./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.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-scaling/egcd2-ll_valuebound2.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', 'ebdf8b0d6633d593d56778eaf5218135ab2be92cae14e75cdda2462494f96410'] 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-scaling/egcd2-ll_valuebound2.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 ebdf8b0d6633d593d56778eaf5218135ab2be92cae14e75cdda2462494f96410 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 22:55:31,475 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 22:55:31,552 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 22:55:31,556 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 22:55:31,557 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 22:55:31,570 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 22:55:31,573 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 22:55:31,573 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 22:55:31,574 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 22:55:31,574 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 22:55:31,574 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 22:55:31,574 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 22:55:31,574 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 22:55:31,574 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 22:55:31,574 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 22:55:31,574 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 22:55:31,574 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 22:55:31,575 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 22:55:31,575 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 22:55:31,575 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 22:55:31,575 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 22:55:31,575 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 22:55:31,576 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 22:55:31,576 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 22:55:31,577 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 22:55:31,577 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 22:55:31,577 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 22:55:31,577 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 22:55:31,577 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 22:55:31,577 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 22:55:31,577 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 22:55:31,577 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 22:55:31,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 22:55:31,577 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 22:55:31,577 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 22:55:31,577 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 22:55:31,577 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 22:55:31,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 22:55:31,578 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 22:55:31,578 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 22:55:31,578 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 22:55:31,578 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 22:55:31,578 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 -> ebdf8b0d6633d593d56778eaf5218135ab2be92cae14e75cdda2462494f96410 [2024-11-06 22:55:31,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 22:55:31,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 22:55:31,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 22:55:31,842 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 22:55:31,842 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 22:55:31,844 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2024-11-06 22:55:32,980 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 22:55:33,130 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 22:55:33,130 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2024-11-06 22:55:33,137 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5638cbc1e/bb7b9f16aae544b0bc2dbaf57efa96ae/FLAG4da721848 [2024-11-06 22:55:33,147 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5638cbc1e/bb7b9f16aae544b0bc2dbaf57efa96ae [2024-11-06 22:55:33,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 22:55:33,150 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 22:55:33,150 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 22:55:33,151 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 22:55:33,153 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 22:55:33,154 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:55:33" (1/1) ... [2024-11-06 22:55:33,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e35c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:33, skipping insertion in model container [2024-11-06 22:55:33,155 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:55:33" (1/1) ... [2024-11-06 22:55:33,165 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 22:55:33,249 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-scaling/egcd2-ll_valuebound2.c[490,503] [2024-11-06 22:55:33,271 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 22:55:33,280 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 22:55:33,287 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-scaling/egcd2-ll_valuebound2.c[490,503] [2024-11-06 22:55:33,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 22:55:33,302 INFO L204 MainTranslator]: Completed translation [2024-11-06 22:55:33,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:33 WrapperNode [2024-11-06 22:55:33,303 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 22:55:33,303 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 22:55:33,303 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 22:55:33,303 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 22:55:33,308 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:33" (1/1) ... [2024-11-06 22:55:33,314 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:33" (1/1) ... [2024-11-06 22:55:33,326 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 79 [2024-11-06 22:55:33,326 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 22:55:33,327 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 22:55:33,327 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 22:55:33,327 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 22:55:33,333 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:33" (1/1) ... [2024-11-06 22:55:33,334 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:33" (1/1) ... [2024-11-06 22:55:33,334 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:33" (1/1) ... [2024-11-06 22:55:33,348 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 22:55:33,349 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:33" (1/1) ... [2024-11-06 22:55:33,349 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:33" (1/1) ... [2024-11-06 22:55:33,351 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:33" (1/1) ... [2024-11-06 22:55:33,355 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:33" (1/1) ... [2024-11-06 22:55:33,356 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:33" (1/1) ... [2024-11-06 22:55:33,357 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:33" (1/1) ... [2024-11-06 22:55:33,359 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 22:55:33,360 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 22:55:33,360 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 22:55:33,360 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 22:55:33,361 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:33" (1/1) ... [2024-11-06 22:55:33,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 22:55:33,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:33,389 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 22:55:33,395 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 22:55:33,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 22:55:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-06 22:55:33,411 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-06 22:55:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 22:55:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 22:55:33,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 22:55:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-06 22:55:33,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-06 22:55:33,454 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 22:55:33,455 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 22:55:33,599 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-06 22:55:33,599 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 22:55:33,609 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 22:55:33,610 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-06 22:55:33,610 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:55:33 BoogieIcfgContainer [2024-11-06 22:55:33,610 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 22:55:33,612 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 22:55:33,613 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 22:55:33,616 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 22:55:33,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:55:33" (1/3) ... [2024-11-06 22:55:33,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17be67a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:55:33, skipping insertion in model container [2024-11-06 22:55:33,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:33" (2/3) ... [2024-11-06 22:55:33,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17be67a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:55:33, skipping insertion in model container [2024-11-06 22:55:33,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:55:33" (3/3) ... [2024-11-06 22:55:33,619 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound2.c [2024-11-06 22:55:33,630 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 22:55:33,631 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 22:55:33,673 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 22:55:33,682 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;@61bd0630, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 22:55:33,682 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 22:55:33,687 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 21 states have internal predecessors, (28), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-06 22:55:33,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-06 22:55:33,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:33,696 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:55:33,697 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:33,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:33,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1146169762, now seen corresponding path program 1 times [2024-11-06 22:55:33,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:33,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598670371] [2024-11-06 22:55:33,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:33,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:33,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:55:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:33,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:55:33,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:33,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:55:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:33,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:55:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:33,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-06 22:55:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:33,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-06 22:55:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:33,862 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-06 22:55:33,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:33,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598670371] [2024-11-06 22:55:33,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598670371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:55:33,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:55:33,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 22:55:33,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101080066] [2024-11-06 22:55:33,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:55:33,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-06 22:55:33,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:33,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-06 22:55:33,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 22:55:33,883 INFO L87 Difference]: Start difference. First operand has 35 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 21 states have internal predecessors, (28), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-06 22:55:33,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:33,900 INFO L93 Difference]: Finished difference Result 67 states and 112 transitions. [2024-11-06 22:55:33,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-06 22:55:33,901 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2024-11-06 22:55:33,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:33,907 INFO L225 Difference]: With dead ends: 67 [2024-11-06 22:55:33,907 INFO L226 Difference]: Without dead ends: 31 [2024-11-06 22:55:33,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 22:55:33,911 INFO L432 NwaCegarLoop]: 46 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, 46 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 22:55:33,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:55:33,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-06 22:55:33,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-06 22:55:33,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-06 22:55:33,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2024-11-06 22:55:33,947 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 39 [2024-11-06 22:55:33,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:33,948 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2024-11-06 22:55:33,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-06 22:55:33,949 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2024-11-06 22:55:33,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-06 22:55:33,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:33,951 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:55:33,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 22:55:33,952 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:33,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:33,952 INFO L85 PathProgramCache]: Analyzing trace with hash 846808023, now seen corresponding path program 1 times [2024-11-06 22:55:33,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:33,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231847474] [2024-11-06 22:55:33,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:33,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:34,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:55:34,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:34,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:55:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:34,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:55:34,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:34,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:55:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:34,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-06 22:55:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:34,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-06 22:55:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:34,243 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-06 22:55:34,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:34,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231847474] [2024-11-06 22:55:34,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231847474] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:55:34,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418273147] [2024-11-06 22:55:34,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:34,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:34,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:34,246 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 22:55:34,247 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 22:55:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:34,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-06 22:55:34,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:34,543 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-06 22:55:34,544 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:55:34,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418273147] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:55:34,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 22:55:34,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 11 [2024-11-06 22:55:34,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829129429] [2024-11-06 22:55:34,679 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 22:55:34,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-06 22:55:34,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:34,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-06 22:55:34,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-06 22:55:34,680 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-06 22:55:34,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:34,880 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2024-11-06 22:55:34,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-06 22:55:34,880 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 40 [2024-11-06 22:55:34,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:34,881 INFO L225 Difference]: With dead ends: 52 [2024-11-06 22:55:34,881 INFO L226 Difference]: Without dead ends: 44 [2024-11-06 22:55:34,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-11-06 22:55:34,882 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 35 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:55:34,882 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 173 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:55:34,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-06 22:55:34,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2024-11-06 22:55:34,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-06 22:55:34,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions. [2024-11-06 22:55:34,897 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 40 [2024-11-06 22:55:34,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:34,897 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 58 transitions. [2024-11-06 22:55:34,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-06 22:55:34,898 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions. [2024-11-06 22:55:34,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-06 22:55:34,898 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:34,898 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:55:34,912 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 22:55:35,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:35,102 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:35,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:35,103 INFO L85 PathProgramCache]: Analyzing trace with hash 481927254, now seen corresponding path program 1 times [2024-11-06 22:55:35,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:35,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930874433] [2024-11-06 22:55:35,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:35,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:55:35,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1429334019] [2024-11-06 22:55:35,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:35,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:35,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:35,137 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 22:55:35,139 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 22:55:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:35,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 22:55:35,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:35,230 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-06 22:55:35,231 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 22:55:35,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:35,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930874433] [2024-11-06 22:55:35,233 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:55:35,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429334019] [2024-11-06 22:55:35,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429334019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:55:35,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:55:35,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:55:35,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609287017] [2024-11-06 22:55:35,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:55:35,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:55:35,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:35,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:55:35,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:55:35,235 INFO L87 Difference]: Start difference. First operand 43 states and 58 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 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 22:55:35,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:35,285 INFO L93 Difference]: Finished difference Result 62 states and 86 transitions. [2024-11-06 22:55:35,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:55:35,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 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 41 [2024-11-06 22:55:35,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:35,288 INFO L225 Difference]: With dead ends: 62 [2024-11-06 22:55:35,288 INFO L226 Difference]: Without dead ends: 60 [2024-11-06 22:55:35,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 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 22:55:35,288 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 4 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:55:35,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 136 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:55:35,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-06 22:55:35,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 51. [2024-11-06 22:55:35,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 31 states have internal predecessors, (32), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-06 22:55:35,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2024-11-06 22:55:35,307 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 41 [2024-11-06 22:55:35,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:35,307 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2024-11-06 22:55:35,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 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 22:55:35,307 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2024-11-06 22:55:35,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-06 22:55:35,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:35,308 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:55:35,321 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 22:55:35,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:35,508 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:35,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:35,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1626076469, now seen corresponding path program 1 times [2024-11-06 22:55:35,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:35,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239160465] [2024-11-06 22:55:35,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:35,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:55:35,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1655715396] [2024-11-06 22:55:35,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:35,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:35,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:35,533 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 22:55:35,535 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 22:55:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:35,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-06 22:55:35,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:35,655 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-06 22:55:35,655 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 22:55:35,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:35,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239160465] [2024-11-06 22:55:35,655 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:55:35,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655715396] [2024-11-06 22:55:35,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655715396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:55:35,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:55:35,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:55:35,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555389365] [2024-11-06 22:55:35,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:55:35,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:55:35,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:35,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:55:35,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:55:35,658 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-06 22:55:35,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:35,703 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2024-11-06 22:55:35,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:55:35,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 46 [2024-11-06 22:55:35,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:35,705 INFO L225 Difference]: With dead ends: 58 [2024-11-06 22:55:35,705 INFO L226 Difference]: Without dead ends: 56 [2024-11-06 22:55:35,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 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 22:55:35,706 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 5 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 146 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 22:55:35,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 146 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:55:35,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-06 22:55:35,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2024-11-06 22:55:35,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 34 states have internal predecessors, (35), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-06 22:55:35,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2024-11-06 22:55:35,715 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 46 [2024-11-06 22:55:35,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:35,715 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2024-11-06 22:55:35,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-06 22:55:35,715 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2024-11-06 22:55:35,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-06 22:55:35,716 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:35,716 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:55:35,731 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 22:55:35,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:35,921 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:35,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:35,921 INFO L85 PathProgramCache]: Analyzing trace with hash -670274197, now seen corresponding path program 1 times [2024-11-06 22:55:35,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:35,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751489262] [2024-11-06 22:55:35,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:35,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:55:35,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1435337004] [2024-11-06 22:55:35,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:35,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:35,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:35,949 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 22:55:35,951 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 22:55:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:35,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-06 22:55:35,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:36,184 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-06 22:55:36,184 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:55:36,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:36,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751489262] [2024-11-06 22:55:36,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:55:36,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435337004] [2024-11-06 22:55:36,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435337004] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:55:36,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-06 22:55:36,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-11-06 22:55:36,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284589313] [2024-11-06 22:55:36,231 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-06 22:55:36,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-06 22:55:36,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:36,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-06 22:55:36,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-06 22:55:36,232 INFO L87 Difference]: Start difference. First operand 55 states and 70 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-06 22:55:36,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:36,338 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2024-11-06 22:55:36,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-06 22:55:36,338 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 56 [2024-11-06 22:55:36,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:36,340 INFO L225 Difference]: With dead ends: 62 [2024-11-06 22:55:36,341 INFO L226 Difference]: Without dead ends: 60 [2024-11-06 22:55:36,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-06 22:55:36,341 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:55:36,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 161 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:55:36,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-06 22:55:36,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2024-11-06 22:55:36,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 37 states have internal predecessors, (38), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-06 22:55:36,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2024-11-06 22:55:36,356 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 56 [2024-11-06 22:55:36,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:36,357 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2024-11-06 22:55:36,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-06 22:55:36,357 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2024-11-06 22:55:36,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-06 22:55:36,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:36,358 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:55:36,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-06 22:55:36,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:36,560 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:36,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:36,560 INFO L85 PathProgramCache]: Analyzing trace with hash 815241237, now seen corresponding path program 1 times [2024-11-06 22:55:36,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:36,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126225749] [2024-11-06 22:55:36,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:36,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:55:36,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1667796236] [2024-11-06 22:55:36,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:36,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:36,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:36,589 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 22:55:36,590 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 22:55:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:36,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-06 22:55:36,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:36,680 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-06 22:55:36,681 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:55:36,744 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-06 22:55:36,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:36,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126225749] [2024-11-06 22:55:36,745 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:55:36,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667796236] [2024-11-06 22:55:36,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667796236] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:55:36,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 22:55:36,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2024-11-06 22:55:36,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13844423] [2024-11-06 22:55:36,745 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 22:55:36,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 22:55:36,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:36,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 22:55:36,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-06 22:55:36,748 INFO L87 Difference]: Start difference. First operand 59 states and 73 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-06 22:55:36,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:36,827 INFO L93 Difference]: Finished difference Result 87 states and 118 transitions. [2024-11-06 22:55:36,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-06 22:55:36,829 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 63 [2024-11-06 22:55:36,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:36,830 INFO L225 Difference]: With dead ends: 87 [2024-11-06 22:55:36,831 INFO L226 Difference]: Without dead ends: 85 [2024-11-06 22:55:36,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 116 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-06 22:55:36,832 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 8 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:55:36,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 156 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:55:36,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-06 22:55:36,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 55. [2024-11-06 22:55:36,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-06 22:55:36,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2024-11-06 22:55:36,848 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 63 [2024-11-06 22:55:36,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:36,848 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2024-11-06 22:55:36,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-06 22:55:36,848 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2024-11-06 22:55:36,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-06 22:55:36,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:36,850 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:55:36,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-06 22:55:37,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:37,055 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:37,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:37,055 INFO L85 PathProgramCache]: Analyzing trace with hash -759965185, now seen corresponding path program 1 times [2024-11-06 22:55:37,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:37,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490184395] [2024-11-06 22:55:37,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:37,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:37,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:55:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:37,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:55:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:37,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:55:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:37,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:55:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:37,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-06 22:55:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:37,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-06 22:55:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:37,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-06 22:55:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:37,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-06 22:55:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:37,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-06 22:55:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:37,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-06 22:55:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:37,244 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-06 22:55:37,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:37,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490184395] [2024-11-06 22:55:37,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490184395] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:55:37,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976031709] [2024-11-06 22:55:37,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:37,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:37,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:37,247 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 22:55:37,248 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 22:55:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:37,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-06 22:55:37,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:37,338 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-06 22:55:37,338 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:55:37,422 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-06 22:55:37,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976031709] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:55:37,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:55:37,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2024-11-06 22:55:37,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738743281] [2024-11-06 22:55:37,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:55:37,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-06 22:55:37,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:37,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-06 22:55:37,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-06 22:55:37,425 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 7 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-06 22:55:37,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:37,565 INFO L93 Difference]: Finished difference Result 102 states and 142 transitions. [2024-11-06 22:55:37,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-06 22:55:37,566 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 7 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 65 [2024-11-06 22:55:37,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:37,567 INFO L225 Difference]: With dead ends: 102 [2024-11-06 22:55:37,567 INFO L226 Difference]: Without dead ends: 94 [2024-11-06 22:55:37,568 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 141 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-06 22:55:37,568 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 32 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:55:37,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 270 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:55:37,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-06 22:55:37,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2024-11-06 22:55:37,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-06 22:55:37,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 118 transitions. [2024-11-06 22:55:37,588 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 118 transitions. Word has length 65 [2024-11-06 22:55:37,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:37,589 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 118 transitions. [2024-11-06 22:55:37,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 7 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-06 22:55:37,589 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 118 transitions. [2024-11-06 22:55:37,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-06 22:55:37,590 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:37,590 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:55:37,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-06 22:55:37,791 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,SelfDestructingSolverStorable6 [2024-11-06 22:55:37,791 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:37,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:37,791 INFO L85 PathProgramCache]: Analyzing trace with hash -696294669, now seen corresponding path program 1 times [2024-11-06 22:55:37,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:37,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127035459] [2024-11-06 22:55:37,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:37,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:55:37,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644398222] [2024-11-06 22:55:37,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:37,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:37,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:37,813 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 22:55:37,814 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 22:55:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:37,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-06 22:55:37,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:37,962 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-06 22:55:37,962 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:55:37,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:37,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127035459] [2024-11-06 22:55:37,989 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:55:37,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644398222] [2024-11-06 22:55:37,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644398222] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:55:37,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-06 22:55:37,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2024-11-06 22:55:37,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283817328] [2024-11-06 22:55:37,989 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-06 22:55:37,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-06 22:55:37,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:37,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-06 22:55:37,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-06 22:55:37,990 INFO L87 Difference]: Start difference. First operand 85 states and 118 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-06 22:55:38,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:38,075 INFO L93 Difference]: Finished difference Result 120 states and 169 transitions. [2024-11-06 22:55:38,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 22:55:38,075 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 71 [2024-11-06 22:55:38,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:38,076 INFO L225 Difference]: With dead ends: 120 [2024-11-06 22:55:38,076 INFO L226 Difference]: Without dead ends: 117 [2024-11-06 22:55:38,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-06 22:55:38,077 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 7 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:55:38,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 198 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:55:38,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-06 22:55:38,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 114. [2024-11-06 22:55:38,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 63 states have internal predecessors, (74), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-06 22:55:38,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 162 transitions. [2024-11-06 22:55:38,097 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 162 transitions. Word has length 71 [2024-11-06 22:55:38,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:38,097 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 162 transitions. [2024-11-06 22:55:38,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-06 22:55:38,098 