./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound50.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/cohendiv-ll_valuebound50.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', 'd97e16340b134520fbcd52e88b56205e8eec0d97e940a97449195072afa1eb85'] 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/cohendiv-ll_valuebound50.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 d97e16340b134520fbcd52e88b56205e8eec0d97e940a97449195072afa1eb85 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 22:49:57,297 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 22:49:57,367 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 22:49:57,370 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 22:49:57,371 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 22:49:57,389 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 22:49:57,391 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 22:49:57,391 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 22:49:57,391 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 22:49:57,391 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 22:49:57,392 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 22:49:57,392 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 22:49:57,392 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 22:49:57,392 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 22:49:57,392 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 22:49:57,392 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 22:49:57,392 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 22:49:57,392 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 22:49:57,392 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 22:49:57,393 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 22:49:57,393 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 22:49:57,393 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 22:49:57,393 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 22:49:57,393 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 22:49:57,393 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 22:49:57,393 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 22:49:57,393 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 22:49:57,393 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 22:49:57,393 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 22:49:57,393 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 22:49:57,393 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 22:49:57,393 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 22:49:57,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 22:49:57,394 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 22:49:57,394 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 22:49:57,394 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 22:49:57,394 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 22:49:57,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 22:49:57,394 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 22:49:57,394 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 22:49:57,394 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 22:49:57,394 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 22:49:57,394 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 -> d97e16340b134520fbcd52e88b56205e8eec0d97e940a97449195072afa1eb85 [2024-11-06 22:49:57,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 22:49:57,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 22:49:57,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 22:49:57,611 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 22:49:57,611 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 22:49:57,612 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound50.c [2024-11-06 22:49:58,700 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 22:49:58,888 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 22:49:58,888 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound50.c [2024-11-06 22:49:58,893 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4a7da8240/a7874f2934b9467cbac6ca8a5ecb9256/FLAG3c080f06b [2024-11-06 22:49:59,265 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4a7da8240/a7874f2934b9467cbac6ca8a5ecb9256 [2024-11-06 22:49:59,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 22:49:59,269 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 22:49:59,270 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 22:49:59,270 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 22:49:59,273 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 22:49:59,273 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:49:59" (1/1) ... [2024-11-06 22:49:59,275 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7817d2a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:59, skipping insertion in model container [2024-11-06 22:49:59,275 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:49:59" (1/1) ... [2024-11-06 22:49:59,284 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 22:49:59,376 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/cohendiv-ll_valuebound50.c[576,589] [2024-11-06 22:49:59,391 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 22:49:59,397 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 22:49:59,405 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/cohendiv-ll_valuebound50.c[576,589] [2024-11-06 22:49:59,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 22:49:59,424 INFO L204 MainTranslator]: Completed translation [2024-11-06 22:49:59,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:59 WrapperNode [2024-11-06 22:49:59,425 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 22:49:59,426 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 22:49:59,426 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 22:49:59,426 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 22:49:59,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:59" (1/1) ... [2024-11-06 22:49:59,435 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:59" (1/1) ... [2024-11-06 22:49:59,445 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 57 [2024-11-06 22:49:59,446 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 22:49:59,446 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 22:49:59,446 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 22:49:59,447 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 22:49:59,452 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:59" (1/1) ... [2024-11-06 22:49:59,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:59" (1/1) ... [2024-11-06 22:49:59,457 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:59" (1/1) ... [2024-11-06 22:49:59,463 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-06 22:49:59,465 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:59" (1/1) ... [2024-11-06 22:49:59,465 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:59" (1/1) ... [2024-11-06 22:49:59,467 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:59" (1/1) ... [2024-11-06 22:49:59,473 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:59" (1/1) ... [2024-11-06 22:49:59,476 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:59" (1/1) ... [2024-11-06 22:49:59,476 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:59" (1/1) ... [2024-11-06 22:49:59,477 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 22:49:59,478 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 22:49:59,479 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 22:49:59,479 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 22:49:59,480 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:59" (1/1) ... [2024-11-06 22:49:59,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 22:49:59,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:49:59,501 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-06 22:49:59,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-06 22:49:59,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 22:49:59,521 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-06 22:49:59,521 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-06 22:49:59,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 22:49:59,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 22:49:59,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 22:49:59,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-06 22:49:59,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-06 22:49:59,564 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 22:49:59,565 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 22:49:59,672 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-11-06 22:49:59,672 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 22:49:59,679 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 22:49:59,680 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-06 22:49:59,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:49:59 BoogieIcfgContainer [2024-11-06 22:49:59,680 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 22:49:59,682 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 22:49:59,682 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 22:49:59,685 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 22:49:59,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:49:59" (1/3) ... [2024-11-06 22:49:59,686 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d75eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:49:59, skipping insertion in model container [2024-11-06 22:49:59,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:59" (2/3) ... [2024-11-06 22:49:59,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d75eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:49:59, skipping insertion in model container [2024-11-06 22:49:59,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:49:59" (3/3) ... [2024-11-06 22:49:59,688 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound50.c [2024-11-06 22:49:59,699 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 22:49:59,700 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 22:49:59,730 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 22:49:59,738 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;@117b63b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 22:49:59,738 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 22:49:59,741 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 20 states have (on average 1.45) internal successors, (29), 21 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 22:49:59,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-06 22:49:59,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:49:59,746 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 22:49:59,746 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:49:59,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:49:59,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1389076267, now seen corresponding path program 1 times [2024-11-06 22:49:59,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:49:59,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415415088] [2024-11-06 22:49:59,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:49:59,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:49:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:59,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:49:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:59,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:49:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:59,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:49:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:49:59,869 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 22:49:59,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:49:59,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415415088] [2024-11-06 22:49:59,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415415088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:49:59,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:49:59,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 22:49:59,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677521880] [2024-11-06 22:49:59,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:49:59,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-06 22:49:59,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:49:59,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-06 22:49:59,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 22:49:59,891 INFO L87 Difference]: Start difference. First operand has 34 states, 20 states have (on average 1.45) internal successors, (29), 21 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 22:49:59,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:49:59,905 INFO L93 Difference]: Finished difference Result 65 states and 104 transitions. [2024-11-06 22:49:59,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-06 22:49:59,906 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 22:49:59,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:49:59,913 INFO L225 Difference]: With dead ends: 65 [2024-11-06 22:49:59,913 INFO L226 Difference]: Without dead ends: 30 [2024-11-06 22:49:59,915 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 22:49:59,916 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 22:49:59,917 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 22:49:59,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-06 22:49:59,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-06 22:49:59,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 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 22:49:59,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2024-11-06 22:49:59,944 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 24 [2024-11-06 22:49:59,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:49:59,945 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2024-11-06 22:49:59,945 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 22:49:59,945 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2024-11-06 22:49:59,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-06 22:49:59,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:49:59,947 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 22:49:59,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 22:49:59,947 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:49:59,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:49:59,949 INFO L85 PathProgramCache]: Analyzing trace with hash 240368937, now seen corresponding path program 1 times [2024-11-06 22:49:59,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:49:59,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824250725] [2024-11-06 22:49:59,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:49:59,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:49:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:49:59,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [5380164] [2024-11-06 22:49:59,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:49:59,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:49:59,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:49:59,976 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:49:59,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-06 22:50:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:00,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 22:50:00,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:50:00,116 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 22:50:00,116 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 22:50:00,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:50:00,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824250725] [2024-11-06 22:50:00,117 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:50:00,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5380164] [2024-11-06 22:50:00,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5380164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:50:00,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:50:00,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:50:00,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358618417] [2024-11-06 22:50:00,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:50:00,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:50:00,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:50:00,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:50:00,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:50:00,119 INFO L87 Difference]: Start difference. First operand 30 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 22:50:00,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:50:00,170 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2024-11-06 22:50:00,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:50:00,171 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 22:50:00,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:50:00,172 INFO L225 Difference]: With dead ends: 41 [2024-11-06 22:50:00,172 INFO L226 Difference]: Without dead ends: 39 [2024-11-06 22:50:00,172 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 22:50:00,172 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 4 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:50:00,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 131 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:50:00,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-06 22:50:00,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2024-11-06 22:50:00,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-06 22:50:00,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2024-11-06 22:50:00,182 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 24 [2024-11-06 22:50:00,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:50:00,183 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2024-11-06 22:50:00,183 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 22:50:00,183 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2024-11-06 22:50:00,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-06 22:50:00,183 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:50:00,183 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 22:50:00,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-06 22:50:00,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:50:00,385 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:50:00,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:50:00,385 INFO L85 PathProgramCache]: Analyzing trace with hash -854318377, now seen corresponding path program 1 times [2024-11-06 22:50:00,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:50:00,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732768193] [2024-11-06 22:50:00,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:50:00,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:50:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:50:00,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [839558456] [2024-11-06 22:50:00,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:50:00,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:50:00,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:50:00,405 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:50:00,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-06 22:50:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:00,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 22:50:00,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:50:00,512 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 22:50:00,512 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 22:50:00,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:50:00,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732768193] [2024-11-06 22:50:00,512 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:50:00,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839558456] [2024-11-06 22:50:00,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839558456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:50:00,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:50:00,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:50:00,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022307695] [2024-11-06 22:50:00,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:50:00,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:50:00,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:50:00,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:50:00,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:50:00,514 INFO L87 Difference]: Start difference. First operand 36 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, (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 22:50:00,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:50:00,576 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2024-11-06 22:50:00,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:50:00,576 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 22:50:00,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:50:00,578 INFO L225 Difference]: With dead ends: 53 [2024-11-06 22:50:00,579 INFO L226 Difference]: Without dead ends: 50 [2024-11-06 22:50:00,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-06 22:50:00,580 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 9 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:50:00,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 120 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:50:00,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-06 22:50:00,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2024-11-06 22:50:00,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 29 states have internal predecessors, (32), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-06 22:50:00,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2024-11-06 22:50:00,587 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 29 [2024-11-06 22:50:00,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:50:00,587 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2024-11-06 22:50:00,587 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 22:50:00,587 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2024-11-06 22:50:00,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-06 22:50:00,588 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:50:00,588 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, 1, 1] [2024-11-06 22:50:00,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-06 22:50:00,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:50:00,793 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:50:00,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:50:00,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1997084946, now seen corresponding path program 1 times [2024-11-06 22:50:00,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:50:00,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213742178] [2024-11-06 22:50:00,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:50:00,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:50:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:50:00,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [375006425] [2024-11-06 22:50:00,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:50:00,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:50:00,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:50:00,822 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:50:00,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-06 22:50:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:00,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 22:50:00,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:50:00,900 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 22:50:00,900 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 22:50:00,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:50:00,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213742178] [2024-11-06 22:50:00,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:50:00,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375006425] [2024-11-06 22:50:00,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375006425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:50:00,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:50:00,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:50:00,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352414662] [2024-11-06 22:50:00,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:50:00,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:50:00,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:50:00,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:50:00,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:50:00,902 INFO L87 Difference]: Start difference. First operand 49 states and 63 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-06 22:50:00,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:50:00,964 INFO L93 Difference]: Finished difference Result 75 states and 101 transitions. [2024-11-06 22:50:00,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:50:00,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 36 [2024-11-06 22:50:00,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:50:00,965 INFO L225 Difference]: With dead ends: 75 [2024-11-06 22:50:00,965 INFO L226 Difference]: Without dead ends: 73 [2024-11-06 22:50:00,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-06 22:50:00,966 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:50:00,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 133 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:50:00,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-06 22:50:00,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 66. [2024-11-06 22:50:00,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 37 states have (on average 1.162162162162162) internal successors, (43), 39 states have internal predecessors, (43), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-06 22:50:00,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 88 transitions. [2024-11-06 22:50:00,974 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 88 transitions. Word has length 36 [2024-11-06 22:50:00,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:50:00,974 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 88 transitions. [2024-11-06 22:50:00,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-06 22:50:00,975 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 88 transitions. [2024-11-06 22:50:00,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-06 22:50:00,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:50:00,979 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 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] [2024-11-06 22:50:00,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-06 22:50:01,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:50:01,180 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:50:01,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:50:01,180 INFO L85 PathProgramCache]: Analyzing trace with hash -2056573358, now seen corresponding path program 1 times [2024-11-06 22:50:01,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:50:01,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072865760] [2024-11-06 22:50:01,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:50:01,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:50:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:01,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:50:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:01,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:50:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:01,436 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:50:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:01,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-06 22:50:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:01,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-06 22:50:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:01,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-06 22:50:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:01,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-06 22:50:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:01,473 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-06 22:50:01,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:50:01,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072865760] [2024-11-06 22:50:01,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072865760] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:50:01,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707049165] [2024-11-06 22:50:01,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:50:01,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:50:01,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:50:01,482 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:50:01,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-06 22:50:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:01,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-06 22:50:01,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:50:01,588 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-06 22:50:01,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:50:01,693 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-06 22:50:01,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707049165] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:50:01,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:50:01,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 13 [2024-11-06 22:50:01,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232875699] [2024-11-06 22:50:01,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:50:01,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-06 22:50:01,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:50:01,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-06 22:50:01,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-06 22:50:01,695 INFO L87 Difference]: Start difference. First operand 66 states and 88 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 11 states have internal predecessors, (29), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-06 22:50:01,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:50:01,784 INFO L93 Difference]: Finished difference Result 74 states and 95 transitions. [2024-11-06 22:50:01,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-06 22:50:01,784 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 11 states have internal predecessors, (29), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 46 [2024-11-06 22:50:01,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:50:01,786 INFO L225 Difference]: With dead ends: 74 [2024-11-06 22:50:01,786 INFO L226 Difference]: Without dead ends: 72 [2024-11-06 22:50:01,786 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 98 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-11-06 22:50:01,787 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 24 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:50:01,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 171 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:50:01,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-06 22:50:01,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2024-11-06 22:50:01,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 40 states have (on average 1.15) internal successors, (46), 42 states have internal predecessors, (46), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-06 22:50:01,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 91 transitions. [2024-11-06 22:50:01,798 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 91 transitions. Word has length 46 [2024-11-06 22:50:01,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:50:01,798 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 91 transitions. [2024-11-06 22:50:01,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 11 states have internal predecessors, (29), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-06 22:50:01,799 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 91 transitions. [2024-11-06 22:50:01,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-06 22:50:01,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:50:01,799 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 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] [2024-11-06 22:50:01,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-06 22:50:02,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:50:02,004 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:50:02,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:50:02,004 INFO L85 PathProgramCache]: Analyzing trace with hash -2085516536, now seen corresponding path program 1 times [2024-11-06 22:50:02,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:50:02,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29760134] [2024-11-06 22:50:02,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:50:02,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:50:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:02,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:50:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:02,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:50:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:02,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:50:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:02,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-06 22:50:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:02,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-06 22:50:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:02,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-06 22:50:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:02,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-06 22:50:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:02,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-06 22:50:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:02,189 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-06 22:50:02,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:50:02,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29760134] [2024-11-06 22:50:02,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29760134] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:50:02,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334879115] [2024-11-06 22:50:02,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:50:02,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:50:02,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:50:02,192 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:50:02,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-06 22:50:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:02,231 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 22:50:02,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:50:02,290 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-06 22:50:02,290 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 22:50:02,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334879115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:50:02,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 22:50:02,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-06 22:50:02,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144350027] [2024-11-06 22:50:02,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:50:02,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-06 22:50:02,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:50:02,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-06 22:50:02,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-06 22:50:02,292 INFO L87 Difference]: Start difference. First operand 70 states and 91 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-06 22:50:02,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:50:02,355 INFO L93 Difference]: Finished difference Result 83 states and 107 transitions. [2024-11-06 22:50:02,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 22:50:02,356 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2024-11-06 22:50:02,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:50:02,356 INFO L225 Difference]: With dead ends: 83 [2024-11-06 22:50:02,356 INFO L226 Difference]: Without dead ends: 81 [2024-11-06 22:50:02,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-06 22:50:02,357 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 8 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:50:02,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 167 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:50:02,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-06 22:50:02,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2024-11-06 22:50:02,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 47 states have internal predecessors, (49), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-06 22:50:02,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2024-11-06 22:50:02,365 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 52 [2024-11-06 22:50:02,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:50:02,366 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2024-11-06 22:50:02,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-06 22:50:02,366 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2024-11-06 22:50:02,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-06 22:50:02,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:50:02,367 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:50:02,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-06 22:50:02,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:50:02,570 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:50:02,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:50:02,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1724367982, now seen corresponding path program 1 times [2024-11-06 22:50:02,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:50:02,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82492560] [2024-11-06 22:50:02,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:50:02,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:50:02,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 22:50:02,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1167986906] [2024-11-06 22:50:02,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:50:02,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:50:02,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:50:02,586 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:50:02,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-06 22:50:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:02,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-06 22:50:02,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:50:02,849 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-06 22:50:02,849 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:50:03,026 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-06 22:50:03,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:50:03,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82492560] [2024-11-06 22:50:03,026 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 22:50:03,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167986906] [2024-11-06 22:50:03,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167986906] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-06 22:50:03,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 22:50:03,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-11-06 22:50:03,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360164081] [2024-11-06 22:50:03,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:50:03,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-06 22:50:03,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:50:03,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-06 22:50:03,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-11-06 22:50:03,027 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-06 22:50:03,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:50:03,112 INFO L93 Difference]: Finished difference Result 82 states and 103 transitions. [2024-11-06 22:50:03,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:50:03,113 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 59 [2024-11-06 22:50:03,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:50:03,113 INFO L225 Difference]: With dead ends: 82 [2024-11-06 22:50:03,113 INFO L226 Difference]: Without dead ends: 79 [2024-11-06 22:50:03,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-11-06 22:50:03,114 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 19 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:50:03,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 134 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:50:03,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-06 22:50:03,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-06 22:50:03,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 46 states have (on average 1.108695652173913) internal successors, (51), 49 states have internal predecessors, (51), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-06 22:50:03,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 99 transitions. [2024-11-06 22:50:03,131 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 99 transitions. Word has length 59 [2024-11-06 22:50:03,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:50:03,131 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 99 transitions. [2024-11-06 22:50:03,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-06 22:50:03,131 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 99 transitions. [2024-11-06 22:50:03,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-06 22:50:03,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:50:03,132 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 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, 1] [2024-11-06 22:50:03,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-06 22:50:03,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-06 22:50:03,333 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:50:03,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:50:03,334 INFO L85 PathProgramCache]: Analyzing trace with hash -666558580, now seen corresponding path program 1 times [2024-11-06 22:50:03,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:50:03,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71329071] [2024-11-06 22:50:03,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:50:03,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:50:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:03,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:50:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:03,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:50:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:03,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:50:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:03,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-06 22:50:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:03,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-06 22:50:03,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:03,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-06 22:50:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:03,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-06 22:50:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:03,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-06 22:50:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:03,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-06 22:50:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:03,452 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-06 22:50:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:03,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-06 22:50:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:03,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-06 22:50:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:03,472 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-06 22:50:03,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:50:03,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71329071] [2024-11-06 22:50:03,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71329071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:50:03,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079516269] [2024-11-06 22:50:03,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:50:03,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:50:03,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:50:03,474 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:50:03,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-06 22:50:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:03,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-06 22:50:03,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:50:03,567 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-06 22:50:03,567 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:50:03,654 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-06 22:50:03,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079516269] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:50:03,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:50:03,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2024-11-06 22:50:03,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574725909] [2024-11-06 22:50:03,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:50:03,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-06 22:50:03,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:50:03,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-06 22:50:03,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-06 22:50:03,656 INFO L87 Difference]: Start difference. First operand 79 states and 99 transitions. Second operand has 11 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-06 22:50:03,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:50:03,755 INFO L93 Difference]: Finished difference Result 89 states and 107 transitions. [2024-11-06 22:50:03,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-06 22:50:03,755 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 75 [2024-11-06 22:50:03,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:50:03,756 INFO L225 Difference]: With dead ends: 89 [2024-11-06 22:50:03,756 INFO L226 Difference]: Without dead ends: 87 [2024-11-06 22:50:03,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 167 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-06 22:50:03,757 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 14 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:50:03,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 118 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:50:03,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-06 22:50:03,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 64. [2024-11-06 22:50:03,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 40 states have (on average 1.075) internal successors, (43), 40 states have internal predecessors, (43), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-06 22:50:03,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2024-11-06 22:50:03,774 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 75 [2024-11-06 22:50:03,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:50:03,774 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2024-11-06 22:50:03,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-06 22:50:03,775 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2024-11-06 22:50:03,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-06 22:50:03,776 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:50:03,776 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 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] [2024-11-06 22:50:03,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-06 22:50:03,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:50:03,977 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:50:03,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:50:03,977 INFO L85 PathProgramCache]: Analyzing trace with hash -648409701, now seen corresponding path program 2 times [2024-11-06 22:50:03,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:50:03,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894065423] [2024-11-06 22:50:03,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:50:03,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:50:03,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:50:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:50:04,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:50:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-06 22:50:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-06 22:50:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-06 22:50:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-06 22:50:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,062 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-06 22:50:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-06 22:50:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-06 22:50:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-06 22:50:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-06 22:50:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,079 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-06 22:50:04,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:50:04,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894065423] [2024-11-06 22:50:04,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894065423] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:50:04,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563076676] [2024-11-06 22:50:04,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 22:50:04,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:50:04,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:50:04,081 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:50:04,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-06 22:50:04,122 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 22:50:04,122 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:50:04,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 22:50:04,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:50:04,176 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-06 22:50:04,176 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 22:50:04,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563076676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:50:04,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 22:50:04,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-06 22:50:04,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759288971] [2024-11-06 22:50:04,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:50:04,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:50:04,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:50:04,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:50:04,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-06 22:50:04,178 INFO L87 Difference]: Start difference. First operand 64 states and 73 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-06 22:50:04,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:50:04,254 INFO L93 Difference]: Finished difference Result 113 states and 137 transitions. [2024-11-06 22:50:04,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:50:04,256 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), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 76 [2024-11-06 22:50:04,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:50:04,257 INFO L225 Difference]: With dead ends: 113 [2024-11-06 22:50:04,257 INFO L226 Difference]: Without dead ends: 78 [2024-11-06 22:50:04,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-06 22:50:04,257 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 3 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:50:04,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 98 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:50:04,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-06 22:50:04,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2024-11-06 22:50:04,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 44 states have internal predecessors, (47), 21 states have call successors, (21), 8 states have call predecessors, (21), 8 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-06 22:50:04,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 89 transitions. [2024-11-06 22:50:04,269 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 89 transitions. Word has length 76 [2024-11-06 22:50:04,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:50:04,269 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 89 transitions. [2024-11-06 22:50:04,269 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), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-06 22:50:04,269 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 89 transitions. [2024-11-06 22:50:04,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-06 22:50:04,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:50:04,270 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:50:04,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-06 22:50:04,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:50:04,471 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:50:04,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:50:04,471 INFO L85 PathProgramCache]: Analyzing trace with hash 2052675103, now seen corresponding path program 1 times [2024-11-06 22:50:04,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:50:04,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751825526] [2024-11-06 22:50:04,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:50:04,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:50:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 22:50:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 22:50:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 22:50:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-06 22:50:04,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-06 22:50:04,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-06 22:50:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-06 22:50:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-06 22:50:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-06 22:50:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-06 22:50:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-06 22:50:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-06 22:50:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-06 22:50:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-06 22:50:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-06 22:50:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-11-06 22:50:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,603 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 30 proven. 13 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-06 22:50:04,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:50:04,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751825526] [2024-11-06 22:50:04,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751825526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:50:04,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960220661] [2024-11-06 22:50:04,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:50:04,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:50:04,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:50:04,606 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:50:04,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-06 22:50:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:50:04,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-06 22:50:04,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:50:04,764 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 30 proven. 13 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-06 22:50:04,764 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:50:04,941 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 35 proven. 8 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-06 22:50:04,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960220661] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:50:04,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:50:04,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2024-11-06 22:50:04,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054811658] [2024-11-06 22:50:04,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:50:04,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-06 22:50:04,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:50:04,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-06 22:50:04,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2024-11-06 22:50:04,943 INFO L87 Difference]: Start difference. First operand 74 states and 89 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 17 states have internal predecessors, (45), 12 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2024-11-06 22:50:05,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:50:05,455 INFO L93 Difference]: Finished difference Result 141 states and 182 transitions. [2024-11-06 22:50:05,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-06 22:50:05,455 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 17 states have internal predecessors, (45), 12 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) Word has length 99 [2024-11-06 22:50:05,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:50:05,455 INFO L225 Difference]: With dead ends: 141 [2024-11-06 22:50:05,455 INFO L226 Difference]: Without dead ends: 0 [2024-11-06 22:50:05,456 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 219 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=276, Invalid=1056, Unknown=0, NotChecked=0, Total=1332 [2024-11-06 22:50:05,457 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 50 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 22:50:05,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 641 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 22:50:05,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-06 22:50:05,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-06 22:50:05,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:50:05,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-06 22:50:05,457 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 99 [2024-11-06 22:50:05,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:50:05,457 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-06 22:50:05,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 17 states have internal predecessors, (45), 12 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2024-11-06 22:50:05,458 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-06 22:50:05,458 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-06 22:50:05,461 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-06 22:50:05,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-06 22:50:05,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:50:05,664 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:50:05,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-06 22:50:06,668 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-06 22:50:06,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:50:06 BoogieIcfgContainer [2024-11-06 22:50:06,691 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-06 22:50:06,692 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-06 22:50:06,692 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-06 22:50:06,692 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-06 22:50:06,692 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:49:59" (3/4) ... [2024-11-06 22:50:06,694 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-06 22:50:06,697 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-06 22:50:06,697 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-06 22:50:06,700 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-06 22:50:06,700 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-06 22:50:06,700 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-06 22:50:06,700 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-06 22:50:06,751 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-06 22:50:06,751 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-06 22:50:06,751 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-06 22:50:06,752 INFO L158 Benchmark]: Toolchain (without parser) took 7483.28ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 92.0MB in the beginning and 45.8MB in the end (delta: 46.2MB). Peak memory consumption was 72.0MB. Max. memory is 16.1GB. [2024-11-06 22:50:06,753 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 117.4MB. Free memory is still 81.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 22:50:06,753 INFO L158 Benchmark]: CACSL2BoogieTranslator took 156.10ms. Allocated memory is still 117.4MB. Free memory was 91.8MB in the beginning and 80.7MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 22:50:06,753 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.71ms. Allocated memory is still 117.4MB. Free memory was 80.7MB in the beginning and 79.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 22:50:06,753 INFO L158 Benchmark]: Boogie Preprocessor took 30.82ms. Allocated memory is still 117.4MB. Free memory was 79.5MB in the beginning and 78.4MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 22:50:06,753 INFO L158 Benchmark]: RCFGBuilder took 202.64ms. Allocated memory is still 117.4MB. Free memory was 78.3MB in the beginning and 67.8MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 22:50:06,753 INFO L158 Benchmark]: TraceAbstraction took 7009.34ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 67.3MB in the beginning and 51.2MB in the end (delta: 16.1MB). Peak memory consumption was 55.9MB. Max. memory is 16.1GB. [2024-11-06 22:50:06,753 INFO L158 Benchmark]: Witness Printer took 59.81ms. Allocated memory is still 142.6MB. Free memory was 51.2MB in the beginning and 45.8MB in the end (delta: 5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 22:50:06,754 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 117.4MB. Free memory is still 81.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 156.10ms. Allocated memory is still 117.4MB. Free memory was 91.8MB in the beginning and 80.7MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.71ms. Allocated memory is still 117.4MB. Free memory was 80.7MB in the beginning and 79.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.82ms. Allocated memory is still 117.4MB. Free memory was 79.5MB in the beginning and 78.4MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 202.64ms. Allocated memory is still 117.4MB. Free memory was 78.3MB in the beginning and 67.8MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 7009.34ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 67.3MB in the beginning and 51.2MB in the end (delta: 16.1MB). Peak memory consumption was 55.9MB. Max. memory is 16.1GB. * Witness Printer took 59.81ms. Allocated memory is still 142.6MB. Free memory was 51.2MB in the beginning and 45.8MB in the end (delta: 5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.9s, OverallIterations: 10, TraceHistogramMax: 14, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 166 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 139 mSDsluCounter, 1756 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1390 mSDsCounter, 122 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 797 IncrementalHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 122 mSolverCounterUnsat, 366 mSDtfsCounter, 797 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 954 GetRequests, 838 SyntacticMatches, 10 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=7, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 45 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 1016 NumberOfCodeBlocks, 1016 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 1128 ConstructedInterpolants, 0 QuantifiedInterpolants, 2407 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1157 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 19 InterpolantComputations, 7 PerfectInterpolantSequences, 2406/2493 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((((((((__int128) a * y) + r) == ((__int128) b + x)) && (b <= y)) && (x <= 50)) && (0 <= r)) && (r == x)) && (q == 0)) || (((((((0 <= x) && (x == (r + ((__int128) q * y)))) && (0 <= y)) && (x <= 50)) && (b <= ((__int128) r + y))) && (0 <= r)) && (((__int128) b + x) == ((((__int128) a * y) + r) + ((__int128) q * y))))) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((((((b == 0) && (x <= 50)) && (0 <= r)) && (r == x)) && (q == 0)) && (a == 0)) || ((((((((__int128) r + 1) <= y) && (0 <= x)) && (x == (r + ((__int128) q * y)))) && (b <= y)) && (x <= 50)) && (((__int128) b + x) == ((((__int128) a * y) + r) + ((__int128) q * y))))) || ((((((0 <= x) && (x == (r + ((__int128) q * y)))) && (0 <= y)) && (x <= 50)) && (0 <= ((__int128) r + y))) && (((__int128) b + x) == ((((__int128) a * y) + r) + ((__int128) q * y))))) - ProcedureContractResult [Line: 11]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-11-06 22:50:06,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE