./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-2.i --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/uthash-2.0.2/uthash_SAX_test4-2.i', '-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', '6fff6eb11b5ece9f2655331435003a1af77ee5ac869f244677acc531eb435a19'] 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/uthash-2.0.2/uthash_SAX_test4-2.i -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 6fff6eb11b5ece9f2655331435003a1af77ee5ac869f244677acc531eb435a19 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 15:07:32,427 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 15:07:32,535 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 15:07:32,539 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 15:07:32,539 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 15:07:32,552 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 15:07:32,552 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 15:07:32,552 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 15:07:32,552 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 15:07:32,552 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 15:07:32,552 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 15:07:32,552 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 15:07:32,552 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 15:07:32,553 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 15:07:32,553 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 15:07:32,553 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 15:07:32,553 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 15:07:32,553 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 15:07:32,553 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 15:07:32,553 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 15:07:32,553 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 15:07:32,553 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 15:07:32,553 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 15:07:32,553 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 15:07:32,554 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 15:07:32,554 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 15:07:32,554 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 15:07:32,554 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 15:07:32,554 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 15:07:32,554 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 15:07:32,554 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 15:07:32,554 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 15:07:32,557 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 15:07:32,557 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 15:07:32,557 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 15:07:32,557 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 15:07:32,557 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 15:07:32,557 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 15:07:32,557 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 15:07:32,557 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 15:07:32,558 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 15:07:32,558 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 15:07:32,558 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 -> 6fff6eb11b5ece9f2655331435003a1af77ee5ac869f244677acc531eb435a19 [2024-11-07 15:07:32,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 15:07:32,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 15:07:32,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 15:07:32,729 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 15:07:32,729 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 15:07:32,731 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-2.i [2024-11-07 15:07:33,863 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 15:07:34,219 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 15:07:34,220 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-2.i [2024-11-07 15:07:34,239 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6ba3f3f52/2c3ecdafa07d4101ab3dfdc54689955c/FLAG2f8c19146 [2024-11-07 15:07:34,258 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6ba3f3f52/2c3ecdafa07d4101ab3dfdc54689955c [2024-11-07 15:07:34,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 15:07:34,262 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 15:07:34,263 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 15:07:34,263 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 15:07:34,266 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 15:07:34,266 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:07:34" (1/1) ... [2024-11-07 15:07:34,268 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33c0ecff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:07:34, skipping insertion in model container [2024-11-07 15:07:34,268 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:07:34" (1/1) ... [2024-11-07 15:07:34,301 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 15:07:34,524 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/uthash-2.0.2/uthash_SAX_test4-2.i[33021,33034] [2024-11-07 15:07:34,620 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 15:07:34,627 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 15:07:34,649 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/uthash-2.0.2/uthash_SAX_test4-2.i[33021,33034] [2024-11-07 15:07:34,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 15:07:34,718 INFO L204 MainTranslator]: Completed translation [2024-11-07 15:07:34,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:07:34 WrapperNode [2024-11-07 15:07:34,719 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 15:07:34,720 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 15:07:34,720 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 15:07:34,720 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 15:07:34,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:07:34" (1/1) ... [2024-11-07 15:07:34,740 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:07:34" (1/1) ... [2024-11-07 15:07:34,784 INFO L138 Inliner]: procedures = 176, calls = 386, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1752 [2024-11-07 15:07:34,784 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 15:07:34,785 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 15:07:34,785 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 15:07:34,785 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 15:07:34,791 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:07:34" (1/1) ... [2024-11-07 15:07:34,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:07:34" (1/1) ... [2024-11-07 15:07:34,798 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:07:34" (1/1) ... [2024-11-07 15:07:34,889 INFO L175 MemorySlicer]: Split 357 memory accesses to 2 slices as follows [2, 355]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 90 writes are split as follows [0, 90]. [2024-11-07 15:07:34,889 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:07:34" (1/1) ... [2024-11-07 15:07:34,890 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:07:34" (1/1) ... [2024-11-07 15:07:34,915 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:07:34" (1/1) ... [2024-11-07 15:07:34,923 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:07:34" (1/1) ... [2024-11-07 15:07:34,926 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:07:34" (1/1) ... [2024-11-07 15:07:34,928 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:07:34" (1/1) ... [2024-11-07 15:07:34,934 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 15:07:34,935 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 15:07:34,935 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 15:07:34,935 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 15:07:34,936 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:07:34" (1/1) ... [2024-11-07 15:07:34,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 15:07:34,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 15:07:34,965 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) [2024-11-07 15:07:34,973 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 [2024-11-07 15:07:34,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 15:07:34,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 15:07:34,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-07 15:07:34,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-07 15:07:34,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 15:07:34,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 15:07:34,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-07 15:07:34,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-07 15:07:34,993 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-07 15:07:34,993 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-07 15:07:34,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 15:07:34,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 15:07:34,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-07 15:07:34,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-07 15:07:34,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-07 15:07:34,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-07 15:07:34,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-07 15:07:34,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 15:07:34,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 15:07:34,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 15:07:34,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 15:07:35,201 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 15:07:35,203 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 15:07:36,631 INFO L? ?]: Removed 414 outVars from TransFormulas that were not future-live. [2024-11-07 15:07:36,631 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 15:07:36,642 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 15:07:36,642 INFO L316 CfgBuilder]: Removed 69 assume(true) statements. [2024-11-07 15:07:36,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:07:36 BoogieIcfgContainer [2024-11-07 15:07:36,642 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 15:07:36,644 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 15:07:36,644 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 15:07:36,647 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 15:07:36,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:07:34" (1/3) ... [2024-11-07 15:07:36,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3be499ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:07:36, skipping insertion in model container [2024-11-07 15:07:36,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:07:34" (2/3) ... [2024-11-07 15:07:36,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3be499ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:07:36, skipping insertion in model container [2024-11-07 15:07:36,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:07:36" (3/3) ... [2024-11-07 15:07:36,648 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test4-2.i [2024-11-07 15:07:36,657 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 15:07:36,657 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 15:07:36,696 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 15:07:36,702 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;@3ceba77c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 15:07:36,703 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-07 15:07:36,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 460 states, 440 states have (on average 1.6181818181818182) internal successors, (712), 451 states have internal predecessors, (712), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 15:07:36,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-07 15:07:36,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 15:07:36,710 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 15:07:36,711 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 15:07:36,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:07:36,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1160532636, now seen corresponding path program 1 times [2024-11-07 15:07:36,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:07:36,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707933263] [2024-11-07 15:07:36,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:07:36,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:07:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:07:36,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 15:07:36,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:07:36,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707933263] [2024-11-07 15:07:36,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707933263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 15:07:36,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 15:07:36,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 15:07:36,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023414973] [2024-11-07 15:07:36,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 15:07:36,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 15:07:36,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:07:36,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 15:07:36,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 15:07:36,840 INFO L87 Difference]: Start difference. First operand has 460 states, 440 states have (on average 1.6181818181818182) internal successors, (712), 451 states have internal predecessors, (712), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-11-07 15:07:36,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 15:07:36,937 INFO L93 Difference]: Finished difference Result 1302 states and 2121 transitions. [2024-11-07 15:07:36,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 15:07:36,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 10 [2024-11-07 15:07:36,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 15:07:36,952 INFO L225 Difference]: With dead ends: 1302 [2024-11-07 15:07:36,952 INFO L226 Difference]: Without dead ends: 805 [2024-11-07 15:07:36,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 15:07:36,962 INFO L432 NwaCegarLoop]: 750 mSDtfsCounter, 545 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 15:07:36,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 1411 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 15:07:36,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2024-11-07 15:07:37,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 422. [2024-11-07 15:07:37,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 403 states have (on average 1.4491315136476426) internal successors, (584), 413 states have internal predecessors, (584), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 15:07:37,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 616 transitions. [2024-11-07 15:07:37,063 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 616 transitions. Word has length 10 [2024-11-07 15:07:37,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 15:07:37,064 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 616 transitions. [2024-11-07 15:07:37,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-11-07 15:07:37,064 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 616 transitions. [2024-11-07 15:07:37,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-07 15:07:37,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 15:07:37,074 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 15:07:37,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 15:07:37,075 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 15:07:37,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:07:37,076 INFO L85 PathProgramCache]: Analyzing trace with hash 478627325, now seen corresponding path program 1 times [2024-11-07 15:07:37,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:07:37,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035809136] [2024-11-07 15:07:37,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:07:37,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:07:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:07:37,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 15:07:37,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:07:37,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035809136] [2024-11-07 15:07:37,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035809136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 15:07:37,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 15:07:37,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 15:07:37,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129271586] [2024-11-07 15:07:37,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 15:07:37,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 15:07:37,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:07:37,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 15:07:37,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 15:07:37,722 INFO L87 Difference]: Start difference. First operand 422 states and 616 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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) [2024-11-07 15:07:37,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 15:07:37,817 INFO L93 Difference]: Finished difference Result 844 states and 1232 transitions. [2024-11-07 15:07:37,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 15:07:37,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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 156 [2024-11-07 15:07:37,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 15:07:37,820 INFO L225 Difference]: With dead ends: 844 [2024-11-07 15:07:37,820 INFO L226 Difference]: Without dead ends: 425 [2024-11-07 15:07:37,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-07 15:07:37,822 INFO L432 NwaCegarLoop]: 587 mSDtfsCounter, 105 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 15:07:37,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1668 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 15:07:37,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2024-11-07 15:07:37,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 422. [2024-11-07 15:07:37,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 403 states have (on average 1.4317617866004964) internal successors, (577), 413 states have internal predecessors, (577), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 15:07:37,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 609 transitions. [2024-11-07 15:07:37,842 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 609 transitions. Word has length 156 [2024-11-07 15:07:37,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 15:07:37,842 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 609 transitions. [2024-11-07 15:07:37,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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) [2024-11-07 15:07:37,843 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 609 transitions. [2024-11-07 15:07:37,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-07 15:07:37,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 15:07:37,850 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 15:07:37,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 15:07:37,850 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 15:07:37,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:07:37,854 INFO L85 PathProgramCache]: Analyzing trace with hash -94439567, now seen corresponding path program 1 times [2024-11-07 15:07:37,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:07:37,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73500304] [2024-11-07 15:07:37,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:07:37,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:07:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:07:38,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 15:07:38,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:07:38,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73500304] [2024-11-07 15:07:38,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73500304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 15:07:38,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 15:07:38,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 15:07:38,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080274194] [2024-11-07 15:07:38,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 15:07:38,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 15:07:38,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:07:38,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 15:07:38,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 15:07:38,096 INFO L87 Difference]: Start difference. First operand 422 states and 609 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2024-11-07 15:07:38,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 15:07:38,161 INFO L93 Difference]: Finished difference Result 970 states and 1404 transitions. [2024-11-07 15:07:38,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 15:07:38,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 156 [2024-11-07 15:07:38,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 15:07:38,165 INFO L225 Difference]: With dead ends: 970 [2024-11-07 15:07:38,165 INFO L226 Difference]: Without dead ends: 551 [2024-11-07 15:07:38,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 15:07:38,166 INFO L432 NwaCegarLoop]: 607 mSDtfsCounter, 134 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 15:07:38,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1207 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 15:07:38,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2024-11-07 15:07:38,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2024-11-07 15:07:38,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 532 states have (on average 1.4379699248120301) internal successors, (765), 542 states have internal predecessors, (765), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 15:07:38,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 797 transitions. [2024-11-07 15:07:38,178 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 797 transitions. Word has length 156 [2024-11-07 15:07:38,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 15:07:38,179 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 797 transitions. [2024-11-07 15:07:38,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2024-11-07 15:07:38,179 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 797 transitions. [2024-11-07 15:07:38,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-07 15:07:38,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 15:07:38,180 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 15:07:38,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 15:07:38,181 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 15:07:38,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:07:38,181 INFO L85 PathProgramCache]: Analyzing trace with hash 957115648, now seen corresponding path program 1 times [2024-11-07 15:07:38,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:07:38,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441376711] [2024-11-07 15:07:38,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:07:38,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:07:38,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:07:38,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-07 15:07:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:07:38,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-07 15:07:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:07:38,556 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 15:07:38,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:07:38,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441376711] [2024-11-07 15:07:38,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441376711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 15:07:38,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 15:07:38,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 15:07:38,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208622969] [2024-11-07 15:07:38,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 15:07:38,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 15:07:38,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:07:38,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 15:07:38,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 15:07:38,559 INFO L87 Difference]: Start difference. First operand 551 states and 797 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 2 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) [2024-11-07 15:07:38,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 15:07:38,936 INFO L93 Difference]: Finished difference Result 931 states and 1346 transitions. [2024-11-07 15:07:38,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 15:07:38,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 2 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 171 [2024-11-07 15:07:38,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 15:07:38,939 INFO L225 Difference]: With dead ends: 931 [2024-11-07 15:07:38,939 INFO L226 Difference]: Without dead ends: 512 [2024-11-07 15:07:38,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-07 15:07:38,941 INFO L432 NwaCegarLoop]: 497 mSDtfsCounter, 44 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1843 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 15:07:38,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 1843 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 15:07:38,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2024-11-07 15:07:38,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 509. [2024-11-07 15:07:38,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 490 states have (on average 1.4040816326530612) internal successors, (688), 500 states have internal predecessors, (688), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 15:07:38,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 720 transitions. [2024-11-07 15:07:38,955 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 720 transitions. Word has length 171 [2024-11-07 15:07:38,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 15:07:38,957 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 720 transitions. [2024-11-07 15:07:38,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 2 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) [2024-11-07 15:07:38,957 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 720 transitions. [2024-11-07 15:07:38,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-07 15:07:38,959 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 15:07:38,959 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 15:07:38,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 15:07:38,959 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 15:07:38,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:07:38,959 INFO L85 PathProgramCache]: Analyzing trace with hash -791127020, now seen corresponding path program 1 times [2024-11-07 15:07:38,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:07:38,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547348137] [2024-11-07 15:07:38,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:07:38,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:07:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:07:39,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-07 15:07:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:07:39,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-07 15:07:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:07:39,212 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 15:07:39,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:07:39,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547348137] [2024-11-07 15:07:39,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547348137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 15:07:39,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 15:07:39,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 15:07:39,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647143728] [2024-11-07 15:07:39,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 15:07:39,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 15:07:39,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:07:39,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 15:07:39,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 15:07:39,214 INFO L87 Difference]: Start difference. First operand 509 states and 720 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 2 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) [2024-11-07 15:07:39,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 15:07:39,621 INFO L93 Difference]: Finished difference Result 883 states and 1252 transitions. [2024-11-07 15:07:39,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 15:07:39,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 2 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 171 [2024-11-07 15:07:39,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 15:07:39,624 INFO L225 Difference]: With dead ends: 883 [2024-11-07 15:07:39,624 INFO L226 Difference]: Without dead ends: 506 [2024-11-07 15:07:39,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-07 15:07:39,625 INFO L432 NwaCegarLoop]: 499 mSDtfsCounter, 17 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 15:07:39,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1850 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-07 15:07:39,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2024-11-07 15:07:39,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 503. [2024-11-07 15:07:39,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 484 states have (on average 1.4008264462809918) internal successors, (678), 494 states have internal predecessors, (678), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 15:07:39,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 710 transitions. [2024-11-07 15:07:39,638 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 710 transitions. Word has length 171 [2024-11-07 15:07:39,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 15:07:39,638 INFO L471 AbstractCegarLoop]: Abstraction has 503 states and 710 transitions. [2024-11-07 15:07:39,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 2 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) [2024-11-07 15:07:39,638 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 710 transitions. [2024-11-07 15:07:39,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-07 15:07:39,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 15:07:39,639 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 15:07:39,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 15:07:39,639 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 15:07:39,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:07:39,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1666136820, now seen corresponding path program 1 times [2024-11-07 15:07:39,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:07:39,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542775599] [2024-11-07 15:07:39,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:07:39,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:07:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:07:39,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-07 15:07:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:07:39,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-07 15:07:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:07:39,850 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 15:07:39,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:07:39,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542775599] [2024-11-07 15:07:39,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542775599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 15:07:39,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 15:07:39,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 15:07:39,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408661941] [2024-11-07 15:07:39,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 15:07:39,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 15:07:39,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:07:39,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 15:07:39,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 15:07:39,852 INFO L87 Difference]: Start difference. First operand 503 states and 710 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 2 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) [2024-11-07 15:07:40,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 15:07:40,218 INFO L93 Difference]: Finished difference Result 1017 states and 1429 transitions. [2024-11-07 15:07:40,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 15:07:40,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 2 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 171 [2024-11-07 15:07:40,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 15:07:40,223 INFO L225 Difference]: With dead ends: 1017 [2024-11-07 15:07:40,224 INFO L226 Difference]: Without dead ends: 646 [2024-11-07 15:07:40,225 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 15:07:40,225 INFO L432 NwaCegarLoop]: 514 mSDtfsCounter, 247 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 15:07:40,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 1414 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 15:07:40,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2024-11-07 15:07:40,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 643. [2024-11-07 15:07:40,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 621 states have (on average 1.3832528180354267) internal successors, (859), 631 states have internal predecessors, (859), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-07 15:07:40,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 897 transitions. [2024-11-07 15:07:40,256 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 897 transitions. Word has length 171 [2024-11-07 15:07:40,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 15:07:40,257 INFO L471 AbstractCegarLoop]: Abstraction has 643 states and 897 transitions. [2024-11-07 15:07:40,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 2 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) [2024-11-07 15:07:40,257 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 897 transitions. [2024-11-07 15:07:40,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-07 15:07:40,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 15:07:40,261 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 15:07:40,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 15:07:40,261 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 15:07:40,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:07:40,263 INFO L85 PathProgramCache]: Analyzing trace with hash -426146729, now seen corresponding path program 1 times [2024-11-07 15:07:40,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:07:40,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391073733] [2024-11-07 15:07:40,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:07:40,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:07:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:07:40,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-07 15:07:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:07:40,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-07 15:07:40,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:07:40,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-11-07 15:07:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:07:40,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-11-07 15:07:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:07:40,577 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-07 15:07:40,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:07:40,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391073733] [2024-11-07 15:07:40,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391073733] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 15:07:40,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405484350] [2024-11-07 15:07:40,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:07:40,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 15:07:40,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 15:07:40,584 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) [2024-11-07 15:07:40,586 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 [2024-11-07 15:07:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:07:41,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 1036 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-07 15:07:41,034 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 15:07:41,226 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-07 15:07:41,227 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 15:07:41,417 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-07 15:07:41,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405484350] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 15:07:41,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 15:07:41,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2024-11-07 15:07:41,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691651794] [2024-11-07 15:07:41,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 15:07:41,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 15:07:41,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:07:41,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 15:07:41,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-07 15:07:41,420 INFO L87 Difference]: Start difference. First operand 643 states and 897 transitions. Second operand has 8 states, 8 states have (on average 60.5) internal successors, (484), 7 states have internal predecessors, (484), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-07 15:07:42,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 15:07:42,708 INFO L93 Difference]: Finished difference Result 1412 states and 1988 transitions. [2024-11-07 15:07:42,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 15:07:42,709 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 60.5) internal successors, (484), 7 states have internal predecessors, (484), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 186 [2024-11-07 15:07:42,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 15:07:42,717 INFO L225 Difference]: With dead ends: 1412 [2024-11-07 15:07:42,717 INFO L226 Difference]: Without dead ends: 1381 [2024-11-07 15:07:42,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-07 15:07:42,720 INFO L432 NwaCegarLoop]: 512 mSDtfsCounter, 1786 mSDsluCounter, 2070 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1818 SdHoareTripleChecker+Valid, 2582 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-07 15:07:42,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1818 Valid, 2582 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-07 15:07:42,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2024-11-07 15:07:42,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1378. [2024-11-07 15:07:42,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1341 