 Difference]: Start difference. First operand 139 states and 163 transitions. Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 8 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) [2024-11-06 22:47:25,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:47:25,950 INFO L93 Difference]: Finished difference Result 152 states and 179 transitions. [2024-11-06 22:47:25,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-06 22:47:25,951 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 8 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) Word has length 97 [2024-11-06 22:47:25,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:47:25,952 INFO L225 Difference]: With dead ends: 152 [2024-11-06 22:47:25,952 INFO L226 Difference]: Without dead ends: 136 [2024-11-06 22:47:25,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2024-11-06 22:47:25,953 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 22:47:25,953 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 451 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 22:47:25,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-06 22:47:25,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2024-11-06 22:47:25,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 84 states have (on average 1.1071428571428572) internal successors, (93), 89 states have internal predecessors, (93), 34 states have call successors, (34), 16 states have call predecessors, (34), 16 states have return successors, (33), 29 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-06 22:47:25,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 160 transitions. [2024-11-06 22:47:25,987 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 160 transitions. Word has length 97 [2024-11-06 22:47:25,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:47:25,987 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 160 transitions. [2024-11-06 22:47:25,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 8 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) [2024-11-06 22:47:25,987 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 160 transitions. [2024-11-06 22:47:25,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-06 22:47:25,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:47:25,988 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:47:26,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-06 22:47:26,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-06 22:47:26,189 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:47:26,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:47:26,189 INFO L85 PathProgramCache]: Analyzing trace with hash 876035066, now seen corresponding path program 4 times [2024-11-06 22:47:26,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:47:26,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760498895] [2024-11-06 22:47:26,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:47:26,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:47:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:26,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-06 22:47:26,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:26,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-06 22:47:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:26,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 22:47:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:26,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-06 22:47:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:26,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-06 22:47:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:26,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-06 22:47:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:26,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 22:47:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:26,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-06 22:47:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:26,436 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-06 22:47:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:26,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-06 22:47:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:26,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-06 22:47:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:26,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-06 22:47:26,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:26,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-06 22:47:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:26,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-06 22:47:26,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:26,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-06 22:47:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:26,461 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 38 proven. 28 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-06 22:47:26,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:47:26,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760498895] [2024-11-06 22:47:26,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760498895] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:47:26,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351612922] [2024-11-06 22:47:26,461 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 22:47:26,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:47:26,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:47:26,465 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:47:26,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-06 22:47:26,533 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 22:47:26,533 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:47:26,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-06 22:47:26,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:47:26,574 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 38 proven. 28 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-06 22:47:26,575 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:47:26,749 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 43 proven. 23 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-06 22:47:26,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351612922] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:47:26,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:47:26,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-06 22:47:26,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324313461] [2024-11-06 22:47:26,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:47:26,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 22:47:26,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:47:26,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 22:47:26,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-06 22:47:26,751 INFO L87 Difference]: Start difference. First operand 135 states and 160 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 6 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) [2024-11-06 22:47:26,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:47:26,853 INFO L93 Difference]: Finished difference Result 154 states and 183 transitions. [2024-11-06 22:47:26,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:47:26,854 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 6 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) Word has length 99 [2024-11-06 22:47:26,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:47:26,855 INFO L225 Difference]: With dead ends: 154 [2024-11-06 22:47:26,855 INFO L226 Difference]: Without dead ends: 135 [2024-11-06 22:47:26,856 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-06 22:47:26,856 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:47:26,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 146 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:47:26,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-06 22:47:26,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2024-11-06 22:47:26,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 84 states have (on average 1.0952380952380953) internal successors, (92), 89 states have internal predecessors, (92), 34 states have call successors, (34), 16 states have call predecessors, (34), 16 states have return successors, (33), 29 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-06 22:47:26,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 159 transitions. [2024-11-06 22:47:26,892 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 159 transitions. Word has length 99 [2024-11-06 22:47:26,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:47:26,892 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 159 transitions. [2024-11-06 22:47:26,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 6 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) [2024-11-06 22:47:26,892 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 159 transitions. [2024-11-06 22:47:26,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-06 22:47:26,893 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:47:26,893 INFO L215 NwaCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:47:26,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-06 22:47:27,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:47:27,094 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:47:27,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:47:27,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1149721345, now seen corresponding path program 2 times [2024-11-06 22:47:27,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:47:27,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191874864] [2024-11-06 22:47:27,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:47:27,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:47:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:27,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-06 22:47:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:27,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-06 22:47:27,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:27,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 22:47:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:27,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-06 22:47:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:27,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-06 22:47:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:27,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-06 22:47:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:27,415 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 22:47:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:27,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-06 22:47:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:27,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-06 22:47:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:27,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-06 22:47:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:27,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-06 22:47:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:27,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-06 22:47:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:27,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-06 22:47:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:27,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-06 22:47:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:27,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-06 22:47:27,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:27,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-11-06 22:47:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:27,463 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-06 22:47:27,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:47:27,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191874864] [2024-11-06 22:47:27,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191874864] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:47:27,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134067470] [2024-11-06 22:47:27,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 22:47:27,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:47:27,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:47:27,466 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:47:27,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-06 22:47:27,530 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 22:47:27,530 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:47:27,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-06 22:47:27,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:47:27,952 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 34 proven. 71 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-06 22:47:27,953 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:47:28,661 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 34 proven. 71 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-06 22:47:28,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134067470] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:47:28,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:47:28,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 12] total 26 [2024-11-06 22:47:28,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755605407] [2024-11-06 22:47:28,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:47:28,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-06 22:47:28,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:47:28,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-06 22:47:28,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2024-11-06 22:47:28,663 INFO L87 Difference]: Start difference. First operand 135 states and 159 transitions. Second operand has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 23 states have internal predecessors, (58), 18 states have call successors, (47), 3 states have call predecessors, (47), 2 states have return successors, (45), 18 states have call predecessors, (45), 18 states have call successors, (45) [2024-11-06 22:47:29,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:47:29,079 INFO L93 Difference]: Finished difference Result 150 states and 175 transitions. [2024-11-06 22:47:29,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-06 22:47:29,080 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 23 states have internal predecessors, (58), 18 states have call successors, (47), 3 states have call predecessors, (47), 2 states have return successors, (45), 18 states have call predecessors, (45), 18 states have call successors, (45) Word has length 102 [2024-11-06 22:47:29,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:47:29,081 INFO L225 Difference]: With dead ends: 150 [2024-11-06 22:47:29,081 INFO L226 Difference]: Without dead ends: 116 [2024-11-06 22:47:29,081 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=144, Invalid=848, Unknown=0, NotChecked=0, Total=992 [2024-11-06 22:47:29,082 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 14 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 22:47:29,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 383 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 22:47:29,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-06 22:47:29,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2024-11-06 22:47:29,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 70 states have (on average 1.1) internal successors, (77), 74 states have internal predecessors, (77), 27 states have call successors, (27), 14 states have call predecessors, (27), 14 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-06 22:47:29,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 130 transitions. [2024-11-06 22:47:29,113 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 130 transitions. Word has length 102 [2024-11-06 22:47:29,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:47:29,113 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 130 transitions. [2024-11-06 22:47:29,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 23 states have internal predecessors, (58), 18 states have call successors, (47), 3 states have call predecessors, (47), 2 states have return successors, (45), 18 states have call predecessors, (45), 18 states have call successors, (45) [2024-11-06 22:47:29,113 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 130 transitions. [2024-11-06 22:47:29,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-06 22:47:29,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:47:29,114 INFO L215 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:47:29,130 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-06 22:47:29,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-06 22:47:29,318 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:47:29,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:47:29,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1779279917, now seen corresponding path program 2 times [2024-11-06 22:47:29,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:47:29,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325162236] [2024-11-06 22:47:29,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:47:29,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:47:29,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:29,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-06 22:47:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:29,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-06 22:47:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:29,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 22:47:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:29,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-06 22:47:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:29,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-06 22:47:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:29,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-06 22:47:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:29,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 22:47:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:29,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-06 22:47:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:29,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-06 22:47:29,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:29,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-06 22:47:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:29,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-06 22:47:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:29,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-06 22:47:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:29,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-06 22:47:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:29,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-06 22:47:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:29,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-06 22:47:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:29,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-11-06 22:47:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:29,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-11-06 22:47:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:29,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-11-06 22:47:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:29,548 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 51 proven. 28 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-06 22:47:29,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:47:29,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325162236] [2024-11-06 22:47:29,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325162236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:47:29,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768195560] [2024-11-06 22:47:29,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 22:47:29,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:47:29,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:47:29,551 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:47:29,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-06 22:47:29,618 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 22:47:29,619 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:47:29,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 22:47:29,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:47:29,682 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 66 proven. 13 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-06 22:47:29,683 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:47:29,814 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 66 proven. 13 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-06 22:47:29,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768195560] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:47:29,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:47:29,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 9 [2024-11-06 22:47:29,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698290781] [2024-11-06 22:47:29,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:47:29,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-06 22:47:29,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:47:29,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-06 22:47:29,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-06 22:47:29,815 INFO L87 Difference]: Start difference. First operand 112 states and 130 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 8 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2024-11-06 22:47:29,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:47:29,887 INFO L93 Difference]: Finished difference Result 122 states and 142 transitions. [2024-11-06 22:47:29,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-06 22:47:29,887 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 8 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) Word has length 114 [2024-11-06 22:47:29,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:47:29,888 INFO L225 Difference]: With dead ends: 122 [2024-11-06 22:47:29,888 INFO L226 Difference]: Without dead ends: 114 [2024-11-06 22:47:29,888 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 257 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-06 22:47:29,889 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 4 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:47:29,889 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 163 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:47:29,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-06 22:47:29,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-11-06 22:47:29,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 72 states have (on average 1.0972222222222223) internal successors, (79), 74 states have internal predecessors, (79), 27 states have call successors, (27), 14 states have call predecessors, (27), 14 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-06 22:47:29,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 132 transitions. [2024-11-06 22:47:29,913 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 132 transitions. Word has length 114 [2024-11-06 22:47:29,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:47:29,913 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 132 transitions. [2024-11-06 22:47:29,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 8 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2024-11-06 22:47:29,913 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 132 transitions. [2024-11-06 22:47:29,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-06 22:47:29,914 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:47:29,914 INFO L215 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:47:29,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-06 22:47:30,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-06 22:47:30,115 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:47:30,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:47:30,115 INFO L85 PathProgramCache]: Analyzing trace with hash 289773103, now seen corresponding path program 1 times [2024-11-06 22:47:30,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:47:30,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61581735] [2024-11-06 22:47:30,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:47:30,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:47:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:47:30,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1360729688] [2024-11-06 22:47:30,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:47:30,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:47:30,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:47:30,170 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:47:30,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-06 22:47:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:47:30,244 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-06 22:47:30,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:47:30,943 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 35 proven. 103 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2024-11-06 22:47:30,943 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:48:09,589 WARN L286 SmtUtils]: Spent 8.87s on a formula simplification that was a NOOP. DAG size: 380 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)