./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G ! call(reach_error())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', 'd2bc2a3f53718ecf47344b6d9b2d76a5698712f748ff03cd831a90a334f72c9d'] 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/prodbin-ll_valuebound2.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d2bc2a3f53718ecf47344b6d9b2d76a5698712f748ff03cd831a90a334f72c9d --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 23:12:20,632 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 23:12:20,710 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 23:12:20,718 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 23:12:20,720 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 23:12:20,742 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 23:12:20,743 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 23:12:20,744 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 23:12:20,744 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 23:12:20,745 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 23:12:20,745 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 23:12:20,745 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 23:12:20,746 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 23:12:20,746 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 23:12:20,746 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 23:12:20,746 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 23:12:20,746 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 23:12:20,746 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 23:12:20,747 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 23:12:20,747 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 23:12:20,747 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 23:12:20,747 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 23:12:20,747 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 23:12:20,747 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 23:12:20,747 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 23:12:20,748 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 23:12:20,748 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 23:12:20,748 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 23:12:20,748 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 23:12:20,748 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 23:12:20,748 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 23:12:20,748 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 23:12:20,748 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 23:12:20,749 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 23:12:20,749 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 23:12:20,749 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 23:12:20,749 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 23:12:20,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 23:12:20,750 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 23:12:20,750 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 23:12:20,750 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 23:12:20,750 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 23:12:20,750 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 -> d2bc2a3f53718ecf47344b6d9b2d76a5698712f748ff03cd831a90a334f72c9d [2024-11-06 23:12:21,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 23:12:21,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 23:12:21,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 23:12:21,040 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 23:12:21,041 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 23:12:21,042 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.c [2024-11-06 23:12:22,321 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 23:12:22,514 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 23:12:22,515 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.c [2024-11-06 23:12:22,520 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f7cb6aaa4/64f6caa172474a36a2fc73455bdbe018/FLAG3f2c1b017 [2024-11-06 23:12:22,532 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f7cb6aaa4/64f6caa172474a36a2fc73455bdbe018 [2024-11-06 23:12:22,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 23:12:22,535 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 23:12:22,537 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 23:12:22,537 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 23:12:22,541 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 23:12:22,541 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:12:22" (1/1) ... [2024-11-06 23:12:22,542 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25ac0f82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:12:22, skipping insertion in model container [2024-11-06 23:12:22,542 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:12:22" (1/1) ... [2024-11-06 23:12:22,552 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 23:12:22,672 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/prodbin-ll_valuebound2.c[537,550] [2024-11-06 23:12:22,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 23:12:22,699 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 23:12:22,708 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/prodbin-ll_valuebound2.c[537,550] [2024-11-06 23:12:22,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 23:12:22,722 INFO L204 MainTranslator]: Completed translation [2024-11-06 23:12:22,722 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:12:22 WrapperNode [2024-11-06 23:12:22,723 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 23:12:22,724 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 23:12:22,725 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 23:12:22,725 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 23:12:22,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:12:22" (1/1) ... [2024-11-06 23:12:22,737 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:12:22" (1/1) ... [2024-11-06 23:12:22,751 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2024-11-06 23:12:22,752 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 23:12:22,753 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 23:12:22,753 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 23:12:22,754 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 23:12:22,760 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:12:22" (1/1) ... [2024-11-06 23:12:22,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:12:22" (1/1) ... [2024-11-06 23:12:22,761 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:12:22" (1/1) ... [2024-11-06 23:12:22,777 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-06 23:12:22,779 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:12:22" (1/1) ... [2024-11-06 23:12:22,779 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:12:22" (1/1) ... [2024-11-06 23:12:22,782 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:12:22" (1/1) ... [2024-11-06 23:12:22,789 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:12:22" (1/1) ... [2024-11-06 23:12:22,790 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:12:22" (1/1) ... [2024-11-06 23:12:22,793 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:12:22" (1/1) ... [2024-11-06 23:12:22,795 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 23:12:22,796 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 23:12:22,800 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 23:12:22,800 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 23:12:22,801 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:12:22" (1/1) ... [2024-11-06 23:12:22,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 23:12:22,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:12:22,835 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-06 23:12:22,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-06 23:12:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 23:12:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-06 23:12:22,862 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-06 23:12:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 23:12:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 23:12:22,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 23:12:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-06 23:12:22,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-06 23:12:22,923 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 23:12:22,924 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 23:12:23,053 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-06 23:12:23,054 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 23:12:23,066 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 23:12:23,066 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 23:12:23,067 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:12:23 BoogieIcfgContainer [2024-11-06 23:12:23,067 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 23:12:23,069 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 23:12:23,070 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 23:12:23,074 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 23:12:23,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:12:22" (1/3) ... [2024-11-06 23:12:23,075 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d795c3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:12:23, skipping insertion in model container [2024-11-06 23:12:23,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:12:22" (2/3) ... [2024-11-06 23:12:23,076 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d795c3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:12:23, skipping insertion in model container [2024-11-06 23:12:23,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:12:23" (3/3) ... [2024-11-06 23:12:23,078 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound2.c [2024-11-06 23:12:23,092 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 23:12:23,093 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 23:12:23,142 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 23:12:23,155 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;@2046ab39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 23:12:23,156 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 23:12:23,161 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-06 23:12:23,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-06 23:12:23,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:12:23,170 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:12:23,170 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:12:23,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:12:23,174 INFO L85 PathProgramCache]: Analyzing trace with hash -861605892, now seen corresponding path program 1 times [2024-11-06 23:12:23,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:12:23,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302670903] [2024-11-06 23:12:23,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:12:23,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:12:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:12:23,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:12:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:12:23,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 23:12:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:12:23,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 23:12:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:12:23,352 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 23:12:23,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:12:23,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302670903] [2024-11-06 23:12:23,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302670903] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:12:23,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:12:23,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 23:12:23,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735724179] [2024-11-06 23:12:23,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:12:23,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-06 23:12:23,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:12:23,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-06 23:12:23,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 23:12:23,381 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-06 23:12:23,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:12:23,401 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2024-11-06 23:12:23,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-06 23:12:23,403 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2024-11-06 23:12:23,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:12:23,408 INFO L225 Difference]: With dead ends: 51 [2024-11-06 23:12:23,408 INFO L226 Difference]: Without dead ends: 23 [2024-11-06 23:12:23,410 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 23:12:23,414 INFO L432 NwaCegarLoop]: 31 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, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:12:23,416 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:12:23,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-06 23:12:23,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-06 23:12:23,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-06 23:12:23,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-06 23:12:23,450 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 24 [2024-11-06 23:12:23,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:12:23,450 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-06 23:12:23,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-06 23:12:23,451 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-06 23:12:23,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-06 23:12:23,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:12:23,452 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:12:23,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 23:12:23,452 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:12:23,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:12:23,453 INFO L85 PathProgramCache]: Analyzing trace with hash -2010313222, now seen corresponding path program 1 times [2024-11-06 23:12:23,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:12:23,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256248387] [2024-11-06 23:12:23,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:12:23,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:12:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 23:12:23,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1918401766] [2024-11-06 23:12:23,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:12:23,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:12:23,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:12:23,511 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:12:23,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-06 23:12:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:12:23,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-06 23:12:23,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:12:23,890 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 23:12:23,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:12:24,002 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 23:12:24,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:12:24,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256248387] [2024-11-06 23:12:24,004 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 23:12:24,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918401766] [2024-11-06 23:12:24,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918401766] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-06 23:12:24,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 23:12:24,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2024-11-06 23:12:24,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731259505] [2024-11-06 23:12:24,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:12:24,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 23:12:24,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:12:24,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 23:12:24,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-06 23:12:24,009 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-06 23:12:24,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:12:24,087 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2024-11-06 23:12:24,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 23:12:24,087 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2024-11-06 23:12:24,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:12:24,089 INFO L225 Difference]: With dead ends: 34 [2024-11-06 23:12:24,089 INFO L226 Difference]: Without dead ends: 32 [2024-11-06 23:12:24,089 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-06 23:12:24,091 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 5 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 23:12:24,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 72 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 23:12:24,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-06 23:12:24,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2024-11-06 23:12:24,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-06 23:12:24,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2024-11-06 23:12:24,099 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 24 [2024-11-06 23:12:24,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:12:24,100 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2024-11-06 23:12:24,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-06 23:12:24,100 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2024-11-06 23:12:24,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-06 23:12:24,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:12:24,101 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, 1] [2024-11-06 23:12:24,119 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 23:12:24,305 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 23:12:24,306 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:12:24,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:12:24,306 INFO L85 PathProgramCache]: Analyzing trace with hash -895979555, now seen corresponding path program 1 times [2024-11-06 23:12:24,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:12:24,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209206979] [2024-11-06 23:12:24,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:12:24,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:12:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:12:24,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:12:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:12:24,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 23:12:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:12:24,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 23:12:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:12:24,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-06 23:12:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:12:24,554 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 23:12:24,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:12:24,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209206979] [2024-11-06 23:12:24,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209206979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:12:24,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:12:24,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-06 23:12:24,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99176597] [2024-11-06 23:12:24,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:12:24,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-06 23:12:24,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:12:24,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-06 23:12:24,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-06 23:12:24,556 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 23:12:24,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:12:24,618 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2024-11-06 23:12:24,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 23:12:24,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2024-11-06 23:12:24,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:12:24,620 INFO L225 Difference]: With dead ends: 39 [2024-11-06 23:12:24,620 INFO L226 Difference]: Without dead ends: 32 [2024-11-06 23:12:24,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-06 23:12:24,621 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 11 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:12:24,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 62 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:12:24,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-06 23:12:24,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-11-06 23:12:24,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-06 23:12:24,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2024-11-06 23:12:24,626 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 30 [2024-11-06 23:12:24,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:12:24,626 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2024-11-06 23:12:24,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 23:12:24,626 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2024-11-06 23:12:24,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-06 23:12:24,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:12:24,627 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:12:24,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 23:12:24,627 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:12:24,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:12:24,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1371702355, now seen corresponding path program 1 times [2024-11-06 23:12:24,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:12:24,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859749322] [2024-11-06 23:12:24,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:12:24,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:12:24,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 23:12:24,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1968220697] [2024-11-06 23:12:24,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:12:24,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:12:24,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:12:24,671 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:12:24,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-06 23:12:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:12:24,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-06 23:12:24,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:12:25,264 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 23:12:25,265 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:12:26,430 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 23:12:26,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:12:26,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859749322] [2024-11-06 23:12:26,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 23:12:26,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968220697] [2024-11-06 23:12:26,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968220697] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-06 23:12:26,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 23:12:26,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2024-11-06 23:12:26,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500543688] [2024-11-06 23:12:26,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:12:26,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 23:12:26,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:12:26,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 23:12:26,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-06 23:12:26,433 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 23:12:27,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:12:27,433 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2024-11-06 23:12:27,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-06 23:12:27,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 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 33 [2024-11-06 23:12:27,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:12:27,434 INFO L225 Difference]: With dead ends: 42 [2024-11-06 23:12:27,434 INFO L226 Difference]: Without dead ends: 40 [2024-11-06 23:12:27,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-06 23:12:27,435 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-06 23:12:27,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 88 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-06 23:12:27,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-06 23:12:27,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2024-11-06 23:12:27,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-06 23:12:27,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2024-11-06 23:12:27,442 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 33 [2024-11-06 23:12:27,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:12:27,443 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2024-11-06 23:12:27,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 23:12:27,443 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2024-11-06 23:12:27,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-06 23:12:27,444 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:12:27,444 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:12:27,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-06 23:12:27,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:12:27,645 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:12:27,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:12:27,645 INFO L85 PathProgramCache]: Analyzing trace with hash 403305007, now seen corresponding path program 1 times [2024-11-06 23:12:27,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:12:27,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599096983] [2024-11-06 23:12:27,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:12:27,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:12:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 23:12:27,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [512349656] [2024-11-06 23:12:27,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:12:27,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:12:27,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:12:27,681 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:12:27,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-06 23:12:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:12:27,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-06 23:12:27,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:12:28,146 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 23:12:28,146 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:12:28,785 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 23:12:28,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:12:28,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599096983] [2024-11-06 23:12:28,786 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 23:12:28,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512349656] [2024-11-06 23:12:28,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512349656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:12:28,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 23:12:28,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 21 [2024-11-06 23:12:28,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122340208] [2024-11-06 23:12:28,787 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 23:12:28,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-06 23:12:28,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:12:28,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-06 23:12:28,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2024-11-06 23:12:28,788 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 18 states have internal predecessors, (32), 6 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-06 23:12:29,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:12:29,411 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2024-11-06 23:12:29,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-06 23:12:29,411 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 18 states have internal predecessors, (32), 6 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 33 [2024-11-06 23:12:29,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:12:29,413 INFO L225 Difference]: With dead ends: 64 [2024-11-06 23:12:29,413 INFO L226 Difference]: Without dead ends: 57 [2024-11-06 23:12:29,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2024-11-06 23:12:29,414 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 38 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 23:12:29,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 171 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 23:12:29,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-06 23:12:29,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-06 23:12:29,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 43 states have internal predecessors, (50), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-06 23:12:29,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2024-11-06 23:12:29,430 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 33 [2024-11-06 23:12:29,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:12:29,431 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2024-11-06 23:12:29,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 18 states have internal predecessors, (32), 6 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-06 23:12:29,431 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2024-11-06 23:12:29,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-06 23:12:29,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:12:29,432 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:12:29,449 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-06 23:12:29,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:12:29,632 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:12:29,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:12:29,633 INFO L85 PathProgramCache]: Analyzing trace with hash 685673296, now seen corresponding path program 1 times [2024-11-06 23:12:29,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:12:29,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087812863] [2024-11-06 23:12:29,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:12:29,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:12:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 23:12:29,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1288925732] [2024-11-06 23:12:29,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:12:29,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:12:29,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:12:29,664 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:12:29,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-06 23:12:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:12:29,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-06 23:12:29,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:12:29,774 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-06 23:12:29,775 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:12:29,861 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-06 23:12:29,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:12:29,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087812863] [2024-11-06 23:12:29,862 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 23:12:29,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288925732] [2024-11-06 23:12:29,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288925732] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:12:29,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 23:12:29,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2024-11-06 23:12:29,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733108580] [2024-11-06 23:12:29,862 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 23:12:29,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-06 23:12:29,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:12:29,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-06 23:12:29,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-06 23:12:29,864 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-06 23:12:29,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:12:29,939 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2024-11-06 23:12:29,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-06 23:12:29,940 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2024-11-06 23:12:29,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:12:29,941 INFO L225 Difference]: With dead ends: 64 [2024-11-06 23:12:29,943 INFO L226 Difference]: Without dead ends: 57 [2024-11-06 23:12:29,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-06 23:12:29,944 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 23:12:29,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 94 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 23:12:29,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-06 23:12:29,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2024-11-06 23:12:29,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 41 states have (on average 1.146341463414634) internal successors, (47), 42 states have internal predecessors, (47), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-06 23:12:29,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2024-11-06 23:12:29,962 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 39 [2024-11-06 23:12:29,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:12:29,963 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2024-11-06 23:12:29,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-06 23:12:29,963 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2024-11-06 23:12:29,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-06 23:12:29,966 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:12:29,966 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:12:29,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-06 23:12:30,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-06 23:12:30,167 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:12:30,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:12:30,167 INFO L85 PathProgramCache]: Analyzing trace with hash -662815268, now seen corresponding path program 1 times [2024-11-06 23:12:30,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:12:30,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714074506] [2024-11-06 23:12:30,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:12:30,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:12:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:12:30,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:12:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:12:30,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 23:12:30,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:12:30,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 23:12:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:12:30,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-06 23:12:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:12:30,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-06 23:12:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:12:30,577 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-06 23:12:30,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:12:30,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714074506] [2024-11-06 23:12:30,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714074506] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:12:30,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361575214] [2024-11-06 23:12:30,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:12:30,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:12:30,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:12:30,580 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:12:30,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-06 23:12:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:12:30,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-06 23:12:30,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:12:30,719 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-06 23:12:30,719 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:12:30,940 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-06 23:12:30,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361575214] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:12:30,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:12:30,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 12 [2024-11-06 23:12:30,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885751151] [2024-11-06 23:12:30,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:12:30,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-06 23:12:30,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:12:30,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-06 23:12:30,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-06 23:12:30,942 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 10 states have internal predecessors, (34), 7 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-06 23:12:31,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:12:31,055 INFO L93 Difference]: Finished difference Result 86 states and 97 transitions. [2024-11-06 23:12:31,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-06 23:12:31,056 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 10 states have internal predecessors, (34), 7 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 42 [2024-11-06 23:12:31,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:12:31,056 INFO L225 Difference]: With dead ends: 86 [2024-11-06 23:12:31,056 INFO L226 Difference]: Without dead ends: 47 [2024-11-06 23:12:31,057 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 84 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-06 23:12:31,057 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 9 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 23:12:31,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 120 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 23:12:31,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-06 23:12:31,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-06 23:12:31,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-06 23:12:31,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2024-11-06 23:12:31,064 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 42 [2024-11-06 23:12:31,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:12:31,064 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2024-11-06 23:12:31,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 10 states have internal predecessors, (34), 7 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-06 23:12:31,065 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2024-11-06 23:12:31,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-06 23:12:31,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:12:31,067 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:12:31,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-06 23:12:31,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:12:31,268 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:12:31,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:12:31,268 INFO L85 PathProgramCache]: Analyzing trace with hash 743390522, now seen corresponding path program 2 times [2024-11-06 23:12:31,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:12:31,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158755661] [2024-11-06 23:12:31,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:12:31,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:12:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:12:31,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 23:12:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:12:31,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-06 23:12:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:12:31,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-06 23:12:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:12:31,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-06 23:12:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:12:31,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-06 23:12:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:12:31,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-06 23:12:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:12:31,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-06 23:12:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:12:31,880 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 38 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-06 23:12:31,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:12:31,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158755661] [2024-11-06 23:12:31,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158755661] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:12:31,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54580622] [2024-11-06 23:12:31,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 23:12:31,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:12:31,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:12:31,883 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:12:31,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-06 23:12:31,987 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 23:12:31,987 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:12:31,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-06 23:12:31,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:12:32,102 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 50 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-06 23:12:32,104 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:12:32,409 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 38 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-06 23:12:32,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54580622] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:12:32,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:12:32,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-11-06 23:12:32,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035464962] [2024-11-06 23:12:32,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:12:32,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-06 23:12:32,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:12:32,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-06 23:12:32,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-11-06 23:12:32,411 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 17 states have internal predecessors, (47), 10 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-06 23:12:32,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:12:32,550 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2024-11-06 23:12:32,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-06 23:12:32,550 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 17 states have internal predecessors, (47), 10 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) Word has length 60 [2024-11-06 23:12:32,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:12:32,551 INFO L225 Difference]: With dead ends: 51 [2024-11-06 23:12:32,551 INFO L226 Difference]: Without dead ends: 0 [2024-11-06 23:12:32,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2024-11-06 23:12:32,552 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 23:12:32,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 156 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 23:12:32,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-06 23:12:32,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-06 23:12:32,552 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 23:12:32,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-06 23:12:32,553 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2024-11-06 23:12:32,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:12:32,553 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-06 23:12:32,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 17 states have internal predecessors, (47), 10 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-06 23:12:32,553 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-06 23:12:32,553 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-06 23:12:32,571 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-06 23:12:32,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-06 23:12:32,772 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,SelfDestructingSolverStorable7 [2024-11-06 23:12:32,774 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2024-11-06 23:12:32,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-06 23:12:33,168 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-06 23:12:33,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:12:33 BoogieIcfgContainer [2024-11-06 23:12:33,194 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-06 23:12:33,195 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-06 23:12:33,195 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-06 23:12:33,195 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-06 23:12:33,195 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:12:23" (3/4) ... [2024-11-06 23:12:33,197 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-06 23:12:33,202 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-06 23:12:33,202 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-06 23:12:33,204 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-06 23:12:33,204 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-06 23:12:33,204 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-06 23:12:33,204 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-06 23:12:33,260 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-06 23:12:33,260 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-06 23:12:33,260 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-06 23:12:33,261 INFO L158 Benchmark]: Toolchain (without parser) took 10725.38ms. Allocated memory was 117.4MB in the beginning and 159.4MB in the end (delta: 41.9MB). Free memory was 91.6MB in the beginning and 107.5MB in the end (delta: -15.9MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. [2024-11-06 23:12:33,261 INFO L158 Benchmark]: CDTParser took 0.72ms. Allocated memory is still 117.4MB. Free memory is still 81.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 23:12:33,261 INFO L158 Benchmark]: CACSL2BoogieTranslator took 186.85ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 80.5MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 23:12:33,261 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.08ms. Allocated memory is still 117.4MB. Free memory was 80.5MB in the beginning and 79.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 23:12:33,261 INFO L158 Benchmark]: Boogie Preprocessor took 42.61ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 78.2MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 23:12:33,261 INFO L158 Benchmark]: RCFGBuilder took 270.79ms. Allocated memory is still 117.4MB. Free memory was 78.2MB in the beginning and 68.2MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 23:12:33,262 INFO L158 Benchmark]: TraceAbstraction took 10124.90ms. Allocated memory was 117.4MB in the beginning and 159.4MB in the end (delta: 41.9MB). Free memory was 67.7MB in the beginning and 110.8MB in the end (delta: -43.1MB). Peak memory consumption was 63.7MB. Max. memory is 16.1GB. [2024-11-06 23:12:33,262 INFO L158 Benchmark]: Witness Printer took 65.55ms. Allocated memory is still 159.4MB. Free memory was 110.8MB in the beginning and 107.5MB in the end (delta: 3.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 23:12:33,263 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.72ms. Allocated memory is still 117.4MB. Free memory is still 81.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 186.85ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 80.5MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.08ms. Allocated memory is still 117.4MB. Free memory was 80.5MB in the beginning and 79.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 42.61ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 78.2MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 270.79ms. Allocated memory is still 117.4MB. Free memory was 78.2MB in the beginning and 68.2MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 10124.90ms. Allocated memory was 117.4MB in the beginning and 159.4MB in the end (delta: 41.9MB). Free memory was 67.7MB in the beginning and 110.8MB in the end (delta: -43.1MB). Peak memory consumption was 63.7MB. Max. memory is 16.1GB. * Witness Printer took 65.55ms. Allocated memory is still 159.4MB. Free memory was 110.8MB in the beginning and 107.5MB in the end (delta: 3.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 15]: 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.6s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 87 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 82 mSDsluCounter, 794 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 634 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 627 IncrementalHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 160 mSDtfsCounter, 627 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 532 GetRequests, 427 SyntacticMatches, 13 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=5, InterpolantAutomatonStates: 64, 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, 8 MinimizatonAttempts, 7 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 516 NumberOfCodeBlocks, 516 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 602 ConstructedInterpolants, 1 QuantifiedInterpolants, 2378 SizeOfPredicates, 11 NumberOfNonLiveVariables, 578 ConjunctsInSsa, 103 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 459/493 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: 34]: Loop Invariant Derived loop invariant: (((((((((a <= 2) && (y == 1)) && (x == ((long long) 2 * a))) && (z == 0)) && (1 == ((b >= 0) ? (b / 2) : ((b / 2) - 1)))) && (0 <= a)) && (((b >= 0) ? (b % 2) : ((b % 2) + 2)) != 1)) || (((((((a <= 2) && (b == y)) && (b <= 2)) && (1 <= b)) && ((z + ((__int128) x * y)) == ((long long) a * b))) && (0 <= a)) && (a == x))) || ((((((((((y >= 0) ? (y / 2) : ((y / 2) - 1)) <= 0) && (a <= 2)) && (b <= 2)) && (1 <= b)) && ((z + ((__int128) x * y)) == ((long long) a * b))) && (((y >= 0) ? (y % 2) : ((y % 2) + 2)) <= 0)) && (0 <= a)) && (0 <= ((__int128) y + 1)))) - ProcedureContractResult [Line: 9]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 12]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-11-06 23:12:33,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE