./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound100.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_valuebound100.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', 'f5697d76d3e5ae232d0e056ee307ac88ca38e983a94c4765bc5d51f77e79d2f7'] 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_valuebound100.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 f5697d76d3e5ae232d0e056ee307ac88ca38e983a94c4765bc5d51f77e79d2f7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 22:55:24,221 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 22:55:24,301 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 22:55:24,306 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 22:55:24,306 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 22:55:24,335 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 22:55:24,336 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 22:55:24,336 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 22:55:24,337 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 22:55:24,337 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 22:55:24,337 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 22:55:24,338 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 22:55:24,339 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 22:55:24,339 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 22:55:24,339 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 22:55:24,339 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 22:55:24,339 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 22:55:24,339 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 22:55:24,339 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 22:55:24,339 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 22:55:24,339 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 22:55:24,339 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 22:55:24,339 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 22:55:24,339 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 22:55:24,339 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 22:55:24,339 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 22:55:24,339 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 22:55:24,340 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 22:55:24,340 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 22:55:24,340 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 22:55:24,340 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 22:55:24,340 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 22:55:24,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 22:55:24,340 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 22:55:24,340 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 22:55:24,340 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 22:55:24,340 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 22:55:24,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 22:55:24,340 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 22:55:24,340 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 22:55:24,340 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 22:55:24,340 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 22:55:24,341 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 -> f5697d76d3e5ae232d0e056ee307ac88ca38e983a94c4765bc5d51f77e79d2f7 [2024-11-06 22:55:24,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 22:55:24,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 22:55:24,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 22:55:24,619 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 22:55:24,619 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 22:55:24,620 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound100.c [2024-11-06 22:55:25,844 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 22:55:26,025 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 22:55:26,025 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound100.c [2024-11-06 22:55:26,031 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ac05c306d/386d8ee9969444c8aedfc25ea333f844/FLAG50a95fde5 [2024-11-06 22:55:26,041 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ac05c306d/386d8ee9969444c8aedfc25ea333f844 [2024-11-06 22:55:26,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 22:55:26,043 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 22:55:26,044 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 22:55:26,044 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 22:55:26,048 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 22:55:26,048 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:55:26" (1/1) ... [2024-11-06 22:55:26,049 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@594ab647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:26, skipping insertion in model container [2024-11-06 22:55:26,049 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:55:26" (1/1) ... [2024-11-06 22:55:26,060 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 22:55:26,167 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_valuebound100.c[490,503] [2024-11-06 22:55:26,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 22:55:26,200 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 22:55:26,208 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_valuebound100.c[490,503] [2024-11-06 22:55:26,216 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 22:55:26,226 INFO L204 MainTranslator]: Completed translation [2024-11-06 22:55:26,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:26 WrapperNode [2024-11-06 22:55:26,227 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 22:55:26,228 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 22:55:26,229 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 22:55:26,229 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 22:55:26,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:26" (1/1) ... [2024-11-06 22:55:26,243 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:26" (1/1) ... [2024-11-06 22:55:26,260 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 79 [2024-11-06 22:55:26,262 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 22:55:26,262 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 22:55:26,262 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 22:55:26,263 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 22:55:26,269 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:26" (1/1) ... [2024-11-06 22:55:26,269 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:26" (1/1) ... [2024-11-06 22:55:26,272 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:26" (1/1) ... [2024-11-06 22:55:26,286 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 22:55:26,286 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:26" (1/1) ... [2024-11-06 22:55:26,286 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:26" (1/1) ... [2024-11-06 22:55:26,289 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:26" (1/1) ... [2024-11-06 22:55:26,294 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:26" (1/1) ... [2024-11-06 22:55:26,295 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:26" (1/1) ... [2024-11-06 22:55:26,296 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:26" (1/1) ... [2024-11-06 22:55:26,300 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 22:55:26,301 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 22:55:26,301 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 22:55:26,301 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 22:55:26,302 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:26" (1/1) ... [2024-11-06 22:55:26,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 22:55:26,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:26,335 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 22:55:26,337 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 22:55:26,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 22:55:26,356 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-06 22:55:26,356 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-06 22:55:26,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 22:55:26,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 22:55:26,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 22:55:26,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-06 22:55:26,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-06 22:55:26,405 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 22:55:26,406 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 22:55:26,543 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-06 22:55:26,543 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 22:55:26,550 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 22:55:26,550 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-06 22:55:26,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:55:26 BoogieIcfgContainer [2024-11-06 22:55:26,551 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 22:55:26,552 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 22:55:26,552 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 22:55:26,556 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 22:55:26,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:55:26" (1/3) ... [2024-11-06 22:55:26,557 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d5d4983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:55:26, skipping insertion in model container [2024-11-06 22:55:26,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:26" (2/3) ... [2024-11-06 22:55:26,557 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d5d4983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:55:26, skipping insertion in model container [2024-11-06 22:55:26,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:55:26" (3/3) ... [2024-11-06 22:55:26,558 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound100.c [2024-11-06 22:55:26,571 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 22:55:26,571 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 22:55:26,611 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 22:55:26,621 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;@6ceb10a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 22:55:26,621 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 22:55:26,626 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 22:55:26,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-06 22:55:26,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:26,631 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 22:55:26,631 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:26,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:26,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1146169762, now seen corresponding path program 1 times [2024-11-06 22:55:26,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:26,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000884946] [2024-11-06 22:55:26,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:26,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:26,749 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:55:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:26,758 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:55:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:26,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:55:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:26,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:55:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:26,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-06 22:55:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:26,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-06 22:55:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:26,798 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 22:55:26,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:26,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000884946] [2024-11-06 22:55:26,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000884946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:55:26,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:55:26,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 22:55:26,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954617490] [2024-11-06 22:55:26,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:55:26,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-06 22:55:26,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:26,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-06 22:55:26,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 22:55:26,818 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 22:55:26,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:26,835 INFO L93 Difference]: Finished difference Result 67 states and 112 transitions. [2024-11-06 22:55:26,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-06 22:55:26,836 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 22:55:26,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:26,841 INFO L225 Difference]: With dead ends: 67 [2024-11-06 22:55:26,841 INFO L226 Difference]: Without dead ends: 31 [2024-11-06 22:55:26,843 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 22:55:26,845 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 22:55:26,846 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 22:55:26,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-06 22:55:26,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-06 22:55:26,874 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 22:55:26,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2024-11-06 22:55:26,879 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 39 [2024-11-06 22:55:26,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:26,879 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2024-11-06 22:55:26,879 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 22:55:26,879 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2024-11-06 22:55:26,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-06 22:55:26,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:26,890 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 22:55:26,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 22:55:26,890 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:26,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:26,891 INFO L85 PathProgramCache]: Analyzing trace with hash 846808023, now seen corresponding path program 1 times [2024-11-06 22:55:26,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:26,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406333763] [2024-11-06 22:55:26,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:26,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:27,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:55:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:27,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:55:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:27,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:55:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:27,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:55:27,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:27,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-06 22:55:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:27,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-06 22:55:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:27,201 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 22:55:27,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:27,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406333763] [2024-11-06 22:55:27,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406333763] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:55:27,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97296379] [2024-11-06 22:55:27,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:27,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:27,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:27,204 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 22:55:27,205 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 22:55:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:27,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-06 22:55:27,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:27,528 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 22:55:27,530 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:55:27,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97296379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:55:27,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 22:55:27,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 11 [2024-11-06 22:55:27,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281073756] [2024-11-06 22:55:27,709 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 22:55:27,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-06 22:55:27,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:27,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-06 22:55:27,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-06 22:55:27,713 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 22:55:27,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:27,977 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2024-11-06 22:55:27,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-06 22:55:27,977 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 22:55:27,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:27,980 INFO L225 Difference]: With dead ends: 52 [2024-11-06 22:55:27,980 INFO L226 Difference]: Without dead ends: 44 [2024-11-06 22:55:27,980 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 22:55:27,981 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 35 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 22:55:27,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 173 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 22:55:27,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-06 22:55:27,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2024-11-06 22:55:27,993 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 22:55:27,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions. [2024-11-06 22:55:27,995 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 40 [2024-11-06 22:55:27,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:27,995 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 58 transitions. [2024-11-06 22:55:27,995 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 22:55:27,995 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions. [2024-11-06 22:55:27,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-06 22:55:27,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:27,996 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 22:55:28,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-06 22:55:28,197 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 22:55:28,197 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:28,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:28,198 INFO L85 PathProgramCache]: Analyzing trace with hash 481927254, now seen corresponding path program 1 times [2024-11-06 22:55:28,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:28,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547736693] [2024-11-06 22:55:28,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:28,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:55:28,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1326218823] [2024-11-06 22:55:28,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:28,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:28,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:28,231 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 22:55:28,232 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 22:55:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:28,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 22:55:28,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:28,312 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 22:55:28,312 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 22:55:28,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:28,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547736693] [2024-11-06 22:55:28,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:55:28,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326218823] [2024-11-06 22:55:28,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326218823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:55:28,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:55:28,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:55:28,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251942037] [2024-11-06 22:55:28,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:55:28,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:55:28,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:28,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:55:28,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:55:28,314 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 22:55:28,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:28,363 INFO L93 Difference]: Finished difference Result 62 states and 86 transitions. [2024-11-06 22:55:28,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:55:28,364 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 22:55:28,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:28,365 INFO L225 Difference]: With dead ends: 62 [2024-11-06 22:55:28,365 INFO L226 Difference]: Without dead ends: 60 [2024-11-06 22:55:28,365 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 22:55:28,366 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 22:55:28,366 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 22:55:28,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-06 22:55:28,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 51. [2024-11-06 22:55:28,381 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 22:55:28,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2024-11-06 22:55:28,383 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 41 [2024-11-06 22:55:28,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:28,383 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2024-11-06 22:55:28,383 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 22:55:28,383 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2024-11-06 22:55:28,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-06 22:55:28,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:28,388 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 22:55:28,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-06 22:55:28,589 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 22:55:28,589 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:28,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:28,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1626076469, now seen corresponding path program 1 times [2024-11-06 22:55:28,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:28,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722856870] [2024-11-06 22:55:28,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:28,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:55:28,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1271325783] [2024-11-06 22:55:28,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:28,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:28,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:28,619 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 22:55:28,620 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 22:55:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:28,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-06 22:55:28,673 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:28,742 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 22:55:28,742 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 22:55:28,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:28,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722856870] [2024-11-06 22:55:28,742 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:55:28,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271325783] [2024-11-06 22:55:28,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271325783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:55:28,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:55:28,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:55:28,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779848103] [2024-11-06 22:55:28,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:55:28,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:55:28,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:28,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:55:28,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:55:28,744 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 22:55:28,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:28,785 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2024-11-06 22:55:28,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:55:28,785 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 22:55:28,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:28,787 INFO L225 Difference]: With dead ends: 58 [2024-11-06 22:55:28,787 INFO L226 Difference]: Without dead ends: 56 [2024-11-06 22:55:28,787 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 22:55:28,788 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 22:55:28,788 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 22:55:28,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-06 22:55:28,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2024-11-06 22:55:28,796 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 22:55:28,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2024-11-06 22:55:28,797 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 46 [2024-11-06 22:55:28,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:28,797 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2024-11-06 22:55:28,797 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 22:55:28,797 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2024-11-06 22:55:28,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-06 22:55:28,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:28,798 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 22:55:28,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-06 22:55:29,002 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 22:55:29,003 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:29,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:29,003 INFO L85 PathProgramCache]: Analyzing trace with hash -670274197, now seen corresponding path program 1 times [2024-11-06 22:55:29,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:29,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386769725] [2024-11-06 22:55:29,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:29,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:55:29,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1567477877] [2024-11-06 22:55:29,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:29,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:29,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:29,033 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 22:55:29,035 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 22:55:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:29,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-06 22:55:29,102 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:29,394 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 22:55:29,395 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:55:29,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:29,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386769725] [2024-11-06 22:55:29,442 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:55:29,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567477877] [2024-11-06 22:55:29,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567477877] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:55:29,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-06 22:55:29,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-11-06 22:55:29,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938625746] [2024-11-06 22:55:29,442 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-06 22:55:29,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-06 22:55:29,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:29,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-06 22:55:29,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-06 22:55:29,444 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 22:55:29,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:29,555 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2024-11-06 22:55:29,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-06 22:55:29,555 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 22:55:29,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:29,556 INFO L225 Difference]: With dead ends: 62 [2024-11-06 22:55:29,556 INFO L226 Difference]: Without dead ends: 60 [2024-11-06 22:55:29,557 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 22:55:29,557 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 22:55:29,558 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 22:55:29,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-06 22:55:29,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2024-11-06 22:55:29,567 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 22:55:29,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2024-11-06 22:55:29,568 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 56 [2024-11-06 22:55:29,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:29,568 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2024-11-06 22:55:29,569 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 22:55:29,569 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2024-11-06 22:55:29,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-06 22:55:29,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:29,570 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 22:55:29,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-06 22:55:29,773 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 22:55:29,774 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:29,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:29,774 INFO L85 PathProgramCache]: Analyzing trace with hash 815241237, now seen corresponding path program 1 times [2024-11-06 22:55:29,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:29,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690988024] [2024-11-06 22:55:29,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:29,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:55:29,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349249482] [2024-11-06 22:55:29,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:29,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:29,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:29,795 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 22:55:29,796 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 22:55:29,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:29,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-06 22:55:29,853 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:29,921 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 22:55:29,922 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:55:30,014 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 22:55:30,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:30,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690988024] [2024-11-06 22:55:30,014 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:55:30,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349249482] [2024-11-06 22:55:30,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349249482] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:55:30,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 22:55:30,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2024-11-06 22:55:30,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466382489] [2024-11-06 22:55:30,015 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 22:55:30,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 22:55:30,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:30,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 22:55:30,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-06 22:55:30,016 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 22:55:30,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:30,119 INFO L93 Difference]: Finished difference Result 87 states and 118 transitions. [2024-11-06 22:55:30,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-06 22:55:30,121 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 22:55:30,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:30,123 INFO L225 Difference]: With dead ends: 87 [2024-11-06 22:55:30,123 INFO L226 Difference]: Without dead ends: 85 [2024-11-06 22:55:30,123 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 22:55:30,124 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 8 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 22:55:30,124 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 22:55:30,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-06 22:55:30,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 55. [2024-11-06 22:55:30,141 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 22:55:30,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2024-11-06 22:55:30,144 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 63 [2024-11-06 22:55:30,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:30,146 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2024-11-06 22:55:30,146 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 22:55:30,146 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2024-11-06 22:55:30,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-06 22:55:30,147 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:30,147 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 22:55:30,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-06 22:55:30,347 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 22:55:30,348 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:30,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:30,348 INFO L85 PathProgramCache]: Analyzing trace with hash -759965185, now seen corresponding path program 1 times [2024-11-06 22:55:30,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:30,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374533842] [2024-11-06 22:55:30,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:30,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:30,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:55:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:30,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:55:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:30,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:55:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:30,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:55:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:30,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-06 22:55:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:30,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-06 22:55:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:30,563 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-06 22:55:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:30,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-06 22:55:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:30,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-06 22:55:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:30,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-06 22:55:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:30,586 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 22:55:30,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:30,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374533842] [2024-11-06 22:55:30,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374533842] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:55:30,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693815146] [2024-11-06 22:55:30,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:30,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:30,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:30,590 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 22:55:30,592 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 22:55:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:30,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-06 22:55:30,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:30,716 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 22:55:30,717 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:55:30,822 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 22:55:30,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693815146] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:55:30,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:55:30,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2024-11-06 22:55:30,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875948931] [2024-11-06 22:55:30,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:55:30,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-06 22:55:30,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:30,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-06 22:55:30,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-06 22:55:30,824 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 22:55:31,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:31,002 INFO L93 Difference]: Finished difference Result 102 states and 142 transitions. [2024-11-06 22:55:31,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-06 22:55:31,004 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 22:55:31,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:31,006 INFO L225 Difference]: With dead ends: 102 [2024-11-06 22:55:31,007 INFO L226 Difference]: Without dead ends: 94 [2024-11-06 22:55:31,007 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 22:55:31,007 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 22:55:31,008 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 22:55:31,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-06 22:55:31,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2024-11-06 22:55:31,026 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 22:55:31,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 118 transitions. [2024-11-06 22:55:31,028 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 118 transitions. Word has length 65 [2024-11-06 22:55:31,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:31,028 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 118 transitions. [2024-11-06 22:55:31,028 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 22:55:31,028 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 118 transitions. [2024-11-06 22:55:31,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-06 22:55:31,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:31,029 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 22:55:31,045 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-06 22:55:31,231 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 22:55:31,232 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:31,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:31,232 INFO L85 PathProgramCache]: Analyzing trace with hash -696294669, now seen corresponding path program 1 times [2024-11-06 22:55:31,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:31,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798022371] [2024-11-06 22:55:31,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:31,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:55:31,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [861265645] [2024-11-06 22:55:31,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:31,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:31,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:31,251 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 22:55:31,253 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 22:55:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:31,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-06 22:55:31,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:31,426 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 22:55:31,427 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:55:31,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:31,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798022371] [2024-11-06 22:55:31,463 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:55:31,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861265645] [2024-11-06 22:55:31,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861265645] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:55:31,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-06 22:55:31,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2024-11-06 22:55:31,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751008903] [2024-11-06 22:55:31,464 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-06 22:55:31,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-06 22:55:31,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:31,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-06 22:55:31,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-06 22:55:31,465 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 22:55:31,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:31,581 INFO L93 Difference]: Finished difference Result 120 states and 169 transitions. [2024-11-06 22:55:31,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 22:55:31,582 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 22:55:31,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:31,583 INFO L225 Difference]: With dead ends: 120 [2024-11-06 22:55:31,583 INFO L226 Difference]: Without dead ends: 117 [2024-11-06 22:55:31,583 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 22:55:31,584 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 22:55:31,584 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 22:55:31,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-06 22:55:31,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 114. [2024-11-06 22:55:31,612 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 22:55:31,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 162 transitions. [2024-11-06 22:55:31,614 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 162 transitions. Word has length 71 [2024-11-06 22:55:31,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:31,615 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 162 transitions. [2024-11-06 22:55:31,615 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 22:55:31,615 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 162 transitions. [2024-11-06 22:55:31,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-06 22:55:31,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:31,619 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 22:55:31,635 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 22:55:31,819 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 22:55:31,820 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:31,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:31,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1352497678, now seen corresponding path program 2 times [2024-11-06 22:55:31,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:31,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415924745] [2024-11-06 22:55:31,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:31,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:55:31,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [16772652] [2024-11-06 22:55:31,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 22:55:31,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:31,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:31,846 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 22:55:31,847 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 22:55:31,905 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 22:55:31,906 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:55:31,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-06 22:55:31,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:32,097 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 22:55:32,098 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:55:32,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:32,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415924745] [2024-11-06 22:55:32,143 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:55:32,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16772652] [2024-11-06 22:55:32,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16772652] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:55:32,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-06 22:55:32,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2024-11-06 22:55:32,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639117765] [2024-11-06 22:55:32,145 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-06 22:55:32,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 22:55:32,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:32,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 22:55:32,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-06 22:55:32,147 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 22:55:32,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:32,288 INFO L93 Difference]: Finished difference Result 126 states and 172 transitions. [2024-11-06 22:55:32,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-06 22:55:32,288 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 22:55:32,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:32,290 INFO L225 Difference]: With dead ends: 126 [2024-11-06 22:55:32,290 INFO L226 Difference]: Without dead ends: 124 [2024-11-06 22:55:32,290 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 22:55:32,291 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 22:55:32,291 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 22:55:32,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-06 22:55:32,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2024-11-06 22:55:32,319 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 22:55:32,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 168 transitions. [2024-11-06 22:55:32,321 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 168 transitions. Word has length 76 [2024-11-06 22:55:32,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:32,321 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 168 transitions. [2024-11-06 22:55:32,322 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 22:55:32,323 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 168 transitions. [2024-11-06 22:55:32,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-06 22:55:32,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:32,324 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 22:55:32,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-06 22:55:32,526 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 22:55:32,526 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:32,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:32,527 INFO L85 PathProgramCache]: Analyzing trace with hash -421153901, now seen corresponding path program 3 times [2024-11-06 22:55:32,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:32,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019967811] [2024-11-06 22:55:32,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:32,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:55:32,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [532364397] [2024-11-06 22:55:32,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 22:55:32,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:32,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:32,549 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 22:55:32,550 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 22:55:32,613 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-06 22:55:32,613 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:55:32,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-06 22:55:32,617 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:34,588 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 22:55:34,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:55:34,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:34,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019967811] [2024-11-06 22:55:34,817 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:55:34,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532364397] [2024-11-06 22:55:34,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532364397] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:55:34,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-06 22:55:34,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-06 22:55:34,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365533964] [2024-11-06 22:55:34,818 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-06 22:55:34,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-06 22:55:34,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:34,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-06 22:55:34,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2024-11-06 22:55:34,819 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 22:55:35,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:35,499 INFO L93 Difference]: Finished difference Result 134 states and 178 transitions. [2024-11-06 22:55:35,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-06 22:55:35,500 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 22:55:35,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:35,501 INFO L225 Difference]: With dead ends: 134 [2024-11-06 22:55:35,503 INFO L226 Difference]: Without dead ends: 132 [2024-11-06 22:55:35,503 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2024-11-06 22:55:35,504 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 39 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2024-11-06 22:55:35,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 241 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-06 22:55:35,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-06 22:55:35,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2024-11-06 22:55:35,534 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 22:55:35,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 174 transitions. [2024-11-06 22:55:35,535 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 174 transitions. Word has length 81 [2024-11-06 22:55:35,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:35,536 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 174 transitions. [2024-11-06 22:55:35,536 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 22:55:35,536 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 174 transitions. [2024-11-06 22:55:35,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-06 22:55:35,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:35,537 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 22:55:35,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-06 22:55:35,738 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 22:55:35,739 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:35,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:35,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1712962370, now seen corresponding path program 1 times [2024-11-06 22:55:35,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:35,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422234195] [2024-11-06 22:55:35,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:35,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:55:35,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1115722874] [2024-11-06 22:55:35,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:35,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:35,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:35,759 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 22:55:35,760 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 22:55:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:35,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-06 22:55:35,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:36,257 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 22:55:36,257 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:55:37,369 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 22:55:37,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:37,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422234195] [2024-11-06 22:55:37,370 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:55:37,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115722874] [2024-11-06 22:55:37,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115722874] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:55:37,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 22:55:37,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2024-11-06 22:55:37,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629561912] [2024-11-06 22:55:37,370 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 22:55:37,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-06 22:55:37,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:37,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-06 22:55:37,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-11-06 22:55:37,371 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 22:55:40,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:40,709 INFO L93 Difference]: Finished difference Result 230 states and 337 transitions. [2024-11-06 22:55:40,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-06 22:55:40,709 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 22:55:40,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:40,714 INFO L225 Difference]: With dead ends: 230 [2024-11-06 22:55:40,714 INFO L226 Difference]: Without dead ends: 226 [2024-11-06 22:55:40,715 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=255, Invalid=1151, Unknown=0, NotChecked=0, Total=1406 [2024-11-06 22:55:40,716 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 75 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s 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, 2.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:55:40,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 459 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-06 22:55:40,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-11-06 22:55:40,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 223. [2024-11-06 22:55:40,797 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 22:55:40,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 328 transitions. [2024-11-06 22:55:40,799 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 328 transitions. Word has length 87 [2024-11-06 22:55:40,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:40,799 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 328 transitions. [2024-11-06 22:55:40,800 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 22:55:40,800 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 328 transitions. [2024-11-06 22:55:40,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-06 22:55:40,801 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:40,802 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 22:55:40,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-06 22:55:41,002 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 22:55:41,002 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:41,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:41,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1006372811, now seen corresponding path program 4 times [2024-11-06 22:55:41,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:41,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656649736] [2024-11-06 22:55:41,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:41,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:41,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:55:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:41,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:55:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:41,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:55:41,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:41,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:55:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:41,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-06 22:55:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:41,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-06 22:55:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:41,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-06 22:55:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:41,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-06 22:55:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:41,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-06 22:55:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:41,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-06 22:55:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:41,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-06 22:55:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:41,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-06 22:55:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:41,135 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-06 22:55:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:41,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-06 22:55:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:41,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-06 22:55:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:41,144 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 22:55:41,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:41,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656649736] [2024-11-06 22:55:41,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656649736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:55:41,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:55:41,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:55:41,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078253170] [2024-11-06 22:55:41,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:55:41,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:55:41,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:41,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:55:41,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:55:41,146 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 22:55:41,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:41,245 INFO L93 Difference]: Finished difference Result 276 states and 404 transitions. [2024-11-06 22:55:41,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 22:55:41,245 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 22:55:41,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:41,247 INFO L225 Difference]: With dead ends: 276 [2024-11-06 22:55:41,247 INFO L226 Difference]: Without dead ends: 202 [2024-11-06 22:55:41,248 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 22:55:41,249 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 22:55:41,249 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 22:55:41,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-06 22:55:41,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 190. [2024-11-06 22:55:41,305 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 22:55:41,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 269 transitions. [2024-11-06 22:55:41,308 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 269 transitions. Word has length 96 [2024-11-06 22:55:41,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:41,309 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 269 transitions. [2024-11-06 22:55:41,309 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 22:55:41,309 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 269 transitions. [2024-11-06 22:55:41,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-06 22:55:41,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:41,310 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 22:55:41,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-06 22:55:41,310 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:41,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:41,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1899970478, now seen corresponding path program 1 times [2024-11-06 22:55:41,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:41,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944241296] [2024-11-06 22:55:41,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:41,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:55:41,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2083005878] [2024-11-06 22:55:41,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:41,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:41,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:41,339 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 22:55:41,341 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 22:55:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:41,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-06 22:55:41,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:42,161 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 74 proven. 35 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2024-11-06 22:55:42,161 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:55:52,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:52,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944241296] [2024-11-06 22:55:52,667 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:55:52,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083005878] [2024-11-06 22:55:52,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083005878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:55:52,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-06 22:55:52,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-06 22:55:52,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646556375] [2024-11-06 22:55:52,668 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-06 22:55:52,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-06 22:55:52,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:52,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-06 22:55:52,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2024-11-06 22:55:52,669 INFO L87 Difference]: Start difference. First operand 190 states and 269 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 13 states have internal predecessors, (29), 6 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2024-11-06 22:55:53,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:53,258 INFO L93 Difference]: Finished difference Result 202 states and 279 transitions. [2024-11-06 22:55:53,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-06 22:55:53,258 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 13 states have internal predecessors, (29), 6 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) Word has length 103 [2024-11-06 22:55:53,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:53,260 INFO L225 Difference]: With dead ends: 202 [2024-11-06 22:55:53,260 INFO L226 Difference]: Without dead ends: 200 [2024-11-06 22:55:53,260 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2024-11-06 22:55:53,261 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 28 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 22:55:53,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 258 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 22:55:53,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-11-06 22:55:53,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 198. [2024-11-06 22:55:53,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 104 states have (on average 1.1634615384615385) internal successors, (121), 107 states have internal predecessors, (121), 78 states have call successors, (78), 15 states have call predecessors, (78), 15 states have return successors, (76), 75 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-06 22:55:53,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 275 transitions. [2024-11-06 22:55:53,316 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 275 transitions. Word has length 103 [2024-11-06 22:55:53,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:53,316 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 275 transitions. [2024-11-06 22:55:53,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 13 states have internal predecessors, (29), 6 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2024-11-06 22:55:53,316 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 275 transitions. [2024-11-06 22:55:53,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-06 22:55:53,317 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:53,317 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 22:55:53,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-06 22:55:53,518 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 22:55:53,518 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:53,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:53,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1451333771, now seen corresponding path program 1 times [2024-11-06 22:55:53,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:53,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861055903] [2024-11-06 22:55:53,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:53,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:53,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:55:53,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:53,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:55:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:53,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:55:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:53,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:55:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:53,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-06 22:55:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:53,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-06 22:55:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:53,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-06 22:55:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:53,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-06 22:55:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:53,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-06 22:55:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:53,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-06 22:55:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:53,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-06 22:55:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:53,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-06 22:55:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:53,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-06 22:55:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:53,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-06 22:55:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:53,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-06 22:55:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:53,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-06 22:55:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:53,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-06 22:55:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:53,749 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-11-06 22:55:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:53,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-11-06 22:55:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:53,754 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 22:55:53,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:53,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861055903] [2024-11-06 22:55:53,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861055903] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:55:53,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619956499] [2024-11-06 22:55:53,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:53,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:53,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:53,757 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 22:55:53,759 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 22:55:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:55:53,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 22:55:53,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:53,867 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 22:55:53,868 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:55:53,963 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 22:55:53,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619956499] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:55:53,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:55:53,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2024-11-06 22:55:53,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121397695] [2024-11-06 22:55:53,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:55:53,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 22:55:53,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:53,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 22:55:53,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-06 22:55:53,964 INFO L87 Difference]: Start difference. First operand 198 states and 275 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 22:55:54,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:54,182 INFO L93 Difference]: Finished difference Result 224 states and 314 transitions. [2024-11-06 22:55:54,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-06 22:55:54,183 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 22:55:54,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:54,184 INFO L225 Difference]: With dead ends: 224 [2024-11-06 22:55:54,185 INFO L226 Difference]: Without dead ends: 212 [2024-11-06 22:55:54,185 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 22:55:54,186 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 22:55:54,186 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 22:55:54,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-06 22:55:54,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 193. [2024-11-06 22:55:54,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 101 states have (on average 1.1584158415841583) internal successors, (117), 103 states have internal predecessors, (117), 77 states have call successors, (77), 14 states have call predecessors, (77), 14 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2024-11-06 22:55:54,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 269 transitions. [2024-11-06 22:55:54,234 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 269 transitions. Word has length 117 [2024-11-06 22:55:54,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:54,234 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 269 transitions. [2024-11-06 22:55:54,234 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 22:55:54,234 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 269 transitions. [2024-11-06 22:55:54,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-06 22:55:54,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:54,235 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 22:55:54,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-06 22:55:54,436 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 22:55:54,436 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:54,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:54,437 INFO L85 PathProgramCache]: Analyzing trace with hash -50105014, now seen corresponding path program 2 times [2024-11-06 22:55:54,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:54,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986611210] [2024-11-06 22:55:54,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:54,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:55:54,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637885238] [2024-11-06 22:55:54,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 22:55:54,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:54,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:54,468 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 22:55:54,470 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 22:55:54,547 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 22:55:54,547 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:55:54,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-06 22:55:54,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:54,995 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 61 proven. 50 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2024-11-06 22:55:54,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:55:55,249 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 73 proven. 7 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2024-11-06 22:55:55,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:55,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986611210] [2024-11-06 22:55:55,250 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:55:55,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637885238] [2024-11-06 22:55:55,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637885238] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:55:55,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 22:55:55,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8] total 22 [2024-11-06 22:55:55,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686641763] [2024-11-06 22:55:55,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 22:55:55,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-06 22:55:55,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:55,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-06 22:55:55,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2024-11-06 22:55:55,251 INFO L87 Difference]: Start difference. First operand 193 states and 269 transitions. Second operand has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 19 states have internal predecessors, (50), 9 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 9 states have call predecessors, (30), 9 states have call successors, (30) [2024-11-06 22:55:57,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:55:57,653 INFO L93 Difference]: Finished difference Result 227 states and 315 transitions. [2024-11-06 22:55:57,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-06 22:55:57,654 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 19 states have internal predecessors, (50), 9 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 9 states have call predecessors, (30), 9 states have call successors, (30) Word has length 118 [2024-11-06 22:55:57,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:55:57,656 INFO L225 Difference]: With dead ends: 227 [2024-11-06 22:55:57,656 INFO L226 Difference]: Without dead ends: 224 [2024-11-06 22:55:57,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=173, Invalid=883, Unknown=0, NotChecked=0, Total=1056 [2024-11-06 22:55:57,656 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 48 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-06 22:55:57,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 551 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-06 22:55:57,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-06 22:55:57,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 166. [2024-11-06 22:55:57,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 89 states have (on average 1.1573033707865168) internal successors, (103), 90 states have internal predecessors, (103), 63 states have call successors, (63), 13 states have call predecessors, (63), 13 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-06 22:55:57,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 228 transitions. [2024-11-06 22:55:57,707 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 228 transitions. Word has length 118 [2024-11-06 22:55:57,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:55:57,707 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 228 transitions. [2024-11-06 22:55:57,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 19 states have internal predecessors, (50), 9 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 9 states have call predecessors, (30), 9 states have call successors, (30) [2024-11-06 22:55:57,708 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 228 transitions. [2024-11-06 22:55:57,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-06 22:55:57,709 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:55:57,709 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 14, 6, 6, 6, 4, 4, 4, 4, 4, 4, 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] [2024-11-06 22:55:57,727 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 22:55:57,909 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 22:55:57,910 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:55:57,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:55:57,910 INFO L85 PathProgramCache]: Analyzing trace with hash -349873392, now seen corresponding path program 3 times [2024-11-06 22:55:57,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:55:57,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279632551] [2024-11-06 22:55:57,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:55:57,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:55:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:55:57,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1330456685] [2024-11-06 22:55:57,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 22:55:57,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:55:57,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:55:57,939 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 22:55:57,941 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 22:55:58,014 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-06 22:55:58,014 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:55:58,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-06 22:55:58,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:55:58,487 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 51 proven. 48 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-11-06 22:55:58,487 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:55:59,378 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 51 proven. 48 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-11-06 22:55:59,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:55:59,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279632551] [2024-11-06 22:55:59,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:55:59,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330456685] [2024-11-06 22:55:59,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330456685] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:55:59,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 22:55:59,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2024-11-06 22:55:59,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408778814] [2024-11-06 22:55:59,379 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 22:55:59,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-06 22:55:59,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:55:59,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-06 22:55:59,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2024-11-06 22:55:59,380 INFO L87 Difference]: Start difference. First operand 166 states and 228 transitions. Second operand has 20 states, 20 states have (on average 2.25) internal successors, (45), 19 states have internal predecessors, (45), 13 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 11 states have call predecessors, (36), 13 states have call successors, (36) [2024-11-06 22:56:02,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-06 22:56:06,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-06 22:56:10,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-06 22:56:11,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:56:11,275 INFO L93 Difference]: Finished difference Result 196 states and 271 transitions. [2024-11-06 22:56:11,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-06 22:56:11,276 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 19 states have internal predecessors, (45), 13 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 11 states have call predecessors, (36), 13 states have call successors, (36) Word has length 120 [2024-11-06 22:56:11,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:56:11,277 INFO L225 Difference]: With dead ends: 196 [2024-11-06 22:56:11,277 INFO L226 Difference]: Without dead ends: 194 [2024-11-06 22:56:11,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2024-11-06 22:56:11,278 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 32 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 49 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2024-11-06 22:56:11,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 363 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 322 Invalid, 2 Unknown, 0 Unchecked, 11.4s Time] [2024-11-06 22:56:11,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-06 22:56:11,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 170. [2024-11-06 22:56:11,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 92 states have (on average 1.1521739130434783) internal successors, (106), 93 states have internal predecessors, (106), 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 22:56:11,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 231 transitions. [2024-11-06 22:56:11,347 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 231 transitions. Word has length 120 [2024-11-06 22:56:11,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:56:11,347 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 231 transitions. [2024-11-06 22:56:11,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 19 states have internal predecessors, (45), 13 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 11 states have call predecessors, (36), 13 states have call successors, (36) [2024-11-06 22:56:11,347 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 231 transitions. [2024-11-06 22:56:11,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-06 22:56:11,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:56:11,348 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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 22:56:11,361 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 22:56:11,550 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 22:56:11,550 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:56:11,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:56:11,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1098112047, now seen corresponding path program 4 times [2024-11-06 22:56:11,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:56:11,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553864910] [2024-11-06 22:56:11,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:11,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:56:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:56:11,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [68947034] [2024-11-06 22:56:11,575 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 22:56:11,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:56:11,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:56:11,577 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 22:56:11,579 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 22:56:11,652 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 22:56:11,652 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:56:11,653 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-06 22:56:11,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:56:12,717 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 71 proven. 36 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2024-11-06 22:56:12,717 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:56:13,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:56:13,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553864910] [2024-11-06 22:56:13,294 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:56:13,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68947034] [2024-11-06 22:56:13,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68947034] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:56:13,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-06 22:56:13,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-11-06 22:56:13,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267457501] [2024-11-06 22:56:13,294 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-06 22:56:13,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-06 22:56:13,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:56:13,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-06 22:56:13,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-06 22:56:13,295 INFO L87 Difference]: Start difference. First operand 170 states and 231 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 7 states have call predecessors, (21), 6 states have call successors, (21) [2024-11-06 22:56:14,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:56:14,553 INFO L93 Difference]: Finished difference Result 204 states and 277 transitions. [2024-11-06 22:56:14,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-06 22:56:14,554 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 7 states have call predecessors, (21), 6 states have call successors, (21) Word has length 125 [2024-11-06 22:56:14,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:56:14,557 INFO L225 Difference]: With dead ends: 204 [2024-11-06 22:56:14,557 INFO L226 Difference]: Without dead ends: 202 [2024-11-06 22:56:14,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 113 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2024-11-06 22:56:14,558 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 25 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-06 22:56:14,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 467 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-06 22:56:14,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-06 22:56:14,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 177. [2024-11-06 22:56:14,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 96 states have (on average 1.1458333333333333) internal successors, (110), 98 states have internal predecessors, (110), 66 states have call successors, (66), 14 states have call predecessors, (66), 14 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-06 22:56:14,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 241 transitions. [2024-11-06 22:56:14,652 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 241 transitions. Word has length 125 [2024-11-06 22:56:14,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:56:14,653 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 241 transitions. [2024-11-06 22:56:14,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 7 states have call predecessors, (21), 6 states have call successors, (21) [2024-11-06 22:56:14,653 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 241 transitions. [2024-11-06 22:56:14,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-06 22:56:14,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:56:14,654 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 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 22:56:14,673 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 22:56:14,854 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 22:56:14,854 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:56:14,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:56:14,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1723073834, now seen corresponding path program 5 times [2024-11-06 22:56:14,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:56:14,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360706674] [2024-11-06 22:56:14,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:56:14,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:56:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:56:14,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [169544136] [2024-11-06 22:56:14,875 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 22:56:14,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:56:14,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:56:14,878 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 22:56:14,879 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 22:56:15,045 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-06 22:56:15,045 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:56:15,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-06 22:56:15,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:56:16,084 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 80 proven. 47 refuted. 0 times theorem prover too weak. 423 trivial. 0 not checked. [2024-11-06 22:56:16,084 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:56:23,822 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 71 proven. 41 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2024-11-06 22:56:23,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:56:23,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360706674] [2024-11-06 22:56:23,822 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:56:23,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169544136] [2024-11-06 22:56:23,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169544136] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:56:23,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 22:56:23,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14] total 29 [2024-11-06 22:56:23,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741167445] [2024-11-06 22:56:23,822 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 22:56:23,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-06 22:56:23,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:56:23,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-06 22:56:23,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=662, Unknown=0, NotChecked=0, Total=812 [2024-11-06 22:56:23,824 INFO L87 Difference]: Start difference. First operand 177 states and 241 transitions. Second operand has 29 states, 27 states have (on average 2.0) internal successors, (54), 25 states have internal predecessors, (54), 13 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (39), 14 states have call predecessors, (39), 11 states have call successors, (39)