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 162 transitions. [2024-11-06 22:55:38,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-06 22:55:38,098 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:38,098 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:55:38,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-06 22:55:38,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:38,299 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:38,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:38,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1352497678, now seen corresponding path program 2 times [2024-11-06 22:55:38,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:38,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844730519] [2024-11-06 22:55:38,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:38,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:55:38,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2058856349] [2024-11-06 22:55:38,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 22:55:38,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:38,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:38,322 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 22:55:38,323 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 22:55:38,368 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 22:55:38,368 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:55:38,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-06 22:55:38,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:38,517 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-06 22:55:38,517 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:55:38,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:38,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844730519] [2024-11-06 22:55:38,543 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:55:38,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058856349] [2024-11-06 22:55:38,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058856349] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:55:38,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-06 22:55:38,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2024-11-06 22:55:38,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425928198] [2024-11-06 22:55:38,544 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-06 22:55:38,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 22:55:38,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:38,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 22:55:38,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-06 22:55:38,545 INFO L87 Difference]: Start difference. First operand 114 states and 162 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-06 22:55:38,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:38,658 INFO L93 Difference]: Finished difference Result 126 states and 172 transitions. [2024-11-06 22:55:38,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-06 22:55:38,658 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 76 [2024-11-06 22:55:38,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:38,660 INFO L225 Difference]: With dead ends: 126 [2024-11-06 22:55:38,660 INFO L226 Difference]: Without dead ends: 124 [2024-11-06 22:55:38,660 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-06 22:55:38,661 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 12 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:55:38,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 216 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:55:38,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-06 22:55:38,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2024-11-06 22:55:38,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 67 states have (on average 1.1940298507462686) internal successors, (80), 69 states have internal predecessors, (80), 45 states have call successors, (45), 9 states have call predecessors, (45), 9 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-06 22:55:38,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 168 transitions. [2024-11-06 22:55:38,686 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 168 transitions. Word has length 76 [2024-11-06 22:55:38,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:38,687 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 168 transitions. [2024-11-06 22:55:38,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-06 22:55:38,687 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 168 transitions. [2024-11-06 22:55:38,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-06 22:55:38,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:38,688 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:55:38,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-06 22:55:38,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:38,893 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:38,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:38,893 INFO L85 PathProgramCache]: Analyzing trace with hash -421153901, now seen corresponding path program 3 times [2024-11-06 22:55:38,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:38,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117006707] [2024-11-06 22:55:38,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:38,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:55:38,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1488547021] [2024-11-06 22:55:38,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 22:55:38,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:38,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:38,917 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 22:55:38,918 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 22:55:38,966 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-06 22:55:38,967 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:55:38,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-06 22:55:38,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:39,780 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 43 proven. 20 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-06 22:55:39,781 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:55:39,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:39,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117006707] [2024-11-06 22:55:39,981 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:55:39,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488547021] [2024-11-06 22:55:39,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488547021] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:55:39,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-06 22:55:39,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-06 22:55:39,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450228354] [2024-11-06 22:55:39,982 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-06 22:55:39,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-06 22:55:39,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:39,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-06 22:55:39,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2024-11-06 22:55:39,983 INFO L87 Difference]: Start difference. First operand 122 states and 168 transitions. Second operand has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 6 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-06 22:55:40,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:40,357 INFO L93 Difference]: Finished difference Result 134 states and 178 transitions. [2024-11-06 22:55:40,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-06 22:55:40,360 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 6 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 81 [2024-11-06 22:55:40,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:40,361 INFO L225 Difference]: With dead ends: 134 [2024-11-06 22:55:40,361 INFO L226 Difference]: Without dead ends: 132 [2024-11-06 22:55:40,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2024-11-06 22:55:40,361 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 39 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 22:55:40,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 241 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 22:55:40,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-06 22:55:40,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2024-11-06 22:55:40,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 73 states have (on average 1.178082191780822) internal successors, (86), 75 states have internal predecessors, (86), 45 states have call successors, (45), 11 states have call predecessors, (45), 11 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-06 22:55:40,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 174 transitions. [2024-11-06 22:55:40,383 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 174 transitions. Word has length 81 [2024-11-06 22:55:40,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:40,383 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 174 transitions. [2024-11-06 22:55:40,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 6 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-06 22:55:40,383 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 174 transitions. [2024-11-06 22:55:40,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-06 22:55:40,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:40,384 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:55:40,396 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 22:55:40,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:40,584 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:40,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:40,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1712962370, now seen corresponding path program 1 times [2024-11-06 22:55:40,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:40,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509624781] [2024-11-06 22:55:40,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:40,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:55:40,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1241573071] [2024-11-06 22:55:40,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:40,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:40,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:40,598 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 22:55:40,599 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 22:55:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:40,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-06 22:55:40,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:41,043 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-11-06 22:55:41,043 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:55:41,649 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-06 22:55:41,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:41,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509624781] [2024-11-06 22:55:41,650 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:55:41,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241573071] [2024-11-06 22:55:41,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241573071] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:55:41,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 22:55:41,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2024-11-06 22:55:41,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777175489] [2024-11-06 22:55:41,650 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 22:55:41,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-06 22:55:41,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:41,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-06 22:55:41,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-11-06 22:55:41,651 INFO L87 Difference]: Start difference. First operand 130 states and 174 transitions. Second operand has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2024-11-06 22:55:43,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:43,742 INFO L93 Difference]: Finished difference Result 230 states and 337 transitions. [2024-11-06 22:55:43,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-06 22:55:43,743 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) Word has length 87 [2024-11-06 22:55:43,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:43,745 INFO L225 Difference]: With dead ends: 230 [2024-11-06 22:55:43,745 INFO L226 Difference]: Without dead ends: 226 [2024-11-06 22:55:43,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=255, Invalid=1151, Unknown=0, NotChecked=0, Total=1406 [2024-11-06 22:55:43,746 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 75 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-06 22:55:43,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 459 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-06 22:55:43,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-11-06 22:55:43,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 223. [2024-11-06 22:55:43,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 115 states have (on average 1.2347826086956522) internal successors, (142), 118 states have internal predecessors, (142), 94 states have call successors, (94), 13 states have call predecessors, (94), 13 states have return successors, (92), 91 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-06 22:55:43,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 328 transitions. [2024-11-06 22:55:43,798 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 328 transitions. Word has length 87 [2024-11-06 22:55:43,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:43,799 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 328 transitions. [2024-11-06 22:55:43,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2024-11-06 22:55:43,799 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 328 transitions. [2024-11-06 22:55:43,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-06 22:55:43,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:43,800 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:55:43,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-06 22:55:44,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:44,003 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:44,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:44,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1006372811, now seen corresponding path program 4 times [2024-11-06 22:55:44,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:44,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901714032] [2024-11-06 22:55:44,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:44,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:55:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:55:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:55:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:55:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-06 22:55:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-06 22:55:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-06 22:55:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-06 22:55:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-06 22:55:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-06 22:55:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-06 22:55:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-06 22:55:44,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-06 22:55:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-06 22:55:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-06 22:55:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,118 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-11-06 22:55:44,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:44,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901714032] [2024-11-06 22:55:44,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901714032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:55:44,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:55:44,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:55:44,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625146586] [2024-11-06 22:55:44,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:55:44,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:55:44,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:44,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:55:44,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:55:44,120 INFO L87 Difference]: Start difference. First operand 223 states and 328 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 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 22:55:44,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:44,195 INFO L93 Difference]: Finished difference Result 276 states and 404 transitions. [2024-11-06 22:55:44,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 22:55:44,200 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), 3 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 96 [2024-11-06 22:55:44,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:44,201 INFO L225 Difference]: With dead ends: 276 [2024-11-06 22:55:44,201 INFO L226 Difference]: Without dead ends: 202 [2024-11-06 22:55:44,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 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 22:55:44,202 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 6 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:55:44,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 171 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:55:44,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-06 22:55:44,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 190. [2024-11-06 22:55:44,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 98 states have (on average 1.1734693877551021) internal successors, (115), 101 states have internal predecessors, (115), 78 states have call successors, (78), 13 states have call predecessors, (78), 13 states have return successors, (76), 75 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-06 22:55:44,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 269 transitions. [2024-11-06 22:55:44,249 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 269 transitions. Word has length 96 [2024-11-06 22:55:44,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:44,249 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 269 transitions. [2024-11-06 22:55:44,250 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), 3 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 22:55:44,250 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 269 transitions. [2024-11-06 22:55:44,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-06 22:55:44,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:44,250 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:55:44,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-06 22:55:44,251 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:44,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:44,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1899970478, now seen corresponding path program 1 times [2024-11-06 22:55:44,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:44,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949992665] [2024-11-06 22:55:44,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:44,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:55:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:55:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:55:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:55:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-06 22:55:44,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-06 22:55:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-06 22:55:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,436 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-06 22:55:44,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-06 22:55:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-06 22:55:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-06 22:55:44,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-06 22:55:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-06 22:55:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-06 22:55:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-06 22:55:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-06 22:55:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-06 22:55:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,475 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 32 proven. 23 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-11-06 22:55:44,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:44,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949992665] [2024-11-06 22:55:44,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949992665] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:55:44,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133435659] [2024-11-06 22:55:44,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:44,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:44,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:44,482 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 22:55:44,485 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 22:55:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:44,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-06 22:55:44,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:44,620 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 122 proven. 23 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-11-06 22:55:44,621 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:55:44,753 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 32 proven. 23 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-11-06 22:55:44,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133435659] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:55:44,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:55:44,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2024-11-06 22:55:44,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990852306] [2024-11-06 22:55:44,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:55:44,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-06 22:55:44,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:44,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-06 22:55:44,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-06 22:55:44,754 INFO L87 Difference]: Start difference. First operand 190 states and 269 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2024-11-06 22:55:44,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:44,982 INFO L93 Difference]: Finished difference Result 256 states and 363 transitions. [2024-11-06 22:55:44,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-06 22:55:44,983 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) Word has length 103 [2024-11-06 22:55:44,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:44,985 INFO L225 Difference]: With dead ends: 256 [2024-11-06 22:55:44,985 INFO L226 Difference]: Without dead ends: 169 [2024-11-06 22:55:44,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 234 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2024-11-06 22:55:44,986 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 47 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:55:44,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 293 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:55:44,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-06 22:55:45,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2024-11-06 22:55:45,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 89 states have (on average 1.146067415730337) internal successors, (102), 92 states have internal predecessors, (102), 66 states have call successors, (66), 13 states have call predecessors, (66), 13 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-06 22:55:45,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 232 transitions. [2024-11-06 22:55:45,033 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 232 transitions. Word has length 103 [2024-11-06 22:55:45,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:45,033 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 232 transitions. [2024-11-06 22:55:45,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2024-11-06 22:55:45,034 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 232 transitions. [2024-11-06 22:55:45,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-06 22:55:45,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:45,036 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:55:45,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-06 22:55:45,236 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,SelfDestructingSolverStorable12 [2024-11-06 22:55:45,236 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:45,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:45,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1451333771, now seen corresponding path program 1 times [2024-11-06 22:55:45,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:45,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811443183] [2024-11-06 22:55:45,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:45,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:45,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:45,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:55:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:45,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:55:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:45,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:55:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:45,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:55:45,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:45,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-06 22:55:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:45,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-06 22:55:45,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:45,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-06 22:55:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:45,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-06 22:55:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:45,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-06 22:55:45,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:45,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-06 22:55:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:45,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-06 22:55:45,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:45,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-06 22:55:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:45,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-06 22:55:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:45,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-06 22:55:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:45,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-06 22:55:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:45,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-06 22:55:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:45,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-06 22:55:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:45,356 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-11-06 22:55:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:45,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-11-06 22:55:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:45,361 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 42 proven. 9 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-11-06 22:55:45,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:45,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811443183] [2024-11-06 22:55:45,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811443183] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:55:45,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133854589] [2024-11-06 22:55:45,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:45,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:45,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:45,364 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 22:55:45,365 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 22:55:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:45,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 22:55:45,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:45,451 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 88 proven. 9 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2024-11-06 22:55:45,452 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:55:45,529 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 42 proven. 9 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-11-06 22:55:45,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133854589] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:55:45,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:55:45,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2024-11-06 22:55:45,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751725196] [2024-11-06 22:55:45,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:55:45,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 22:55:45,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:45,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 22:55:45,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-06 22:55:45,530 INFO L87 Difference]: Start difference. First operand 169 states and 232 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-06 22:55:45,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:45,710 INFO L93 Difference]: Finished difference Result 195 states and 271 transitions. [2024-11-06 22:55:45,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-06 22:55:45,710 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 117 [2024-11-06 22:55:45,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:45,711 INFO L225 Difference]: With dead ends: 195 [2024-11-06 22:55:45,711 INFO L226 Difference]: Without dead ends: 183 [2024-11-06 22:55:45,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 269 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-06 22:55:45,712 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 17 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:55:45,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 325 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:55:45,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-06 22:55:45,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 164. [2024-11-06 22:55:45,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 86 states have (on average 1.1395348837209303) internal successors, (98), 88 states have internal predecessors, (98), 65 states have call successors, (65), 12 states have call predecessors, (65), 12 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2024-11-06 22:55:45,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 226 transitions. [2024-11-06 22:55:45,742 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 226 transitions. Word has length 117 [2024-11-06 22:55:45,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:45,743 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 226 transitions. [2024-11-06 22:55:45,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-06 22:55:45,743 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 226 transitions. [2024-11-06 22:55:45,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-06 22:55:45,744 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:45,744 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:55:45,756 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 22:55:45,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:45,944 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:45,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:45,945 INFO L85 PathProgramCache]: Analyzing trace with hash -50105014, now seen corresponding path program 2 times [2024-11-06 22:55:45,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:45,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552062152] [2024-11-06 22:55:45,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:45,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:46,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:55:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:46,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:55:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:46,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:55:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:46,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:55:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:46,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-06 22:55:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:46,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-06 22:55:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:46,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-06 22:55:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:46,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-06 22:55:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:46,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-06 22:55:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:46,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-06 22:55:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:46,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-06 22:55:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:46,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-06 22:55:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:46,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-06 22:55:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:46,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-06 22:55:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:46,152 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-06 22:55:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:46,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-06 22:55:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:46,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-06 22:55:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:46,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-11-06 22:55:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:46,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-06 22:55:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:46,166 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 43 proven. 32 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2024-11-06 22:55:46,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:46,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552062152] [2024-11-06 22:55:46,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552062152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:55:46,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393069155] [2024-11-06 22:55:46,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 22:55:46,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:46,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:46,168 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 22:55:46,169 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 22:55:46,222 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 22:55:46,222 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:55:46,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-06 22:55:46,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:46,319 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 103 proven. 18 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2024-11-06 22:55:46,320 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:55:46,464 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 43 proven. 32 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2024-11-06 22:55:46,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393069155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:55:46,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:55:46,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-11-06 22:55:46,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282156155] [2024-11-06 22:55:46,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:55:46,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-06 22:55:46,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:46,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-06 22:55:46,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2024-11-06 22:55:46,466 INFO L87 Difference]: Start difference. First operand 164 states and 226 transitions. Second operand has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 19 states have internal predecessors, (56), 12 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (45), 12 states have call predecessors, (45), 12 states have call successors, (45) [2024-11-06 22:55:46,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:46,769 INFO L93 Difference]: Finished difference Result 197 states and 273 transitions. [2024-11-06 22:55:46,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-06 22:55:46,771 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 19 states have internal predecessors, (56), 12 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (45), 12 states have call predecessors, (45), 12 states have call successors, (45) Word has length 118 [2024-11-06 22:55:46,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:46,774 INFO L225 Difference]: With dead ends: 197 [2024-11-06 22:55:46,774 INFO L226 Difference]: Without dead ends: 161 [2024-11-06 22:55:46,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 261 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2024-11-06 22:55:46,776 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 28 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:55:46,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 525 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:55:46,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-06 22:55:46,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2024-11-06 22:55:46,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 83 states have (on average 1.108433734939759) internal successors, (92), 85 states have internal predecessors, (92), 65 states have call successors, (65), 12 states have call predecessors, (65), 12 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2024-11-06 22:55:46,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 220 transitions. [2024-11-06 22:55:46,810 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 220 transitions. Word has length 118 [2024-11-06 22:55:46,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:46,812 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 220 transitions. [2024-11-06 22:55:46,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 19 states have internal predecessors, (56), 12 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (45), 12 states have call predecessors, (45), 12 states have call successors, (45) [2024-11-06 22:55:46,812 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 220 transitions. [2024-11-06 22:55:46,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-06 22:55:46,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:46,814 INFO L215 NwaCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:55:46,827 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 22:55:47,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:47,019 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:47,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:47,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1816082155, now seen corresponding path program 2 times [2024-11-06 22:55:47,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:47,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421587630] [2024-11-06 22:55:47,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:47,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:55:47,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1014894890] [2024-11-06 22:55:47,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 22:55:47,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:47,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:47,035 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 22:55:47,036 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 22:55:47,097 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 22:55:47,097 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:55:47,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-06 22:55:47,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:47,841 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2024-11-06 22:55:47,841 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:55:49,243 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 32 proven. 43 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-11-06 22:55:49,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:49,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421587630] [2024-11-06 22:55:49,243 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:55:49,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014894890] [2024-11-06 22:55:49,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014894890] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:55:49,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 22:55:49,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 26 [2024-11-06 22:55:49,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103215052] [2024-11-06 22:55:49,243 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 22:55:49,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-06 22:55:49,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:49,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-06 22:55:49,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2024-11-06 22:55:49,244 INFO L87 Difference]: Start difference. First operand 161 states and 220 transitions. Second operand has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 14 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (43), 12 states have call predecessors, (43), 12 states have call successors, (43) [2024-11-06 22:55:52,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:52,092 INFO L93 Difference]: Finished difference Result 271 states and 385 transitions. [2024-11-06 22:55:52,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-06 22:55:52,093 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 14 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (43), 12 states have call predecessors, (43), 12 states have call successors, (43) Word has length 134 [2024-11-06 22:55:52,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:52,094 INFO L225 Difference]: With dead ends: 271 [2024-11-06 22:55:52,094 INFO L226 Difference]: Without dead ends: 238 [2024-11-06 22:55:52,095 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 240 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=643, Invalid=2219, Unknown=0, NotChecked=0, Total=2862 [2024-11-06 22:55:52,095 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 102 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-06 22:55:52,095 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 560 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-06 22:55:52,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-06 22:55:52,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 228. [2024-11-06 22:55:52,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 118 states have (on average 1.1440677966101696) internal successors, (135), 121 states have internal predecessors, (135), 94 states have call successors, (94), 15 states have call predecessors, (94), 15 states have return successors, (92), 91 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-06 22:55:52,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 321 transitions. [2024-11-06 22:55:52,159 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 321 transitions. Word has length 134 [2024-11-06 22:55:52,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:52,159 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 321 transitions. [2024-11-06 22:55:52,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 14 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (43), 12 states have call predecessors, (43), 12 states have call successors, (43) [2024-11-06 22:55:52,159 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 321 transitions. [2024-11-06 22:55:52,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-06 22:55:52,160 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:52,160 INFO L215 NwaCegarLoop]: trace histogram [18, 17, 17, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:55:52,173 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 22:55:52,361 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,SelfDestructingSolverStorable15 [2024-11-06 22:55:52,361 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:52,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:52,361 INFO L85 PathProgramCache]: Analyzing trace with hash -56106900, now seen corresponding path program 2 times [2024-11-06 22:55:52,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:52,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396283621] [2024-11-06 22:55:52,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:52,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:55:52,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [538055203] [2024-11-06 22:55:52,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 22:55:52,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:52,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:52,378 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 22:55:52,379 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 22:55:52,441 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 22:55:52,441 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:55:52,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-06 22:55:52,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:52,918 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 84 proven. 56 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2024-11-06 22:55:52,919 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:55:53,142 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 86 proven. 7 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2024-11-06 22:55:53,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:53,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396283621] [2024-11-06 22:55:53,143 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:55:53,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538055203] [2024-11-06 22:55:53,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538055203] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:55:53,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 22:55:53,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 9] total 25 [2024-11-06 22:55:53,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627069066] [2024-11-06 22:55:53,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 22:55:53,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-06 22:55:53,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:53,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-06 22:55:53,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2024-11-06 22:55:53,145 INFO L87 Difference]: Start difference. First operand 228 states and 321 transitions. Second operand has 25 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 22 states have internal predecessors, (50), 9 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 10 states have call predecessors, (33), 9 states have call successors, (33) [2024-11-06 22:55:54,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:54,902 INFO L93 Difference]: Finished difference Result 244 states and 335 transitions. [2024-11-06 22:55:54,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-06 22:55:54,905 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 22 states have internal predecessors, (50), 9 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 10 states have call predecessors, (33), 9 states have call successors, (33) Word has length 139 [2024-11-06 22:55:54,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:54,906 INFO L225 Difference]: With dead ends: 244 [2024-11-06 22:55:54,906 INFO L226 Difference]: Without dead ends: 231 [2024-11-06 22:55:54,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=260, Invalid=1300, Unknown=0, NotChecked=0, Total=1560 [2024-11-06 22:55:54,907 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 66 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-06 22:55:54,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 481 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-06 22:55:54,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-06 22:55:54,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 230. [2024-11-06 22:55:54,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 121 states have (on average 1.115702479338843) internal successors, (135), 122 states have internal predecessors, (135), 91 states have call successors, (91), 17 states have call predecessors, (91), 17 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-06 22:55:54,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 316 transitions. [2024-11-06 22:55:54,981 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 316 transitions. Word has length 139 [2024-11-06 22:55:54,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:54,981 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 316 transitions. [2024-11-06 22:55:54,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 22 states have internal predecessors, (50), 9 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 10 states have call predecessors, (33), 9 states have call successors, (33) [2024-11-06 22:55:54,982 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 316 transitions. [2024-11-06 22:55:54,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-06 22:55:54,984 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:54,984 INFO L215 NwaCegarLoop]: trace histogram [19, 18, 18, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:55:54,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-06 22:55:55,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-06 22:55:55,185 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:55,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:55,185 INFO L85 PathProgramCache]: Analyzing trace with hash -645167759, now seen corresponding path program 3 times [2024-11-06 22:55:55,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:55,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150494689] [2024-11-06 22:55:55,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:55,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:55,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:55,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:55:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:55,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:55:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:55,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:55:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:55,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:55:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:55,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-06 22:55:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:55,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-06 22:55:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:55,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-06 22:55:55,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:55,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-06 22:55:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:55,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-06 22:55:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:55,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-06 22:55:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:55,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-06 22:55:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:55,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-06 22:55:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:55,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-06 22:55:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:55,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-06 22:55:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:55,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-11-06 22:55:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:55,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-06 22:55:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:55,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-11-06 22:55:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:55,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-06 22:55:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:55,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-11-06 22:55:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:55,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-11-06 22:55:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:55,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-11-06 22:55:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:55,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-11-06 22:55:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:55,389 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-11-06 22:55:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:55,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-11-06 22:55:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:55,393 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 54 proven. 51 refuted. 0 times theorem prover too weak. 657 trivial. 0 not checked. [2024-11-06 22:55:55,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:55,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150494689] [2024-11-06 22:55:55,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150494689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:55:55,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279670369] [2024-11-06 22:55:55,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 22:55:55,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:55,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:55,395 INFO L229 MonitoredProcess]: Starting monitored process 17 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 22:55:55,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-06 22:55:55,450 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-06 22:55:55,450 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:55:55,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-06 22:55:55,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:55,945 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 86 proven. 52 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2024-11-06 22:55:55,945 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:55:56,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279670369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:55:56,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 22:55:56,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14] total 20 [2024-11-06 22:55:56,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608670394] [2024-11-06 22:55:56,493 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 22:55:56,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-06 22:55:56,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:56,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-06 22:55:56,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702 [2024-11-06 22:55:56,494 INFO L87 Difference]: Start difference. First operand 230 states and 316 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 12 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (40), 12 states have call predecessors, (40), 12 states have call successors, (40) [2024-11-06 22:55:57,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:57,309 INFO L93 Difference]: Finished difference Result 296 states and 399 transitions. [2024-11-06 22:55:57,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-06 22:55:57,310 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 12 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (40), 12 states have call predecessors, (40), 12 states have call successors, (40) Word has length 142 [2024-11-06 22:55:57,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:57,311 INFO L225 Difference]: With dead ends: 296 [2024-11-06 22:55:57,311 INFO L226 Difference]: Without dead ends: 184 [2024-11-06 22:55:57,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=264, Invalid=1458, Unknown=0, NotChecked=0, Total=1722 [2024-11-06 22:55:57,312 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 72 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 22:55:57,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 544 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 22:55:57,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-06 22:55:57,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 170. [2024-11-06 22:55:57,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 92 states have (on average 1.0978260869565217) internal successors, (101), 93 states have internal predecessors, (101), 63 states have call successors, (63), 14 states have call predecessors, (63), 14 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-06 22:55:57,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 226 transitions. [2024-11-06 22:55:57,357 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 226 transitions. Word has length 142 [2024-11-06 22:55:57,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:57,357 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 226 transitions. [2024-11-06 22:55:57,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 12 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (40), 12 states have call predecessors, (40), 12 states have call successors, (40) [2024-11-06 22:55:57,357 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 226 transitions. [2024-11-06 22:55:57,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-06 22:55:57,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:57,359 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 22, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:55:57,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-06 22:55:57,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-06 22:55:57,559 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:57,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:57,560 INFO L85 PathProgramCache]: Analyzing trace with hash 997653913, now seen corresponding path program 4 times [2024-11-06 22:55:57,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:57,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366003384] [2024-11-06 22:55:57,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:57,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:57,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:55:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:57,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:55:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:57,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:55:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:57,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:55:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:57,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-06 22:55:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:57,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-06 22:55:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:57,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-06 22:55:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:57,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-06 22:55:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:57,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-06 22:55:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:57,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-06 22:55:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:57,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-06 22:55:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:57,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-06 22:55:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:57,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-06 22:55:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:57,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-06 22:55:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:57,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-06 22:55:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:57,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-06 22:55:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:57,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-06 22:55:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:57,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-11-06 22:55:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:57,806 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-11-06 22:55:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:57,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-11-06 22:55:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:57,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-11-06 22:55:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:57,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-11-06 22:55:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:57,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-11-06 22:55:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:57,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-11-06 22:55:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:57,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-11-06 22:55:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:57,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-11-06 22:55:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:57,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-11-06 22:55:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:57,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-11-06 22:55:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:57,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 72 proven. 74 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2024-11-06 22:55:57,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:57,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366003384] [2024-11-06 22:55:57,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366003384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:55:57,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200031674] [2024-11-06 22:55:57,834 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 22:55:57,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:57,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:57,836 INFO L229 MonitoredProcess]: Starting monitored process 18 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 22:55:57,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-06 22:55:57,899 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 22:55:57,899 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:55:57,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-06 22:55:57,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:57,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 234 proven. 68 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2024-11-06 22:55:57,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:55:58,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 72 proven. 74 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2024-11-06 22:55:58,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200031674] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:55:58,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:55:58,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2024-11-06 22:55:58,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984405906] [2024-11-06 22:55:58,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:55:58,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-06 22:55:58,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:58,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-06 22:55:58,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2024-11-06 22:55:58,161 INFO L87 Difference]: Start difference. First operand 170 states and 226 transitions. Second operand has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 20 states have internal predecessors, (63), 17 states have call successors, (67), 2 states have call predecessors, (67), 3 states have return successors, (67), 17 states have call predecessors, (67), 17 states have call successors, (67) [2024-11-06 22:55:58,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:58,422 INFO L93 Difference]: Finished difference Result 174 states and 229 transitions. [2024-11-06 22:55:58,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-06 22:55:58,424 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 20 states have internal predecessors, (63), 17 states have call successors, (67), 2 states have call predecessors, (67), 3 states have return successors, (67), 17 states have call predecessors, (67), 17 states have call successors, (67) Word has length 167 [2024-11-06 22:55:58,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:58,424 INFO L225 Difference]: With dead ends: 174 [2024-11-06 22:55:58,425 INFO L226 Difference]: Without dead ends: 0 [2024-11-06 22:55:58,426 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 375 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=616, Unknown=0, NotChecked=0, Total=756 [2024-11-06 22:55:58,426 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 22 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:55:58,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 674 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:55:58,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-06 22:55:58,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-06 22:55:58,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:55:58,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-06 22:55:58,427 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 167 [2024-11-06 22:55:58,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:58,427 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-06 22:55:58,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 20 states have internal predecessors, (63), 17 states have call successors, (67), 2 states have call predecessors, (67), 3 states have return successors, (67), 17 states have call predecessors, (67), 17 states have call successors, (67) [2024-11-06 22:55:58,427 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-06 22:55:58,427 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-06 22:55:58,430 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-06 22:55:58,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-06 22:55:58,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:58,633 INFO L407 BasicCegarLoop]: Path program histogram: [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:55:58,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-06 22:56:01,748 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-06 22:56:01,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:56:01 BoogieIcfgContainer [2024-11-06 22:56:01,766 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-06 22:56:01,766 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-06 22:56:01,766 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-06 22:56:01,766 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-06 22:56:01,767 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:55:33" (3/4) ... [2024-11-06 22:56:01,768 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-06 22:56:01,773 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-06 22:56:01,773 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-06 22:56:01,775 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-06 22:56:01,775 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-06 22:56:01,775 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-06 22:56:01,775 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-06 22:56:01,831 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-06 22:56:01,832 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-06 22:56:01,832 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-06 22:56:01,832 INFO L158 Benchmark]: Toolchain (without parser) took 28682.93ms. Allocated memory was 142.6MB in the beginning and 327.2MB in the end (delta: 184.5MB). Free memory was 117.2MB in the beginning and 265.8MB in the end (delta: -148.6MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. [2024-11-06 22:56:01,833 INFO L158 Benchmark]: CDTParser took 0.68ms. Allocated memory is still 117.4MB. Free memory is still 81.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 22:56:01,833 INFO L158 Benchmark]: CACSL2BoogieTranslator took 152.42ms. Allocated memory is still 142.6MB. Free memory was 117.1MB in the beginning and 105.6MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 22:56:01,833 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.26ms. Allocated memory is still 142.6MB. Free memory was 105.6MB in the beginning and 104.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 22:56:01,833 INFO L158 Benchmark]: Boogie Preprocessor took 32.37ms. Allocated memory is still 142.6MB. Free memory was 104.4MB in the beginning and 103.0MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 22:56:01,833 INFO L158 Benchmark]: RCFGBuilder took 250.43ms. Allocated memory is still 142.6MB. Free memory was 103.0MB in the beginning and 91.1MB in the end (delta: 11.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 22:56:01,833 INFO L158 Benchmark]: TraceAbstraction took 28153.73ms. Allocated memory was 142.6MB in the beginning and 327.2MB in the end (delta: 184.5MB). Free memory was 90.6MB in the beginning and 270.5MB in the end (delta: -179.9MB). Peak memory consumption was 166.6MB. Max. memory is 16.1GB. [2024-11-06 22:56:01,834 INFO L158 Benchmark]: Witness Printer took 65.91ms. Allocated memory is still 327.2MB. Free memory was 270.5MB in the beginning and 265.8MB in the end (delta: 4.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 22:56:01,834 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68ms. Allocated memory is still 117.4MB. Free memory is still 81.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 152.42ms. Allocated memory is still 142.6MB. Free memory was 117.1MB in the beginning and 105.6MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.26ms. Allocated memory is still 142.6MB. Free memory was 105.6MB in the beginning and 104.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.37ms. Allocated memory is still 142.6MB. Free memory was 104.4MB in the beginning and 103.0MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 250.43ms. Allocated memory is still 142.6MB. Free memory was 103.0MB in the beginning and 91.1MB in the end (delta: 11.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 28153.73ms. Allocated memory was 142.6MB in the beginning and 327.2MB in the end (delta: 184.5MB). Free memory was 90.6MB in the beginning and 270.5MB in the end (delta: -179.9MB). Peak memory consumption was 166.6MB. Max. memory is 16.1GB. * Witness Printer took 65.91ms. Allocated memory is still 327.2MB. Free memory was 270.5MB in the beginning and 265.8MB in the end (delta: 4.7MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 25.0s, OverallIterations: 19, TraceHistogramMax: 23, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 9.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 666 SdHoareTripleChecker+Valid, 5.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 584 mSDsluCounter, 5775 SdHoareTripleChecker+Invalid, 4.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4942 mSDsCounter, 680 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4452 IncrementalHoareTripleChecker+Invalid, 5132 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 680 mSolverCounterUnsat, 833 mSDtfsCounter, 4452 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3064 GetRequests, 2699 SyntacticMatches, 26 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1979 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230occurred in iteration=17, InterpolantAutomatonStates: 239, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 19 MinimizatonAttempts, 117 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 9.6s InterpolantComputationTime, 3227 NumberOfCodeBlocks, 3128 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 3391 ConstructedInterpolants, 0 QuantifiedInterpolants, 11954 SizeOfPredicates, 51 NumberOfNonLiveVariables, 3490 ConjunctsInSsa, 405 ConjunctsInUnsatCore, 35 InterpolantComputations, 4 PerfectInterpolantSequences, 12114/12887 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: (((((((((((((((((((yy == ((long long) y * y)) && (p == 1)) && (1 <= y)) && (a == c)) && (b == y)) && (b <= 2)) && (r == 0)) && (q == 0)) && (k == 0)) && (1 <= x)) && (xy == ((long long) x * y))) && (a == x)) && (x <= 2)) && (s == 1)) || ((((((((((((b == 1) && (2 == xy)) && (p == 0)) && (2 == y)) && (x == 1)) && (q == 1)) && (k == 0)) && (s == 0)) && (r == 1)) && (2 == a)) && (yy == 4)) && (2 == c))) || (((((((((((((k == 1) && (yy == ((long long) y * y))) && (p == 1)) && (1 <= y)) && (b == y)) && (0 <= c)) && (r == 0)) && (q == 0)) && (xy == ((long long) x * y))) && (a == x)) && (x <= 2)) && (s == 1)) && (((__int128) b + c) == x))) || ((((((((((((c == 0) && (b == 1)) && (2 == xy)) && (p == 0)) && (2 == y)) && (x == 1)) && (q == 1)) && (s == 0)) && (r == 1)) && (2 == a)) && (yy == 4)) && (2 == k))) || (((((((((((((c == 0) && (a == (c + ((__int128) b * k)))) && (yy == ((long long) y * y))) && (p == 1)) && (1 <= y)) && (b == y)) && (r == 0)) && (q == 0)) && (1 <= x)) && (xy == ((long long) x * y))) && (a == x)) && (x <= 2)) && (s == 1))) || ((((((((((((k == 1) && (b == 1)) && (2 == xy)) && (p == 0)) && (c == 1)) && (2 == y)) && (x == 1)) && (q == 1)) && (s == 0)) && (r == 1)) && (2 == a)) && (yy == 4))) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: (((((((((((((b == 1) && (yy == ((long long) y * y))) && (p == 0)) && (2 == y)) && (x == 1)) && (q == 1)) && (s == 0)) && (r == 1)) && (2 == a)) && (xy == y)) || ((((((((((((yy == ((long long) y * y)) && (p == 1)) && (1 <= y)) && (b == y)) && (b <= 2)) && (r == 0)) && (q == 0)) && (1 <= x)) && (xy == ((long long) x * y))) && (a == x)) && (x <= 2)) && (s == 1))) || (((((((((((long long) x + 1) <= y) && (p == 1)) && (y <= 2)) && (((__int128) b + 1) <= x)) && (r == 0)) && (((__int128) 2 + q) == 0)) && (a == x)) && (y == ((__int128) ((long long) 2 * x) + b))) && (s == 1))) || (((((((((p == 0) && (y <= 2)) && (a == y)) && (b == 0)) && (1 <= a)) && (1 <= x)) && (r == 1)) && (x <= 2)) && ((((__int128) s * y) + ((__int128) q * x)) == 0))) - ProcedureContractResult [Line: 7]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 10]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-11-06 22:56:01,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE