./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.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/hard2_valuebound1.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', '45ff7b74faf4250f77b788e07275d725ea3dbcc73af0b2b0d64dcf5aa7f7b78a'] 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/hard2_valuebound1.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 45ff7b74faf4250f77b788e07275d725ea3dbcc73af0b2b0d64dcf5aa7f7b78a --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 23:06:47,708 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 23:06:47,797 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 23:06:47,801 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 23:06:47,801 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 23:06:47,829 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 23:06:47,831 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 23:06:47,831 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 23:06:47,832 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 23:06:47,832 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 23:06:47,832 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 23:06:47,833 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 23:06:47,833 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 23:06:47,834 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 23:06:47,834 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 23:06:47,834 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 23:06:47,834 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 23:06:47,834 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 23:06:47,835 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 23:06:47,835 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 23:06:47,835 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 23:06:47,835 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 23:06:47,835 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 23:06:47,835 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 23:06:47,835 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 23:06:47,835 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 23:06:47,836 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 23:06:47,836 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 23:06:47,836 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 23:06:47,836 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 23:06:47,836 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 23:06:47,836 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 23:06:47,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 23:06:47,837 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 23:06:47,837 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 23:06:47,837 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 23:06:47,837 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 23:06:47,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 23:06:47,838 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 23:06:47,839 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 23:06:47,839 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 23:06:47,839 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 23:06:47,839 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 -> 45ff7b74faf4250f77b788e07275d725ea3dbcc73af0b2b0d64dcf5aa7f7b78a [2024-11-06 23:06:48,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 23:06:48,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 23:06:48,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 23:06:48,139 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 23:06:48,140 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 23:06:48,142 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c [2024-11-06 23:06:49,383 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 23:06:49,591 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 23:06:49,592 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c [2024-11-06 23:06:49,600 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7ab7c916c/f21f8939dff54ddcb898d0fb0dc894e7/FLAG8a1009439 [2024-11-06 23:06:49,612 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7ab7c916c/f21f8939dff54ddcb898d0fb0dc894e7 [2024-11-06 23:06:49,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 23:06:49,616 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 23:06:49,616 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 23:06:49,617 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 23:06:49,619 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 23:06:49,620 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:06:49" (1/1) ... [2024-11-06 23:06:49,620 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cf14d1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:49, skipping insertion in model container [2024-11-06 23:06:49,621 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:06:49" (1/1) ... [2024-11-06 23:06:49,631 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 23:06:49,768 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/hard2_valuebound1.c[526,539] [2024-11-06 23:06:49,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 23:06:49,798 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 23:06:49,809 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/hard2_valuebound1.c[526,539] [2024-11-06 23:06:49,817 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 23:06:49,831 INFO L204 MainTranslator]: Completed translation [2024-11-06 23:06:49,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:49 WrapperNode [2024-11-06 23:06:49,833 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 23:06:49,834 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 23:06:49,835 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 23:06:49,835 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 23:06:49,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:49" (1/1) ... [2024-11-06 23:06:49,851 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:49" (1/1) ... [2024-11-06 23:06:49,866 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2024-11-06 23:06:49,867 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 23:06:49,869 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 23:06:49,869 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 23:06:49,869 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 23:06:49,877 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:49" (1/1) ... [2024-11-06 23:06:49,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:49" (1/1) ... [2024-11-06 23:06:49,878 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:49" (1/1) ... [2024-11-06 23:06:49,900 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-11-06 23:06:49,900 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:49" (1/1) ... [2024-11-06 23:06:49,900 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:49" (1/1) ... [2024-11-06 23:06:49,903 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:49" (1/1) ... [2024-11-06 23:06:49,907 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:49" (1/1) ... [2024-11-06 23:06:49,911 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:49" (1/1) ... [2024-11-06 23:06:49,911 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:49" (1/1) ... [2024-11-06 23:06:49,912 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 23:06:49,917 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 23:06:49,917 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 23:06:49,917 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 23:06:49,918 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:49" (1/1) ... [2024-11-06 23:06:49,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 23:06:49,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:06:49,951 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 23:06:49,959 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 23:06:49,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 23:06:49,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 23:06:49,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-06 23:06:49,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 23:06:49,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 23:06:49,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-06 23:06:49,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-06 23:06:50,045 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 23:06:50,047 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 23:06:50,165 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-06 23:06:50,166 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 23:06:50,173 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 23:06:50,174 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-06 23:06:50,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:06:50 BoogieIcfgContainer [2024-11-06 23:06:50,174 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 23:06:50,177 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 23:06:50,178 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 23:06:50,183 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 23:06:50,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:06:49" (1/3) ... [2024-11-06 23:06:50,184 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd8fcfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:06:50, skipping insertion in model container [2024-11-06 23:06:50,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:49" (2/3) ... [2024-11-06 23:06:50,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd8fcfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:06:50, skipping insertion in model container [2024-11-06 23:06:50,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:06:50" (3/3) ... [2024-11-06 23:06:50,187 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound1.c [2024-11-06 23:06:50,202 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 23:06:50,204 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 23:06:50,255 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 23:06:50,267 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;@134201c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 23:06:50,267 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 23:06:50,273 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-06 23:06:50,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-06 23:06:50,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:06:50,280 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:06:50,281 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:06:50,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:06:50,288 INFO L85 PathProgramCache]: Analyzing trace with hash -586848446, now seen corresponding path program 1 times [2024-11-06 23:06:50,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:06:50,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047861995] [2024-11-06 23:06:50,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:06:50,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:06:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:50,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 23:06:50,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:06:50,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047861995] [2024-11-06 23:06:50,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047861995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:06:50,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:06:50,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 23:06:50,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014284288] [2024-11-06 23:06:50,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:06:50,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-06 23:06:50,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:06:50,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-06 23:06:50,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 23:06:50,460 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 23:06:50,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:06:50,475 INFO L93 Difference]: Finished difference Result 49 states and 83 transitions. [2024-11-06 23:06:50,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-06 23:06:50,477 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-06 23:06:50,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:06:50,482 INFO L225 Difference]: With dead ends: 49 [2024-11-06 23:06:50,482 INFO L226 Difference]: Without dead ends: 22 [2024-11-06 23:06:50,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 23:06:50,488 INFO L432 NwaCegarLoop]: 34 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, 34 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 23:06:50,489 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:06:50,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-06 23:06:50,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-06 23:06:50,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-06 23:06:50,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2024-11-06 23:06:50,526 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 9 [2024-11-06 23:06:50,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:06:50,527 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2024-11-06 23:06:50,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 23:06:50,528 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2024-11-06 23:06:50,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-06 23:06:50,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:06:50,530 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:06:50,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 23:06:50,530 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:06:50,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:06:50,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1188158916, now seen corresponding path program 1 times [2024-11-06 23:06:50,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:06:50,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579722651] [2024-11-06 23:06:50,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:06:50,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:06:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:50,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 23:06:50,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:06:50,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579722651] [2024-11-06 23:06:50,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579722651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:06:50,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:06:50,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 23:06:50,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883514017] [2024-11-06 23:06:50,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:06:50,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 23:06:50,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:06:50,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 23:06:50,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 23:06:50,694 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 23:06:50,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:06:50,768 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2024-11-06 23:06:50,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 23:06:50,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-06 23:06:50,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:06:50,770 INFO L225 Difference]: With dead ends: 35 [2024-11-06 23:06:50,771 INFO L226 Difference]: Without dead ends: 33 [2024-11-06 23:06:50,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-06 23:06:50,772 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 9 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:06:50,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 90 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:06:50,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-06 23:06:50,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2024-11-06 23:06:50,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-06 23:06:50,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2024-11-06 23:06:50,781 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 9 [2024-11-06 23:06:50,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:06:50,782 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2024-11-06 23:06:50,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 23:06:50,782 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2024-11-06 23:06:50,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-06 23:06:50,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:06:50,783 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:06:50,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 23:06:50,783 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:06:50,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:06:50,783 INFO L85 PathProgramCache]: Analyzing trace with hash -697944935, now seen corresponding path program 1 times [2024-11-06 23:06:50,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:06:50,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158142624] [2024-11-06 23:06:50,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:06:50,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:06:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:50,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-06 23:06:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:50,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 23:06:50,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:06:50,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158142624] [2024-11-06 23:06:50,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158142624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:06:50,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:06:50,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 23:06:50,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568488726] [2024-11-06 23:06:50,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:06:50,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 23:06:50,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:06:50,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 23:06:50,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 23:06:50,914 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-06 23:06:50,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:06:50,978 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2024-11-06 23:06:50,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 23:06:50,978 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), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-11-06 23:06:50,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:06:50,979 INFO L225 Difference]: With dead ends: 39 [2024-11-06 23:06:50,979 INFO L226 Difference]: Without dead ends: 37 [2024-11-06 23:06:50,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-06 23:06:50,980 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 9 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:06:50,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 87 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:06:50,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-06 23:06:50,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2024-11-06 23:06:50,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-06 23:06:50,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2024-11-06 23:06:50,990 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 14 [2024-11-06 23:06:50,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:06:50,991 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-11-06 23:06:50,991 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), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-06 23:06:50,991 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2024-11-06 23:06:50,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-06 23:06:50,993 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:06:50,993 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:06:50,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 23:06:50,993 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:06:50,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:06:50,994 INFO L85 PathProgramCache]: Analyzing trace with hash 262992548, now seen corresponding path program 1 times [2024-11-06 23:06:50,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:06:50,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269548767] [2024-11-06 23:06:50,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:06:50,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:06:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 23:06:51,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [385978094] [2024-11-06 23:06:51,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:06:51,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:06:51,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:06:51,016 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 23:06:51,017 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 23:06:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:51,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-06 23:06:51,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:06:51,181 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 23:06:51,181 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 23:06:51,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:06:51,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269548767] [2024-11-06 23:06:51,182 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 23:06:51,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385978094] [2024-11-06 23:06:51,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385978094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:06:51,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:06:51,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 23:06:51,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235005305] [2024-11-06 23:06:51,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:06:51,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 23:06:51,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:06:51,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 23:06:51,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 23:06:51,184 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 23:06:51,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:06:51,263 INFO L93 Difference]: Finished difference Result 56 states and 73 transitions. [2024-11-06 23:06:51,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 23:06:51,264 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), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2024-11-06 23:06:51,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:06:51,264 INFO L225 Difference]: With dead ends: 56 [2024-11-06 23:06:51,265 INFO L226 Difference]: Without dead ends: 43 [2024-11-06 23:06:51,265 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-06 23:06:51,266 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 5 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 23:06:51,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 89 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 23:06:51,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-06 23:06:51,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-11-06 23:06:51,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 27 states have internal predecessors, (31), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-06 23:06:51,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2024-11-06 23:06:51,283 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 19 [2024-11-06 23:06:51,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:06:51,283 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2024-11-06 23:06:51,283 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), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 23:06:51,283 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2024-11-06 23:06:51,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-06 23:06:51,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:06:51,284 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:06:51,301 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 23:06:51,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:06:51,485 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:06:51,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:06:51,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1807142342, now seen corresponding path program 1 times [2024-11-06 23:06:51,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:06:51,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543063664] [2024-11-06 23:06:51,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:06:51,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:06:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 23:06:51,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1724841276] [2024-11-06 23:06:51,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:06:51,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:06:51,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:06:51,509 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 23:06:51,511 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 23:06:51,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:51,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-06 23:06:51,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:06:51,656 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 23:06:51,656 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:06:51,855 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 23:06:51,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:06:51,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543063664] [2024-11-06 23:06:51,855 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 23:06:51,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724841276] [2024-11-06 23:06:51,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724841276] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:06:51,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 23:06:51,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-11-06 23:06:51,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581482121] [2024-11-06 23:06:51,856 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 23:06:51,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-06 23:06:51,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:06:51,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-06 23:06:51,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-06 23:06:51,857 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 23:06:51,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:06:51,953 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2024-11-06 23:06:51,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-06 23:06:51,953 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 26 [2024-11-06 23:06:51,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:06:51,954 INFO L225 Difference]: With dead ends: 56 [2024-11-06 23:06:51,954 INFO L226 Difference]: Without dead ends: 54 [2024-11-06 23:06:51,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-06 23:06:51,955 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 23:06:51,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 68 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 23:06:51,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-06 23:06:51,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2024-11-06 23:06:51,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 32 states have (on average 1.21875) internal successors, (39), 34 states have internal predecessors, (39), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-06 23:06:51,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2024-11-06 23:06:51,964 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 26 [2024-11-06 23:06:51,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:06:51,964 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2024-11-06 23:06:51,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-06 23:06:51,964 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2024-11-06 23:06:51,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-06 23:06:51,965 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:06:51,965 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:06:51,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-06 23:06:52,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:06:52,166 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:06:52,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:06:52,167 INFO L85 PathProgramCache]: Analyzing trace with hash -979933353, now seen corresponding path program 1 times [2024-11-06 23:06:52,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:06:52,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218404609] [2024-11-06 23:06:52,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:06:52,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:06:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 23:06:52,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [32925252] [2024-11-06 23:06:52,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:06:52,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:06:52,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:06:52,196 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 23:06:52,197 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 23:06:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:52,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-06 23:06:52,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:06:52,360 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-06 23:06:52,361 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:06:52,442 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-06 23:06:52,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:06:52,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218404609] [2024-11-06 23:06:52,442 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 23:06:52,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32925252] [2024-11-06 23:06:52,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32925252] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-06 23:06:52,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 23:06:52,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-11-06 23:06:52,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908550622] [2024-11-06 23:06:52,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:06:52,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 23:06:52,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:06:52,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 23:06:52,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-06 23:06:52,444 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 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 23:06:54,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-06 23:06:54,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:06:54,041 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2024-11-06 23:06:54,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 23:06:54,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 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 36 [2024-11-06 23:06:54,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:06:54,044 INFO L225 Difference]: With dead ends: 63 [2024-11-06 23:06:54,044 INFO L226 Difference]: Without dead ends: 61 [2024-11-06 23:06:54,044 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-06 23:06:54,045 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 5 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-06 23:06:54,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 82 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-06 23:06:54,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-06 23:06:54,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2024-11-06 23:06:54,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 39 states have internal predecessors, (43), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-06 23:06:54,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 76 transitions. [2024-11-06 23:06:54,060 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 76 transitions. Word has length 36 [2024-11-06 23:06:54,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:06:54,061 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 76 transitions. [2024-11-06 23:06:54,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 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 23:06:54,061 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 76 transitions. [2024-11-06 23:06:54,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-06 23:06:54,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:06:54,066 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:06:54,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-06 23:06:54,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:06:54,266 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:06:54,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:06:54,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1438911711, now seen corresponding path program 1 times [2024-11-06 23:06:54,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:06:54,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883536191] [2024-11-06 23:06:54,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:06:54,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:06:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:54,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-06 23:06:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:54,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-06 23:06:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:54,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 23:06:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:54,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-06 23:06:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:54,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-06 23:06:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:54,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-06 23:06:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:54,436 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-06 23:06:54,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:06:54,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883536191] [2024-11-06 23:06:54,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883536191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:06:54,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 23:06:54,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 23:06:54,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819506831] [2024-11-06 23:06:54,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:06:54,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 23:06:54,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:06:54,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 23:06:54,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 23:06:54,439 INFO L87 Difference]: Start difference. First operand 60 states and 76 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-06 23:06:54,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:06:54,499 INFO L93 Difference]: Finished difference Result 68 states and 84 transitions. [2024-11-06 23:06:54,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 23:06:54,500 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 42 [2024-11-06 23:06:54,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:06:54,501 INFO L225 Difference]: With dead ends: 68 [2024-11-06 23:06:54,501 INFO L226 Difference]: Without dead ends: 56 [2024-11-06 23:06:54,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-06 23:06:54,502 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:06:54,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 99 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:06:54,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-06 23:06:54,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-06 23:06:54,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 37 states have internal predecessors, (40), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-06 23:06:54,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2024-11-06 23:06:54,524 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 42 [2024-11-06 23:06:54,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:06:54,524 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2024-11-06 23:06:54,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-06 23:06:54,524 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2024-11-06 23:06:54,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-06 23:06:54,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:06:54,526 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:06:54,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-06 23:06:54,526 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:06:54,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:06:54,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1034157389, now seen corresponding path program 1 times [2024-11-06 23:06:54,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:06:54,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787282231] [2024-11-06 23:06:54,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:06:54,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:06:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 23:06:54,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [991138491] [2024-11-06 23:06:54,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:06:54,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:06:54,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:06:54,573 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 23:06:54,575 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 23:06:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:54,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-06 23:06:54,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:06:54,971 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 18 proven. 26 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-06 23:06:54,972 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:06:56,420 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 18 proven. 26 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-06 23:06:56,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:06:56,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787282231] [2024-11-06 23:06:56,421 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 23:06:56,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991138491] [2024-11-06 23:06:56,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991138491] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:06:56,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 23:06:56,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2024-11-06 23:06:56,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436552417] [2024-11-06 23:06:56,421 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 23:06:56,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-06 23:06:56,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:06:56,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-06 23:06:56,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-06 23:06:56,424 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-06 23:06:56,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:06:56,969 INFO L93 Difference]: Finished difference Result 131 states and 176 transitions. [2024-11-06 23:06:56,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-06 23:06:56,970 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 56 [2024-11-06 23:06:56,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:06:56,971 INFO L225 Difference]: With dead ends: 131 [2024-11-06 23:06:56,971 INFO L226 Difference]: Without dead ends: 108 [2024-11-06 23:06:56,972 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-11-06 23:06:56,972 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 28 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 23:06:56,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 167 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 23:06:56,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-06 23:06:56,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2024-11-06 23:06:56,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 64 states have (on average 1.21875) internal successors, (78), 69 states have internal predecessors, (78), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (30), 26 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-06 23:06:56,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 139 transitions. [2024-11-06 23:06:56,998 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 139 transitions. Word has length 56 [2024-11-06 23:06:56,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:06:56,998 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 139 transitions. [2024-11-06 23:06:56,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-06 23:06:56,999 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 139 transitions. [2024-11-06 23:06:57,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-06 23:06:57,000 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:06:57,000 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:06:57,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-06 23:06:57,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-06 23:06:57,205 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:06:57,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:06:57,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1199454569, now seen corresponding path program 1 times [2024-11-06 23:06:57,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:06:57,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224772578] [2024-11-06 23:06:57,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:06:57,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:06:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-06 23:06:57,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1486683972] [2024-11-06 23:06:57,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:06:57,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:06:57,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:06:57,241 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 23:06:57,242 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 23:06:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:57,307 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-06 23:06:57,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:06:57,562 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 22 proven. 34 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-06 23:06:57,563 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:06:58,066 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 22 proven. 34 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-06 23:06:58,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:06:58,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224772578] [2024-11-06 23:06:58,066 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-06 23:06:58,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486683972] [2024-11-06 23:06:58,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486683972] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:06:58,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 23:06:58,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2024-11-06 23:06:58,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366495257] [2024-11-06 23:06:58,067 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 23:06:58,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-06 23:06:58,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:06:58,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-06 23:06:58,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-06 23:06:58,068 INFO L87 Difference]: Start difference. First operand 106 states and 139 transitions. Second operand has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2024-11-06 23:06:58,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:06:58,715 INFO L93 Difference]: Finished difference Result 161 states and 214 transitions. [2024-11-06 23:06:58,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-06 23:06:58,716 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) Word has length 67 [2024-11-06 23:06:58,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:06:58,719 INFO L225 Difference]: With dead ends: 161 [2024-11-06 23:06:58,719 INFO L226 Difference]: Without dead ends: 129 [2024-11-06 23:06:58,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-11-06 23:06:58,720 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 15 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-06 23:06:58,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 202 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-06 23:06:58,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-06 23:06:58,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 103. [2024-11-06 23:06:58,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 63 states have (on average 1.1746031746031746) internal successors, (74), 68 states have internal predecessors, (74), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (27), 23 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-06 23:06:58,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 129 transitions. [2024-11-06 23:06:58,762 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 129 transitions. Word has length 67 [2024-11-06 23:06:58,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:06:58,762 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 129 transitions. [2024-11-06 23:06:58,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2024-11-06 23:06:58,763 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 129 transitions. [2024-11-06 23:06:58,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-06 23:06:58,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:06:58,767 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:06:58,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-06 23:06:58,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:06:58,967 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:06:58,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:06:58,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1947386788, now seen corresponding path program 1 times [2024-11-06 23:06:58,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:06:58,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732576303] [2024-11-06 23:06:58,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:06:58,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:06:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:59,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-06 23:06:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:59,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-06 23:06:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:59,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 23:06:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:59,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-06 23:06:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:59,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-06 23:06:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:59,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-06 23:06:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:59,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 23:06:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:59,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-06 23:06:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:59,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-06 23:06:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:59,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-06 23:06:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:59,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-06 23:06:59,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:59,155 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-06 23:06:59,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:06:59,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732576303] [2024-11-06 23:06:59,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732576303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:06:59,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969706585] [2024-11-06 23:06:59,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:06:59,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:06:59,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:06:59,158 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 23:06:59,159 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 23:06:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:06:59,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 23:06:59,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:06:59,359 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-11-06 23:06:59,359 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 23:06:59,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969706585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:06:59,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 23:06:59,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-06 23:06:59,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415779391] [2024-11-06 23:06:59,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:06:59,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 23:06:59,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:06:59,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 23:06:59,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-06 23:06:59,360 INFO L87 Difference]: Start difference. First operand 103 states and 129 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-06 23:06:59,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:06:59,441 INFO L93 Difference]: Finished difference Result 140 states and 170 transitions. [2024-11-06 23:06:59,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 23:06:59,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 72 [2024-11-06 23:06:59,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:06:59,443 INFO L225 Difference]: With dead ends: 140 [2024-11-06 23:06:59,443 INFO L226 Difference]: Without dead ends: 96 [2024-11-06 23:06:59,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-06 23:06:59,444 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 5 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:06:59,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 79 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:06:59,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-06 23:06:59,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 93. [2024-11-06 23:06:59,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 58 states have (on average 1.1206896551724137) internal successors, (65), 61 states have internal predecessors, (65), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-06 23:06:59,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 110 transitions. [2024-11-06 23:06:59,481 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 110 transitions. Word has length 72 [2024-11-06 23:06:59,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:06:59,481 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 110 transitions. [2024-11-06 23:06:59,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-06 23:06:59,482 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 110 transitions. [2024-11-06 23:06:59,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-06 23:06:59,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:06:59,484 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:06:59,501 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 23:06:59,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-06 23:06:59,685 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:06:59,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:06:59,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1728532070, now seen corresponding path program 1 times [2024-11-06 23:06:59,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:06:59,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738743281] [2024-11-06 23:06:59,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:06:59,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:06:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:00,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-06 23:07:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:00,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-06 23:07:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:00,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 23:07:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:00,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-06 23:07:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:00,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-06 23:07:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:00,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-06 23:07:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:00,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 23:07:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:00,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-06 23:07:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:00,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-06 23:07:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:00,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-06 23:07:00,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:00,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-06 23:07:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-06 23:07:00,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:07:00,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738743281] [2024-11-06 23:07:00,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738743281] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:07:00,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123574637] [2024-11-06 23:07:00,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:07:00,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:07:00,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:07:00,103 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:07:00,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-06 23:07:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:00,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-06 23:07:00,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:07:00,325 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-06 23:07:00,325 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 23:07:00,689 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-06 23:07:00,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123574637] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 23:07:00,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 23:07:00,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-11-06 23:07:00,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373449762] [2024-11-06 23:07:00,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 23:07:00,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-06 23:07:00,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:07:00,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-06 23:07:00,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-06 23:07:00,692 INFO L87 Difference]: Start difference. First operand 93 states and 110 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 12 states have internal predecessors, (41), 8 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2024-11-06 23:07:00,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:07:00,869 INFO L93 Difference]: Finished difference Result 110 states and 125 transitions. [2024-11-06 23:07:00,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-06 23:07:00,870 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 12 states have internal predecessors, (41), 8 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) Word has length 72 [2024-11-06 23:07:00,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:07:00,871 INFO L225 Difference]: With dead ends: 110 [2024-11-06 23:07:00,871 INFO L226 Difference]: Without dead ends: 79 [2024-11-06 23:07:00,871 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 158 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-06 23:07:00,872 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 23:07:00,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 219 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 23:07:00,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-06 23:07:00,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-06 23:07:00,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 50 states have (on average 1.08) internal successors, (54), 52 states have internal predecessors, (54), 18 states have call successors, (18), 10 states have call predecessors, (18), 10 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-06 23:07:00,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2024-11-06 23:07:00,893 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 72 [2024-11-06 23:07:00,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:07:00,893 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2024-11-06 23:07:00,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 12 states have internal predecessors, (41), 8 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2024-11-06 23:07:00,894 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2024-11-06 23:07:00,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-06 23:07:00,894 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 23:07:00,894 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:07:00,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-06 23:07:01,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:07:01,099 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 23:07:01,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 23:07:01,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1193302554, now seen corresponding path program 2 times [2024-11-06 23:07:01,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 23:07:01,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814122761] [2024-11-06 23:07:01,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 23:07:01,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 23:07:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:01,293 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-06 23:07:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:01,298 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-06 23:07:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:01,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-06 23:07:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:01,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-06 23:07:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:01,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-06 23:07:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:01,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-06 23:07:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:01,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 23:07:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:01,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-06 23:07:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:01,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-06 23:07:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:01,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-06 23:07:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:01,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-06 23:07:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:01,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-06 23:07:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:01,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-06 23:07:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 23:07:01,334 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2024-11-06 23:07:01,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 23:07:01,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814122761] [2024-11-06 23:07:01,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814122761] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 23:07:01,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086236847] [2024-11-06 23:07:01,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 23:07:01,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:07:01,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 23:07:01,337 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 23:07:01,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-06 23:07:01,397 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 23:07:01,397 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 23:07:01,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-06 23:07:01,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 23:07:01,479 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2024-11-06 23:07:01,479 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 23:07:01,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086236847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 23:07:01,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 23:07:01,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2024-11-06 23:07:01,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011793240] [2024-11-06 23:07:01,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 23:07:01,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-06 23:07:01,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 23:07:01,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-06 23:07:01,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-06 23:07:01,482 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-06 23:07:01,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 23:07:01,525 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2024-11-06 23:07:01,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 23:07:01,527 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 86 [2024-11-06 23:07:01,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 23:07:01,527 INFO L225 Difference]: With dead ends: 79 [2024-11-06 23:07:01,527 INFO L226 Difference]: Without dead ends: 0 [2024-11-06 23:07:01,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-06 23:07:01,528 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 3 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 23:07:01,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 62 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 23:07:01,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-06 23:07:01,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-06 23:07:01,531 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 23:07:01,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-06 23:07:01,531 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 86 [2024-11-06 23:07:01,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 23:07:01,531 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-06 23:07:01,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-06 23:07:01,531 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-06 23:07:01,531 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-06 23:07:01,534 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-06 23:07:01,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-06 23:07:01,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 23:07:01,737 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 23:07:01,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-06 23:07:02,240 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-06 23:07:02,261 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:07:02 BoogieIcfgContainer [2024-11-06 23:07:02,261 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-06 23:07:02,261 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-06 23:07:02,261 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-06 23:07:02,262 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-06 23:07:02,262 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:06:50" (3/4) ... [2024-11-06 23:07:02,264 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-06 23:07:02,269 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-06 23:07:02,273 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2024-11-06 23:07:02,273 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-06 23:07:02,273 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-06 23:07:02,274 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-06 23:07:02,274 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-06 23:07:02,345 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-06 23:07:02,345 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-06 23:07:02,345 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-06 23:07:02,347 INFO L158 Benchmark]: Toolchain (without parser) took 12730.57ms. Allocated memory was 117.4MB in the beginning and 167.8MB in the end (delta: 50.3MB). Free memory was 91.8MB in the beginning and 107.7MB in the end (delta: -15.8MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. [2024-11-06 23:07:02,348 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory is still 81.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 23:07:02,348 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.07ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 80.4MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 23:07:02,348 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.65ms. Allocated memory is still 117.4MB. Free memory was 80.4MB in the beginning and 79.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 23:07:02,348 INFO L158 Benchmark]: Boogie Preprocessor took 47.39ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 78.1MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 23:07:02,348 INFO L158 Benchmark]: RCFGBuilder took 257.60ms. Allocated memory is still 117.4MB. Free memory was 77.9MB in the beginning and 67.4MB in the end (delta: 10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 23:07:02,348 INFO L158 Benchmark]: TraceAbstraction took 12083.40ms. Allocated memory was 117.4MB in the beginning and 167.8MB in the end (delta: 50.3MB). Free memory was 66.7MB in the beginning and 111.3MB in the end (delta: -44.6MB). Peak memory consumption was 73.1MB. Max. memory is 16.1GB. [2024-11-06 23:07:02,348 INFO L158 Benchmark]: Witness Printer took 84.19ms. Allocated memory is still 167.8MB. Free memory was 111.3MB in the beginning and 107.7MB in the end (delta: 3.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 23:07:02,351 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory is still 81.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 217.07ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 80.4MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.65ms. Allocated memory is still 117.4MB. Free memory was 80.4MB in the beginning and 79.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 47.39ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 78.1MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 257.60ms. Allocated memory is still 117.4MB. Free memory was 77.9MB in the beginning and 67.4MB in the end (delta: 10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 12083.40ms. Allocated memory was 117.4MB in the beginning and 167.8MB in the end (delta: 50.3MB). Free memory was 66.7MB in the beginning and 111.3MB in the end (delta: -44.6MB). Peak memory consumption was 73.1MB. Max. memory is 16.1GB. * Witness Printer took 84.19ms. Allocated memory is still 167.8MB. Free memory was 111.3MB in the beginning and 107.7MB in the end (delta: 3.7MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.5s, OverallIterations: 12, TraceHistogramMax: 14, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 131 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 98 mSDsluCounter, 1278 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 955 mSDsCounter, 113 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 926 IncrementalHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 113 mSolverCounterUnsat, 323 mSDtfsCounter, 926 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 817 GetRequests, 716 SyntacticMatches, 5 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=8, InterpolantAutomatonStates: 82, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 47 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 942 NumberOfCodeBlocks, 942 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 975 ConstructedInterpolants, 0 QuantifiedInterpolants, 5197 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1201 ConjunctsInSsa, 141 ConjunctsInUnsatCore, 20 InterpolantComputations, 8 PerfectInterpolantSequences, 2724/2893 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: 44]: Loop Invariant Derived loop invariant: (((((((d == 1) && (p == 1)) && (q == 1)) && (((long long) r + 1) == A)) && (B == 1)) || (((((d == 1) && (p == 1)) && (q == 0)) && (A == r)) && (B == 1))) || ((((((2 == p) && (q == 0)) && (A == r)) && (1 <= r)) && (B == 1)) && (2 == d))) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((d == 1) && (p == 1)) && (A <= 1)) && (q == 0)) && (A == r)) && (B == 1)) && (0 <= A)) || ((((((2 == p) && (q == 0)) && (A == r)) && (r == 1)) && (B == 1)) && (2 == d))) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-11-06 23:07:02,370 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