states have (on average 1.372110365398956) internal successors, (1840), 1351 states have internal predecessors, (1840), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 25 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-07 15:07:42,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1908 transitions. [2024-11-07 15:07:42,778 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1908 transitions. Word has length 186 [2024-11-07 15:07:42,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 15:07:42,780 INFO L471 AbstractCegarLoop]: Abstraction has 1378 states and 1908 transitions. [2024-11-07 15:07:42,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 60.5) internal successors, (484), 7 states have internal predecessors, (484), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-07 15:07:42,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1908 transitions. [2024-11-07 15:07:42,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2024-11-07 15:07:42,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 15:07:42,791 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 15:07:42,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-07 15:07:42,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 15:07:42,996 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 15:07:42,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:07:42,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1048819294, now seen corresponding path program 1 times [2024-11-07 15:07:42,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:07:42,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250807949] [2024-11-07 15:07:42,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:07:42,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 15:07:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:07:44,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-07 15:07:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:07:44,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-07 15:07:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:07:44,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-11-07 15:07:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:07:44,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-11-07 15:07:44,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:07:44,336 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 0 proven. 868 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-07 15:07:44,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 15:07:44,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250807949] [2024-11-07 15:07:44,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250807949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 15:07:44,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300690599] [2024-11-07 15:07:44,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:07:44,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 15:07:44,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 15:07:44,342 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) [2024-11-07 15:07:44,347 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 [2024-11-07 15:07:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 15:07:45,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 3112 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 15:07:45,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 15:07:45,802 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 0 proven. 868 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-07 15:07:45,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 15:07:46,415 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 0 proven. 868 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-07 15:07:46,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300690599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 15:07:46,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 15:07:46,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-11-07 15:07:46,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299068295] [2024-11-07 15:07:46,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 15:07:46,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 15:07:46,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 15:07:46,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 15:07:46,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-11-07 15:07:46,421 INFO L87 Difference]: Start difference. First operand 1378 states and 1908 transitions. Second operand has 14 states, 14 states have (on average 97.14285714285714) internal successors, (1360), 13 states have internal predecessors, (1360), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-07 15:07:47,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 15:07:47,331 INFO L93 Difference]: Finished difference Result 3428 states and 4811 transitions. [2024-11-07 15:07:47,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-07 15:07:47,332 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 97.14285714285714) internal successors, (1360), 13 states have internal predecessors, (1360), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 624 [2024-11-07 15:07:47,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 15:07:47,346 INFO L225 Difference]: With dead ends: 3428 [2024-11-07 15:07:47,346 INFO L226 Difference]: Without dead ends: 3397 [2024-11-07 15:07:47,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1261 GetRequests, 1249 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-11-07 15:07:47,347 INFO L432 NwaCegarLoop]: 555 mSDtfsCounter, 6769 mSDsluCounter, 4926 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6873 SdHoareTripleChecker+Valid, 5481 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-07 15:07:47,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6873 Valid, 5481 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-07 15:07:47,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3397 states. [2024-11-07 15:07:47,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3397 to 3394. [2024-11-07 15:07:47,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 3321 states have (on average 1.3706714844926227) internal successors, (4552), 3331 states have internal predecessors, (4552), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 61 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-07 15:07:47,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 4692 transitions. [2024-11-07 15:07:47,432 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 4692 transitions. Word has length 624 [2024-11-07 15:07:47,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 15:07:47,433 INFO L471 AbstractCegarLoop]: Abstraction has 3394 states and 4692 transitions. [2024-11-07 15:07:47,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 97.14285714285714) internal successors, (1360), 13 states have internal predecessors, (1360), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-07 15:07:47,434 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 4692 transitions. [2024-11-07 15:07:47,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1501 [2024-11-07 15:07:47,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 15:07:47,483 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 15:07:47,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-07 15:07:47,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 15:07:47,684 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 15:07:47,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 15:07:47,684 INFO L85 PathProgramCache]: Analyzing trace with hash 938049912, now seen corresponding path program 2 times [2024-11-07 15:07:47,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 15:07:47,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253822517] [2024-11-07 15:07:47,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 15:07:47,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms