./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound10.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/hard-ll_valuebound10.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', '6d5fb336862157190b75f459fa5ac35efb8ca70e207f909b082fde37cf98e7f7'] 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/hard-ll_valuebound10.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 6d5fb336862157190b75f459fa5ac35efb8ca70e207f909b082fde37cf98e7f7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 23:04:06,901 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 23:04:06,977 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 23:04:06,980 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 23:04:06,980 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 23:04:06,996 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 23:04:06,996 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 23:04:06,997 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 23:04:06,997 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 23:04:06,997 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 23:04:06,997 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 23:04:06,997 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 23:04:06,997 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 23:04:06,997 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 23:04:06,997 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 23:04:06,998 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 23:04:06,998 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 23:04:06,998 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 23:04:06,998 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 23:04:06,998 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 23:04:06,998 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 23:04:06,998 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 23:04:06,998 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 23:04:06,998 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 23:04:06,998 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 23:04:06,998 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 23:04:06,999 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 23:04:06,999 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 23:04:06,999 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 23:04:06,999 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 23:04:06,999 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 23:04:06,999 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 23:04:06,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 23:04:06,999 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 23:04:06,999 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 23:04:06,999 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 23:04:06,999 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 23:04:06,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 23:04:07,000 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 23:04:07,000 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 23:04:07,000 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 23:04:07,000 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 23:04:07,000 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 -> 6d5fb336862157190b75f459fa5ac35efb8ca70e207f909b082fde37cf98e7f7 [2024-11-06 23:04:07,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 23:04:07,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 23:04:07,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 23:04:07,246 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 23:04:07,246 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 23:04:07,251 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound10.c [2024-11-06 23:04:08,339 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 23:04:08,578 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 23:04:08,581 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound10.c [2024-11-06 23:04:08,586 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b9c581cdc/f44f0ff6f2d94d5ebd921ea7838b5160/FLAG616dca543 [2024-11-06 23:04:08,600 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b9c581cdc/f44f0ff6f2d94d5ebd921ea7838b5160 [2024-11-06 23:04:08,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 23:04:08,602 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 23:04:08,604 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 23:04:08,604 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 23:04:08,607 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 23:04:08,607 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:04:08" (1/1) ... [2024-11-06 23:04:08,609 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@744e2087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:08, skipping insertion in model container [2024-11-06 23:04:08,609 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:04:08" (1/1) ... [2024-11-06 23:04:08,618 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 23:04:08,719 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/hard-ll_valuebound10.c[538,551] [2024-11-06 23:04:08,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 23:04:08,738 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 23:04:08,747 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/hard-ll_valuebound10.c[538,551] [2024-11-06 23:04:08,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 23:04:08,768 INFO L204 MainTranslator]: Completed translation [2024-11-06 23:04:08,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:08 WrapperNode [2024-11-06 23:04:08,769 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 23:04:08,770 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 23:04:08,771 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 23:04:08,771 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 23:04:08,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:08" (1/1) ... [2024-11-06 23:04:08,781 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:08" (1/1) ... [2024-11-06 23:04:08,793 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2024-11-06 23:04:08,795 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 23:04:08,796 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 23:04:08,796 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 23:04:08,796 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 23:04:08,803 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:08" (1/1) ... [2024-11-06 23:04:08,804 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:08" (1/1) ... [2024-11-06 23:04:08,808 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:08" (1/1) ... [2024-11-06 23:04:08,817 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 23:04:08,817 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:08" (1/1) ... [2024-11-06 23:04:08,817 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:08" (1/1) ... [2024-11-06 23:04:08,819 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:08" (1/1) ... [2024-11-06 23:04:08,821 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:08" (1/1) ... [2024-11-06 23:04:08,822 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:08" (1/1) ... [2024-11-06 23:04:08,823 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:08" (1/1) ... [2024-11-06 23:04:08,824 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 23:04:08,828 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 23:04:08,828 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 23:04:08,828 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 23:04:08,829 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:08" (1/1) ... [2024-11-06 23:04:08,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 23:04:08,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:04:08,850 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 23:04:08,852 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 23:04:08,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 23:04:08,867 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-06 23:04:08,867 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-06 23:04:08,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 23:04:08,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 23:04:08,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 23:04:08,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-06 23:04:08,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-06 23:04:08,906 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 23:04:08,907 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 23:04:08,988 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-06 23:04:08,989 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 23:04:08,994 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 23:04:08,994 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-06 23:04:08,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:04:08 BoogieIcfgContainer [2024-11-06 23:04:08,995 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 23:04:08,996 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 23:04:08,996 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 23:04:09,000 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 23:04:09,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:04:08" (1/3) ... [2024-11-06 23:04:09,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd76c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:04:09, skipping insertion in model container [2024-11-06 23:04:09,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:08" (2/3) ... [2024-11-06 23:04:09,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd76c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:04:09, skipping insertion in model container [2024-11-06 23:04:09,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:04:08" (3/3) ... [2024-11-06 23:04:09,001 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound10.c [2024-11-06 23:04:09,010 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 23:04:09,010 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 23:04:09,039 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 23:04:09,046 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;@3e50b3c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 23:04:09,046 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 23:04:09,048 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-06 23:04:09,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-06 23:04:09,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:04:09,053 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:04:09,053 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:04:09,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:04:09,056 INFO L85 PathProgramCache]: Analyzing trace with hash -487550744, now seen corresponding path program 1 times [2024-11-06 23:04:09,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:04:09,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437723494] [2024-11-06 23:04:09,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:04:09,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:04:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:09,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:04:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:09,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 23:04:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:09,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 23:04:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:09,160 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 23:04:09,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:04:09,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437723494] [2024-11-06 23:04:09,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437723494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:04:09,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:04:09,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 23:04:09,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007677094] [2024-11-06 23:04:09,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:04:09,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-06 23:04:09,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:04:09,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-06 23:04:09,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 23:04:09,183 INFO L87 Difference]: Start difference. First operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-06 23:04:09,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:04:09,195 INFO L93 Difference]: Finished difference Result 63 states and 104 transitions. [2024-11-06 23:04:09,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-06 23:04:09,196 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2024-11-06 23:04:09,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:04:09,200 INFO L225 Difference]: With dead ends: 63 [2024-11-06 23:04:09,200 INFO L226 Difference]: Without dead ends: 29 [2024-11-06 23:04:09,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 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 23:04:09,203 INFO L432 NwaCegarLoop]: 43 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, 43 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 23:04:09,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:04:09,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-06 23:04:09,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-06 23:04:09,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-06 23:04:09,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2024-11-06 23:04:09,223 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 24 [2024-11-06 23:04:09,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:04:09,223 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2024-11-06 23:04:09,223 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-06 23:04:09,223 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2024-11-06 23:04:09,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-06 23:04:09,224 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:04:09,224 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:04:09,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 23:04:09,224 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:04:09,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:04:09,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1636258074, now seen corresponding path program 1 times [2024-11-06 23:04:09,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:04:09,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271459401] [2024-11-06 23:04:09,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:04:09,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:04:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:09,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:04:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:09,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 23:04:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:09,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 23:04:09,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:09,367 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 23:04:09,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:04:09,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271459401] [2024-11-06 23:04:09,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271459401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:04:09,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:04:09,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 23:04:09,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578068655] [2024-11-06 23:04:09,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:04:09,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 23:04:09,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:04:09,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 23:04:09,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 23:04:09,369 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-06 23:04:09,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:04:09,408 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2024-11-06 23:04:09,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 23:04:09,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2024-11-06 23:04:09,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:04:09,409 INFO L225 Difference]: With dead ends: 42 [2024-11-06 23:04:09,409 INFO L226 Difference]: Without dead ends: 40 [2024-11-06 23:04:09,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 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 23:04:09,410 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 9 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:04:09,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 126 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:04:09,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-06 23:04:09,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2024-11-06 23:04:09,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-06 23:04:09,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2024-11-06 23:04:09,416 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 24 [2024-11-06 23:04:09,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:04:09,416 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2024-11-06 23:04:09,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-06 23:04:09,416 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2024-11-06 23:04:09,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-06 23:04:09,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:04:09,417 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:04:09,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 23:04:09,417 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:04:09,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:04:09,417 INFO L85 PathProgramCache]: Analyzing trace with hash 906849917, now seen corresponding path program 1 times [2024-11-06 23:04:09,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:04:09,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667469598] [2024-11-06 23:04:09,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:04:09,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:04:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:09,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:04:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:09,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 23:04:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:09,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 23:04:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:09,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-06 23:04:09,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:09,530 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 23:04:09,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:04:09,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667469598] [2024-11-06 23:04:09,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667469598] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:04:09,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:04:09,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 23:04:09,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409775579] [2024-11-06 23:04:09,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:04:09,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 23:04:09,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:04:09,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 23:04:09,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 23:04:09,532 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 23:04:09,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:04:09,573 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2024-11-06 23:04:09,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 23:04:09,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2024-11-06 23:04:09,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:04:09,574 INFO L225 Difference]: With dead ends: 46 [2024-11-06 23:04:09,574 INFO L226 Difference]: Without dead ends: 44 [2024-11-06 23:04:09,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 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 23:04:09,575 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 9 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:04:09,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 123 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:04:09,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-06 23:04:09,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2024-11-06 23:04:09,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-06 23:04:09,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2024-11-06 23:04:09,581 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 29 [2024-11-06 23:04:09,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:04:09,581 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2024-11-06 23:04:09,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 23:04:09,581 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2024-11-06 23:04:09,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-06 23:04:09,582 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:04:09,582 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:04:09,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 23:04:09,582 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:04:09,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:04:09,582 INFO L85 PathProgramCache]: Analyzing trace with hash 710995206, now seen corresponding path program 1 times [2024-11-06 23:04:09,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:04:09,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118925908] [2024-11-06 23:04:09,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:04:09,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:04:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 23:04:09,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1880364373] [2024-11-06 23:04:09,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:04:09,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:04:09,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:04:09,598 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 23:04:09,604 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 23:04:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:09,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 23:04:09,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:04:09,699 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-06 23:04:09,700 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 23:04:09,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:04:09,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118925908] [2024-11-06 23:04:09,700 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 23:04:09,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880364373] [2024-11-06 23:04:09,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880364373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:04:09,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:04:09,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 23:04:09,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391718724] [2024-11-06 23:04:09,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:04:09,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 23:04:09,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:04:09,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 23:04:09,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 23:04:09,702 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 23:04:09,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:04:09,748 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2024-11-06 23:04:09,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 23:04:09,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2024-11-06 23:04:09,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:04:09,749 INFO L225 Difference]: With dead ends: 63 [2024-11-06 23:04:09,749 INFO L226 Difference]: Without dead ends: 50 [2024-11-06 23:04:09,750 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 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 23:04:09,750 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 5 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:04:09,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 124 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:04:09,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-06 23:04:09,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-06 23:04:09,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 30 states have internal predecessors, (34), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-06 23:04:09,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 63 transitions. [2024-11-06 23:04:09,757 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 63 transitions. Word has length 34 [2024-11-06 23:04:09,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:04:09,757 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 63 transitions. [2024-11-06 23:04:09,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 23:04:09,757 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 63 transitions. [2024-11-06 23:04:09,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-06 23:04:09,758 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:04:09,758 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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 23:04:09,770 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 23:04:09,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:04:09,963 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:04:09,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:04:09,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1829555286, now seen corresponding path program 1 times [2024-11-06 23:04:09,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:04:09,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315581183] [2024-11-06 23:04:09,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:04:09,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:04:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 23:04:09,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1995132615] [2024-11-06 23:04:09,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:04:09,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:04:09,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:04:09,977 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 23:04:09,988 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 23:04:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:10,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-06 23:04:10,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:04:10,096 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 23:04:10,096 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:04:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 23:04:10,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:04:10,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315581183] [2024-11-06 23:04:10,239 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 23:04:10,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995132615] [2024-11-06 23:04:10,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995132615] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:04:10,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 23:04:10,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-11-06 23:04:10,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169741179] [2024-11-06 23:04:10,240 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 23:04:10,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-06 23:04:10,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:04:10,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-06 23:04:10,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-06 23:04:10,241 INFO L87 Difference]: Start difference. First operand 50 states and 63 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-06 23:04:10,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:04:10,320 INFO L93 Difference]: Finished difference Result 65 states and 83 transitions. [2024-11-06 23:04:10,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-06 23:04:10,321 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 41 [2024-11-06 23:04:10,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:04:10,322 INFO L225 Difference]: With dead ends: 65 [2024-11-06 23:04:10,322 INFO L226 Difference]: Without dead ends: 63 [2024-11-06 23:04:10,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-06 23:04:10,323 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 12 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 23:04:10,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 161 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 23:04:10,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-06 23:04:10,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2024-11-06 23:04:10,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 35 states have (on average 1.2) internal successors, (42), 37 states have internal predecessors, (42), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-06 23:04:10,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 77 transitions. [2024-11-06 23:04:10,331 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 77 transitions. Word has length 41 [2024-11-06 23:04:10,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:04:10,331 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 77 transitions. [2024-11-06 23:04:10,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-06 23:04:10,331 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 77 transitions. [2024-11-06 23:04:10,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-06 23:04:10,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:04:10,332 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:04:10,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-06 23:04:10,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:04:10,532 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:04:10,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:04:10,533 INFO L85 PathProgramCache]: Analyzing trace with hash 105343995, now seen corresponding path program 1 times [2024-11-06 23:04:10,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:04:10,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042435839] [2024-11-06 23:04:10,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:04:10,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:04:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 23:04:10,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [532662098] [2024-11-06 23:04:10,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:04:10,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:04:10,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:04:10,548 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 23:04:10,549 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 23:04:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:10,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-06 23:04:10,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:04:10,655 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-06 23:04:10,656 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:04:10,717 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-06 23:04:10,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:04:10,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042435839] [2024-11-06 23:04:10,717 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 23:04:10,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532662098] [2024-11-06 23:04:10,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532662098] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-06 23:04:10,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 23:04:10,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-11-06 23:04:10,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704322324] [2024-11-06 23:04:10,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:04:10,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 23:04:10,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:04:10,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 23:04:10,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-06 23:04:10,718 INFO L87 Difference]: Start difference. First operand 60 states and 77 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-06 23:04:10,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:04:10,784 INFO L93 Difference]: Finished difference Result 70 states and 89 transitions. [2024-11-06 23:04:10,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 23:04:10,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 51 [2024-11-06 23:04:10,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:04:10,785 INFO L225 Difference]: With dead ends: 70 [2024-11-06 23:04:10,785 INFO L226 Difference]: Without dead ends: 68 [2024-11-06 23:04:10,785 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-06 23:04:10,786 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 5 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 23:04:10,786 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 117 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 23:04:10,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-06 23:04:10,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2024-11-06 23:04:10,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 42 states have internal predecessors, (46), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-06 23:04:10,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2024-11-06 23:04:10,798 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 51 [2024-11-06 23:04:10,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:04:10,798 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2024-11-06 23:04:10,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-06 23:04:10,798 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2024-11-06 23:04:10,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-06 23:04:10,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:04:10,799 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 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, 1] [2024-11-06 23:04:10,811 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 23:04:11,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:04:11,004 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:04:11,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:04:11,004 INFO L85 PathProgramCache]: Analyzing trace with hash -144627113, now seen corresponding path program 1 times [2024-11-06 23:04:11,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:04:11,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918531222] [2024-11-06 23:04:11,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:04:11,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:04:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:11,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:04:11,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:11,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 23:04:11,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:11,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 23:04:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:11,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-06 23:04:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:11,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-06 23:04:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:11,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-06 23:04:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:11,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-06 23:04:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:11,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-06 23:04:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:11,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-06 23:04:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:11,195 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-06 23:04:11,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:04:11,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918531222] [2024-11-06 23:04:11,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918531222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:04:11,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:04:11,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 23:04:11,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470827023] [2024-11-06 23:04:11,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:04:11,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 23:04:11,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:04:11,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 23:04:11,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 23:04:11,198 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-06 23:04:11,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:04:11,240 INFO L93 Difference]: Finished difference Result 75 states and 93 transitions. [2024-11-06 23:04:11,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 23:04:11,241 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 57 [2024-11-06 23:04:11,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:04:11,241 INFO L225 Difference]: With dead ends: 75 [2024-11-06 23:04:11,242 INFO L226 Difference]: Without dead ends: 63 [2024-11-06 23:04:11,242 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 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 23:04:11,242 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 3 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:04:11,242 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 134 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:04:11,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-06 23:04:11,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-06 23:04:11,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 37 states have (on average 1.162162162162162) internal successors, (43), 40 states have internal predecessors, (43), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-06 23:04:11,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2024-11-06 23:04:11,250 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 57 [2024-11-06 23:04:11,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:04:11,250 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2024-11-06 23:04:11,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-06 23:04:11,250 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2024-11-06 23:04:11,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-06 23:04:11,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:04:11,251 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 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] [2024-11-06 23:04:11,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-06 23:04:11,251 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:04:11,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:04:11,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1754894755, now seen corresponding path program 1 times [2024-11-06 23:04:11,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:04:11,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064202888] [2024-11-06 23:04:11,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:04:11,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:04:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 23:04:11,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [301522172] [2024-11-06 23:04:11,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:04:11,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:04:11,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:04:11,278 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 23:04:11,280 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 23:04:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:11,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-06 23:04:11,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:04:11,768 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-11-06 23:04:11,768 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:04:12,984 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-06 23:04:12,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:04:12,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064202888] [2024-11-06 23:04:12,985 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 23:04:12,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301522172] [2024-11-06 23:04:12,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301522172] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:04:12,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 23:04:12,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2024-11-06 23:04:12,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687675712] [2024-11-06 23:04:12,985 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 23:04:12,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-06 23:04:12,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:04:12,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-06 23:04:12,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-11-06 23:04:12,987 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 16 states have internal predecessors, (35), 9 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) [2024-11-06 23:04:14,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:04:14,612 INFO L93 Difference]: Finished difference Result 150 states and 207 transitions. [2024-11-06 23:04:14,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-06 23:04:14,612 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 16 states have internal predecessors, (35), 9 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) Word has length 71 [2024-11-06 23:04:14,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:04:14,614 INFO L225 Difference]: With dead ends: 150 [2024-11-06 23:04:14,614 INFO L226 Difference]: Without dead ends: 127 [2024-11-06 23:04:14,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2024-11-06 23:04:14,618 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 67 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-06 23:04:14,619 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 328 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-06 23:04:14,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-06 23:04:14,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 102. [2024-11-06 23:04:14,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 61 states have (on average 1.180327868852459) internal successors, (72), 65 states have internal predecessors, (72), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (28), 25 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-06 23:04:14,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 129 transitions. [2024-11-06 23:04:14,653 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 129 transitions. Word has length 71 [2024-11-06 23:04:14,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:04:14,653 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 129 transitions. [2024-11-06 23:04:14,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 16 states have internal predecessors, (35), 9 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) [2024-11-06 23:04:14,654 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 129 transitions. [2024-11-06 23:04:14,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-06 23:04:14,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:04:14,655 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:04:14,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-06 23:04:14,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-06 23:04:14,859 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:04:14,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:04:14,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1620227847, now seen corresponding path program 1 times [2024-11-06 23:04:14,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:04:14,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828315987] [2024-11-06 23:04:14,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:04:14,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:04:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 23:04:14,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1402873795] [2024-11-06 23:04:14,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:04:14,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:04:14,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:04:14,904 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 23:04:14,905 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 23:04:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:14,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-06 23:04:14,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:04:15,266 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 26 proven. 9 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-06 23:04:15,266 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:04:15,698 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-06 23:04:15,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:04:15,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828315987] [2024-11-06 23:04:15,699 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 23:04:15,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402873795] [2024-11-06 23:04:15,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402873795] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:04:15,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 23:04:15,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2024-11-06 23:04:15,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235491295] [2024-11-06 23:04:15,699 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 23:04:15,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-06 23:04:15,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:04:15,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-06 23:04:15,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2024-11-06 23:04:15,701 INFO L87 Difference]: Start difference. First operand 102 states and 129 transitions. Second operand has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 11 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) [2024-11-06 23:04:16,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:04:16,302 INFO L93 Difference]: Finished difference Result 142 states and 177 transitions. [2024-11-06 23:04:16,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-06 23:04:16,303 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 11 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) Word has length 82 [2024-11-06 23:04:16,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:04:16,304 INFO L225 Difference]: With dead ends: 142 [2024-11-06 23:04:16,304 INFO L226 Difference]: Without dead ends: 108 [2024-11-06 23:04:16,305 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2024-11-06 23:04:16,305 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 27 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-06 23:04:16,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 439 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-06 23:04:16,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-06 23:04:16,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 94. [2024-11-06 23:04:16,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 59 states have internal predecessors, (66), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-06 23:04:16,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 115 transitions. [2024-11-06 23:04:16,339 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 115 transitions. Word has length 82 [2024-11-06 23:04:16,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:04:16,339 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 115 transitions. [2024-11-06 23:04:16,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 11 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) [2024-11-06 23:04:16,339 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 115 transitions. [2024-11-06 23:04:16,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-06 23:04:16,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:04:16,340 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:04:16,355 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 23:04:16,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:04:16,547 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:04:16,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:04:16,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1888027627, now seen corresponding path program 2 times [2024-11-06 23:04:16,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:04:16,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127374000] [2024-11-06 23:04:16,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:04:16,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:04:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:16,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:04:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:16,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 23:04:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:16,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 23:04:16,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:16,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-06 23:04:16,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:16,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-06 23:04:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:16,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-06 23:04:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:16,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-06 23:04:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:16,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-06 23:04:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:16,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-06 23:04:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:16,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-06 23:04:16,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:16,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-06 23:04:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:16,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-06 23:04:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:16,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-06 23:04:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:16,697 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-06 23:04:16,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:04:16,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127374000] [2024-11-06 23:04:16,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127374000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:04:16,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462005821] [2024-11-06 23:04:16,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 23:04:16,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:04:16,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:04:16,699 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 23:04:16,700 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 23:04:16,739 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 23:04:16,740 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:04:16,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 23:04:16,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:04:16,773 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-06 23:04:16,773 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:04:16,850 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-06 23:04:16,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462005821] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:04:16,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:04:16,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-11-06 23:04:16,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679246618] [2024-11-06 23:04:16,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:04:16,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 23:04:16,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:04:16,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 23:04:16,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-06 23:04:16,853 INFO L87 Difference]: Start difference. First operand 94 states and 115 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-06 23:04:16,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:04:16,891 INFO L93 Difference]: Finished difference Result 121 states and 152 transitions. [2024-11-06 23:04:16,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 23:04:16,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 84 [2024-11-06 23:04:16,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:04:16,893 INFO L225 Difference]: With dead ends: 121 [2024-11-06 23:04:16,893 INFO L226 Difference]: Without dead ends: 99 [2024-11-06 23:04:16,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-06 23:04:16,894 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 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 23:04:16,894 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:04:16,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-06 23:04:16,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-06 23:04:16,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 60 states have (on average 1.15) internal successors, (69), 62 states have internal predecessors, (69), 27 states have call successors, (27), 11 states have call predecessors, (27), 11 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-06 23:04:16,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 122 transitions. [2024-11-06 23:04:16,912 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 122 transitions. Word has length 84 [2024-11-06 23:04:16,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:04:16,913 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 122 transitions. [2024-11-06 23:04:16,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-06 23:04:16,913 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 122 transitions. [2024-11-06 23:04:16,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-06 23:04:16,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:04:16,915 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:04:16,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-06 23:04:17,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-06 23:04:17,116 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:04:17,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:04:17,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1729716470, now seen corresponding path program 1 times [2024-11-06 23:04:17,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:04:17,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748544156] [2024-11-06 23:04:17,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:04:17,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:04:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:17,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:04:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:17,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 23:04:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:17,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 23:04:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:17,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-06 23:04:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:17,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-06 23:04:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:17,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-06 23:04:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:17,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-06 23:04:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:17,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-06 23:04:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:17,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-06 23:04:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:17,377 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-06 23:04:17,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:17,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-06 23:04:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:17,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-06 23:04:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:17,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-06 23:04:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:17,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-06 23:04:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:17,397 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-06 23:04:17,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:04:17,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748544156] [2024-11-06 23:04:17,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748544156] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:04:17,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105732677] [2024-11-06 23:04:17,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:04:17,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:04:17,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:04:17,400 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 23:04:17,402 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 23:04:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:17,448 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-06 23:04:17,450 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:04:17,682 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 28 proven. 9 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-11-06 23:04:17,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:04:17,941 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-06 23:04:17,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105732677] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:04:17,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:04:17,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 8] total 18 [2024-11-06 23:04:17,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457449237] [2024-11-06 23:04:17,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:04:17,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-06 23:04:17,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:04:17,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-06 23:04:17,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-11-06 23:04:17,943 INFO L87 Difference]: Start difference. First operand 99 states and 122 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 15 states have internal predecessors, (43), 10 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) [2024-11-06 23:04:18,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:04:18,202 INFO L93 Difference]: Finished difference Result 114 states and 142 transitions. [2024-11-06 23:04:18,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-06 23:04:18,203 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 15 states have internal predecessors, (43), 10 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) Word has length 87 [2024-11-06 23:04:18,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:04:18,204 INFO L225 Difference]: With dead ends: 114 [2024-11-06 23:04:18,204 INFO L226 Difference]: Without dead ends: 97 [2024-11-06 23:04:18,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2024-11-06 23:04:18,205 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 22 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 23:04:18,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 375 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 23:04:18,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-06 23:04:18,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 90. [2024-11-06 23:04:18,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 57 states have internal predecessors, (63), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-06 23:04:18,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2024-11-06 23:04:18,216 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 87 [2024-11-06 23:04:18,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:04:18,217 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2024-11-06 23:04:18,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 15 states have internal predecessors, (43), 10 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) [2024-11-06 23:04:18,217 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2024-11-06 23:04:18,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-06 23:04:18,218 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:04:18,218 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:04:18,230 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 23:04:18,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:04:18,422 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:04:18,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:04:18,422 INFO L85 PathProgramCache]: Analyzing trace with hash -219918921, now seen corresponding path program 1 times [2024-11-06 23:04:18,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:04:18,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394898968] [2024-11-06 23:04:18,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:04:18,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:04:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:18,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:04:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:18,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 23:04:18,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:18,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 23:04:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:18,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-06 23:04:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:18,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-06 23:04:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:18,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-06 23:04:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:18,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-06 23:04:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:18,476 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-06 23:04:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:18,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-06 23:04:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:18,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-06 23:04:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:18,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-06 23:04:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:18,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-06 23:04:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:18,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-06 23:04:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:18,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-06 23:04:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:18,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-06 23:04:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:18,489 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-06 23:04:18,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:04:18,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394898968] [2024-11-06 23:04:18,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394898968] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:04:18,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213749433] [2024-11-06 23:04:18,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:04:18,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:04:18,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:04:18,492 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 23:04:18,494 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 23:04:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:18,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 23:04:18,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:04:18,580 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2024-11-06 23:04:18,581 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 23:04:18,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213749433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:04:18,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 23:04:18,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2024-11-06 23:04:18,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337151522] [2024-11-06 23:04:18,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:04:18,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 23:04:18,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:04:18,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 23:04:18,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-06 23:04:18,582 INFO L87 Difference]: Start difference. First operand 90 states and 108 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-06 23:04:18,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:04:18,642 INFO L93 Difference]: Finished difference Result 97 states and 114 transitions. [2024-11-06 23:04:18,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 23:04:18,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 91 [2024-11-06 23:04:18,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:04:18,643 INFO L225 Difference]: With dead ends: 97 [2024-11-06 23:04:18,643 INFO L226 Difference]: Without dead ends: 85 [2024-11-06 23:04:18,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-06 23:04:18,644 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 7 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:04:18,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 116 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:04:18,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-06 23:04:18,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-11-06 23:04:18,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 53 states have internal predecessors, (58), 22 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-06 23:04:18,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 101 transitions. [2024-11-06 23:04:18,673 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 101 transitions. Word has length 91 [2024-11-06 23:04:18,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:04:18,673 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 101 transitions. [2024-11-06 23:04:18,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-06 23:04:18,674 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 101 transitions. [2024-11-06 23:04:18,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-06 23:04:18,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:04:18,675 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:04:18,691 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 23:04:18,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:04:18,876 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:04:18,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:04:18,876 INFO L85 PathProgramCache]: Analyzing trace with hash -2103086134, now seen corresponding path program 3 times [2024-11-06 23:04:18,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:04:18,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356032305] [2024-11-06 23:04:18,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:04:18,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:04:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 23:04:18,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1719597176] [2024-11-06 23:04:18,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 23:04:18,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:04:18,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:04:18,903 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 23:04:18,904 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 23:04:18,952 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-06 23:04:18,953 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:04:18,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-06 23:04:18,956 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:04:19,534 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 29 proven. 27 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-11-06 23:04:19,534 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:04:29,911 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 26 proven. 24 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-06 23:04:29,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:04:29,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356032305] [2024-11-06 23:04:29,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 23:04:29,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719597176] [2024-11-06 23:04:29,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719597176] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:04:29,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 23:04:29,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 22 [2024-11-06 23:04:29,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875399200] [2024-11-06 23:04:29,912 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 23:04:29,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-06 23:04:29,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:04:29,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-06 23:04:29,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2024-11-06 23:04:29,913 INFO L87 Difference]: Start difference. First operand 85 states and 101 transitions. Second operand has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 19 states have internal predecessors, (46), 12 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) [2024-11-06 23:04:35,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:04:35,009 INFO L93 Difference]: Finished difference Result 165 states and 218 transitions. [2024-11-06 23:04:35,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-06 23:04:35,010 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 19 states have internal predecessors, (46), 12 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) Word has length 101 [2024-11-06 23:04:35,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:04:35,011 INFO L225 Difference]: With dead ends: 165 [2024-11-06 23:04:35,011 INFO L226 Difference]: Without dead ends: 143 [2024-11-06 23:04:35,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2024-11-06 23:04:35,012 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 91 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-06 23:04:35,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 475 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-06 23:04:35,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-06 23:04:35,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 128. [2024-11-06 23:04:35,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 77 states have (on average 1.1428571428571428) internal successors, (88), 80 states have internal predecessors, (88), 37 states have call successors, (37), 13 states have call predecessors, (37), 13 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-06 23:04:35,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 161 transitions. [2024-11-06 23:04:35,034 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 161 transitions. Word has length 101 [2024-11-06 23:04:35,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:04:35,034 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 161 transitions. [2024-11-06 23:04:35,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 19 states have internal predecessors, (46), 12 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) [2024-11-06 23:04:35,034 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 161 transitions. [2024-11-06 23:04:35,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-06 23:04:35,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:04:35,035 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:04:35,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-06 23:04:35,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:04:35,240 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:04:35,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:04:35,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1168936300, now seen corresponding path program 2 times [2024-11-06 23:04:35,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:04:35,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538493297] [2024-11-06 23:04:35,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:04:35,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:04:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 23:04:35,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [197931178] [2024-11-06 23:04:35,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 23:04:35,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:04:35,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:04:35,268 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 23:04:35,269 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 23:04:35,327 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 23:04:35,327 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:04:35,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-06 23:04:35,329 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:04:35,462 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 124 proven. 22 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2024-11-06 23:04:35,462 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:04:35,600 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-11-06 23:04:35,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:04:35,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538493297] [2024-11-06 23:04:35,600 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 23:04:35,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197931178] [2024-11-06 23:04:35,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197931178] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:04:35,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 23:04:35,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 14 [2024-11-06 23:04:35,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087188408] [2024-11-06 23:04:35,601 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 23:04:35,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-06 23:04:35,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:04:35,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-06 23:04:35,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-06 23:04:35,601 INFO L87 Difference]: Start difference. First operand 128 states and 161 transitions. Second operand has 14 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-06 23:04:36,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:04:36,072 INFO L93 Difference]: Finished difference Result 144 states and 175 transitions. [2024-11-06 23:04:36,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-06 23:04:36,072 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) Word has length 112 [2024-11-06 23:04:36,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:04:36,075 INFO L225 Difference]: With dead ends: 144 [2024-11-06 23:04:36,075 INFO L226 Difference]: Without dead ends: 142 [2024-11-06 23:04:36,075 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2024-11-06 23:04:36,076 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 27 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 23:04:36,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 167 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 23:04:36,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-06 23:04:36,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2024-11-06 23:04:36,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 87 states have (on average 1.1264367816091954) internal successors, (98), 91 states have internal predecessors, (98), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (37), 34 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-06 23:04:36,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 173 transitions. [2024-11-06 23:04:36,105 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 173 transitions. Word has length 112 [2024-11-06 23:04:36,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:04:36,105 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 173 transitions. [2024-11-06 23:04:36,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-06 23:04:36,105 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 173 transitions. [2024-11-06 23:04:36,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-06 23:04:36,107 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:04:36,107 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:04:36,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-06 23:04:36,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-06 23:04:36,307 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:04:36,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:04:36,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1560875064, now seen corresponding path program 4 times [2024-11-06 23:04:36,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:04:36,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721394155] [2024-11-06 23:04:36,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:04:36,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:04:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:36,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:04:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:36,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 23:04:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:36,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 23:04:36,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:36,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-06 23:04:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:36,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-06 23:04:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:36,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-06 23:04:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:36,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-06 23:04:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:36,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-06 23:04:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:36,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-06 23:04:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:36,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-06 23:04:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:36,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-06 23:04:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:36,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-06 23:04:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:36,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-06 23:04:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:36,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-06 23:04:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:36,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-06 23:04:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:36,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-06 23:04:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:36,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-06 23:04:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:36,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-11-06 23:04:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:36,551 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 38 proven. 28 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2024-11-06 23:04:36,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:04:36,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721394155] [2024-11-06 23:04:36,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721394155] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:04:36,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878004306] [2024-11-06 23:04:36,552 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 23:04:36,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:04:36,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:04:36,557 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 23:04:36,561 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 23:04:36,619 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 23:04:36,619 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:04:36,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-06 23:04:36,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:04:36,650 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 38 proven. 28 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2024-11-06 23:04:36,650 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:04:36,787 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 43 proven. 23 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2024-11-06 23:04:36,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878004306] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:04:36,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:04:36,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-06 23:04:36,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686849342] [2024-11-06 23:04:36,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:04:36,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 23:04:36,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:04:36,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 23:04:36,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-06 23:04:36,788 INFO L87 Difference]: Start difference. First operand 142 states and 173 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 7 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) [2024-11-06 23:04:36,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:04:36,862 INFO L93 Difference]: Finished difference Result 174 states and 215 transitions. [2024-11-06 23:04:36,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 23:04:36,863 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 7 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) Word has length 114 [2024-11-06 23:04:36,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:04:36,864 INFO L225 Difference]: With dead ends: 174 [2024-11-06 23:04:36,864 INFO L226 Difference]: Without dead ends: 146 [2024-11-06 23:04:36,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 264 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 23:04:36,864 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 2 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:04:36,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 145 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:04:36,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-06 23:04:36,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2024-11-06 23:04:36,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 88 states have (on average 1.125) internal successors, (99), 93 states have internal predecessors, (99), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (38), 34 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-06 23:04:36,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 176 transitions. [2024-11-06 23:04:36,902 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 176 transitions. Word has length 114 [2024-11-06 23:04:36,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:04:36,902 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 176 transitions. [2024-11-06 23:04:36,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 7 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) [2024-11-06 23:04:36,903 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 176 transitions. [2024-11-06 23:04:36,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-06 23:04:36,904 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:04:36,904 INFO L215 NwaCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:04:36,916 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 23:04:37,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-06 23:04:37,105 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:04:37,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:04:37,105 INFO L85 PathProgramCache]: Analyzing trace with hash -808506761, now seen corresponding path program 2 times [2024-11-06 23:04:37,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:04:37,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825893198] [2024-11-06 23:04:37,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:04:37,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:04:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:37,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:04:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:37,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 23:04:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:37,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 23:04:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:37,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-06 23:04:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:37,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-06 23:04:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:37,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-06 23:04:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:37,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-06 23:04:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:37,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-06 23:04:37,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:37,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-06 23:04:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:37,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-06 23:04:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:37,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-06 23:04:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:37,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-06 23:04:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:37,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-06 23:04:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:37,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-06 23:04:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:37,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-06 23:04:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:37,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-06 23:04:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:37,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-06 23:04:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:37,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-11-06 23:04:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:37,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-11-06 23:04:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:04:37,376 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2024-11-06 23:04:37,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:04:37,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825893198] [2024-11-06 23:04:37,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825893198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:04:37,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499400031] [2024-11-06 23:04:37,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 23:04:37,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:04:37,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:04:37,380 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 23:04:37,385 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 23:04:37,433 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 23:04:37,434 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:04:37,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-06 23:04:37,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:04:37,869 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 52 proven. 53 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2024-11-06 23:04:37,869 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:04:38,635 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 52 proven. 53 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2024-11-06 23:04:38,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499400031] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:04:38,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:04:38,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 14] total 30 [2024-11-06 23:04:38,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351631296] [2024-11-06 23:04:38,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:04:38,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-06 23:04:38,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:04:38,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-06 23:04:38,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2024-11-06 23:04:38,637 INFO L87 Difference]: Start difference. First operand 144 states and 176 transitions. Second operand has 30 states, 30 states have (on average 2.066666666666667) internal successors, (62), 27 states have internal predecessors, (62), 19 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (48), 19 states have call predecessors, (48), 19 states have call successors, (48) [2024-11-06 23:04:39,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:04:39,217 INFO L93 Difference]: Finished difference Result 161 states and 199 transitions. [2024-11-06 23:04:39,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-06 23:04:39,217 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.066666666666667) internal successors, (62), 27 states have internal predecessors, (62), 19 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (48), 19 states have call predecessors, (48), 19 states have call successors, (48) Word has length 117 [2024-11-06 23:04:39,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:04:39,219 INFO L225 Difference]: With dead ends: 161 [2024-11-06 23:04:39,219 INFO L226 Difference]: Without dead ends: 133 [2024-11-06 23:04:39,219 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=214, Invalid=1192, Unknown=0, NotChecked=0, Total=1406 [2024-11-06 23:04:39,219 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 27 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 23:04:39,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 506 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 23:04:39,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-06 23:04:39,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 128. [2024-11-06 23:04:39,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 79 states have (on average 1.1139240506329113) internal successors, (88), 83 states have internal predecessors, (88), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-06 23:04:39,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 151 transitions. [2024-11-06 23:04:39,245 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 151 transitions. Word has length 117 [2024-11-06 23:04:39,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:04:39,246 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 151 transitions. [2024-11-06 23:04:39,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.066666666666667) internal successors, (62), 27 states have internal predecessors, (62), 19 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (48), 19 states have call predecessors, (48), 19 states have call successors, (48) [2024-11-06 23:04:39,246 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 151 transitions. [2024-11-06 23:04:39,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-06 23:04:39,247 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:04:39,247 INFO L215 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:04:39,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-06 23:04:39,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:04:39,448 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:04:39,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:04:39,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1330691261, now seen corresponding path program 5 times [2024-11-06 23:04:39,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:04:39,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108005140] [2024-11-06 23:04:39,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:04:39,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:04:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 23:04:39,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [462004209] [2024-11-06 23:04:39,490 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 23:04:39,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:04:39,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:04:39,495 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 23:04:39,517 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 23:04:39,676 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-06 23:04:39,676 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:04:39,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-06 23:04:39,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:04:40,220 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 44 proven. 94 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2024-11-06 23:04:40,221 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:05:44,372 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 381 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)