./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 241cbbc1863278905c5862751ae4b8363464962676a0cc42dc0ceaf22f2782d4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 09:19:45,422 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 09:19:45,499 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 09:19:45,505 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 09:19:45,506 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 09:19:45,531 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 09:19:45,533 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 09:19:45,533 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 09:19:45,534 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 09:19:45,534 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 09:19:45,534 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 09:19:45,535 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 09:19:45,535 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 09:19:45,537 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 09:19:45,538 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 09:19:45,538 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 09:19:45,538 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 09:19:45,538 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 09:19:45,539 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 09:19:45,539 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 09:19:45,539 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 09:19:45,542 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 09:19:45,542 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 09:19:45,543 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 09:19:45,543 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 09:19:45,543 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 09:19:45,543 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 09:19:45,543 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 09:19:45,544 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 09:19:45,544 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 09:19:45,544 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 09:19:45,544 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 09:19:45,544 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:19:45,544 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 09:19:45,545 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 09:19:45,545 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 09:19:45,545 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 09:19:45,545 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 09:19:45,545 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 09:19:45,545 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 09:19:45,545 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 09:19:45,547 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 09:19:45,547 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 241cbbc1863278905c5862751ae4b8363464962676a0cc42dc0ceaf22f2782d4 [2024-10-13 09:19:45,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 09:19:45,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 09:19:45,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 09:19:45,804 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 09:19:45,805 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 09:19:45,806 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-3.i [2024-10-13 09:19:47,279 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 09:19:47,540 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 09:19:47,542 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-3.i [2024-10-13 09:19:47,562 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/543095676/15575160250743ceaafa9f8fa9c22727/FLAG2fd780815 [2024-10-13 09:19:47,845 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/543095676/15575160250743ceaafa9f8fa9c22727 [2024-10-13 09:19:47,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 09:19:47,849 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 09:19:47,851 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 09:19:47,851 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 09:19:47,858 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 09:19:47,859 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:19:47" (1/1) ... [2024-10-13 09:19:47,860 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32cf3670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:47, skipping insertion in model container [2024-10-13 09:19:47,860 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:19:47" (1/1) ... [2024-10-13 09:19:47,914 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 09:19:48,294 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-3.i[33022,33035] [2024-10-13 09:19:48,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:19:48,554 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 09:19:48,605 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-3.i[33022,33035] [2024-10-13 09:19:48,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:19:48,780 INFO L204 MainTranslator]: Completed translation [2024-10-13 09:19:48,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:48 WrapperNode [2024-10-13 09:19:48,784 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 09:19:48,785 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 09:19:48,785 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 09:19:48,786 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 09:19:48,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:48" (1/1) ... [2024-10-13 09:19:48,869 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:48" (1/1) ... [2024-10-13 09:19:49,024 INFO L138 Inliner]: procedures = 177, calls = 605, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3725 [2024-10-13 09:19:49,028 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 09:19:49,029 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 09:19:49,029 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 09:19:49,029 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 09:19:49,041 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:48" (1/1) ... [2024-10-13 09:19:49,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:48" (1/1) ... [2024-10-13 09:19:49,067 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:48" (1/1) ... [2024-10-13 09:19:49,345 INFO L175 MemorySlicer]: Split 574 memory accesses to 3 slices as follows [466, 2, 106]. 81 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2, 0]. The 102 writes are split as follows [98, 0, 4]. [2024-10-13 09:19:49,345 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:48" (1/1) ... [2024-10-13 09:19:49,345 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:48" (1/1) ... [2024-10-13 09:19:49,390 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:48" (1/1) ... [2024-10-13 09:19:49,417 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:48" (1/1) ... [2024-10-13 09:19:49,425 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:48" (1/1) ... [2024-10-13 09:19:49,435 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:48" (1/1) ... [2024-10-13 09:19:49,452 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 09:19:49,453 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 09:19:49,453 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 09:19:49,453 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 09:19:49,454 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:48" (1/1) ... [2024-10-13 09:19:49,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:19:49,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:19:49,490 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 09:19:49,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 09:19:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2024-10-13 09:19:49,542 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2024-10-13 09:19:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 09:19:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 09:19:49,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 09:19:49,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-13 09:19:49,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-13 09:19:49,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 09:19:49,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 09:19:49,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 09:19:49,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-13 09:19:49,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-13 09:19:49,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-10-13 09:19:49,543 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-13 09:19:49,543 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-13 09:19:49,543 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-10-13 09:19:49,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 09:19:49,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 09:19:49,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-13 09:19:49,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-13 09:19:49,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-13 09:19:49,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 09:19:49,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-13 09:19:49,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-13 09:19:49,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-13 09:19:49,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 09:19:49,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 09:19:49,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 09:19:49,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 09:19:49,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 09:19:49,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 09:19:49,788 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 09:19:49,794 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 09:19:52,618 INFO L? ?]: Removed 823 outVars from TransFormulas that were not future-live. [2024-10-13 09:19:52,618 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 09:19:52,669 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 09:19:52,669 INFO L314 CfgBuilder]: Removed 168 assume(true) statements. [2024-10-13 09:19:52,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:19:52 BoogieIcfgContainer [2024-10-13 09:19:52,670 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 09:19:52,671 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 09:19:52,671 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 09:19:52,674 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 09:19:52,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:19:47" (1/3) ... [2024-10-13 09:19:52,675 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a3710b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:19:52, skipping insertion in model container [2024-10-13 09:19:52,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:48" (2/3) ... [2024-10-13 09:19:52,675 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a3710b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:19:52, skipping insertion in model container [2024-10-13 09:19:52,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:19:52" (3/3) ... [2024-10-13 09:19:52,677 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test10-3.i [2024-10-13 09:19:52,692 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 09:19:52,692 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 09:19:52,763 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:19:52,768 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;@5497faa8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:19:52,769 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-13 09:19:52,776 INFO L276 IsEmpty]: Start isEmpty. Operand has 1086 states, 1067 states have (on average 1.6326148078725398) internal successors, (1742), 1072 states have internal predecessors, (1742), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-13 09:19:52,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-13 09:19:52,784 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:19:52,784 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:19:52,785 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:19:52,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:19:52,790 INFO L85 PathProgramCache]: Analyzing trace with hash 599259722, now seen corresponding path program 1 times [2024-10-13 09:19:52,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:19:52,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511383107] [2024-10-13 09:19:52,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:19:52,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:19:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:19:53,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:19:53,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:19:53,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511383107] [2024-10-13 09:19:53,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511383107] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:19:53,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:19:53,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:19:53,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445075132] [2024-10-13 09:19:53,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:19:53,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 09:19:53,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:19:53,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 09:19:53,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 09:19:53,143 INFO L87 Difference]: Start difference. First operand has 1086 states, 1067 states have (on average 1.6326148078725398) internal successors, (1742), 1072 states have internal predecessors, (1742), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:19:53,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:19:53,234 INFO L93 Difference]: Finished difference Result 2171 states and 3547 transitions. [2024-10-13 09:19:53,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 09:19:53,236 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-10-13 09:19:53,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:19:53,251 INFO L225 Difference]: With dead ends: 2171 [2024-10-13 09:19:53,251 INFO L226 Difference]: Without dead ends: 1023 [2024-10-13 09:19:53,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 09:19:53,261 INFO L432 NwaCegarLoop]: 1589 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1589 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 09:19:53,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1589 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 09:19:53,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2024-10-13 09:19:53,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1023. [2024-10-13 09:19:53,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 1005 states have (on average 1.4736318407960198) internal successors, (1481), 1010 states have internal predecessors, (1481), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-13 09:19:53,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1508 transitions. [2024-10-13 09:19:53,366 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1508 transitions. Word has length 12 [2024-10-13 09:19:53,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:19:53,366 INFO L471 AbstractCegarLoop]: Abstraction has 1023 states and 1508 transitions. [2024-10-13 09:19:53,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:19:53,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1508 transitions. [2024-10-13 09:19:53,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-13 09:19:53,371 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:19:53,371 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] [2024-10-13 09:19:53,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 09:19:53,375 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:19:53,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:19:53,376 INFO L85 PathProgramCache]: Analyzing trace with hash 911090950, now seen corresponding path program 1 times [2024-10-13 09:19:53,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:19:53,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129120367] [2024-10-13 09:19:53,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:19:53,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:19:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:19:53,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:19:53,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:19:53,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129120367] [2024-10-13 09:19:53,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129120367] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:19:53,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:19:53,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:19:53,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514577347] [2024-10-13 09:19:53,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:19:53,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 09:19:53,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:19:53,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 09:19:53,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 09:19:53,731 INFO L87 Difference]: Start difference. First operand 1023 states and 1508 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:19:53,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:19:53,931 INFO L93 Difference]: Finished difference Result 2042 states and 3012 transitions. [2024-10-13 09:19:53,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 09:19:53,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-10-13 09:19:53,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:19:53,937 INFO L225 Difference]: With dead ends: 2042 [2024-10-13 09:19:53,937 INFO L226 Difference]: Without dead ends: 1409 [2024-10-13 09:19:53,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 09:19:53,940 INFO L432 NwaCegarLoop]: 1587 mSDtfsCounter, 548 mSDsluCounter, 3024 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 4611 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 09:19:53,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 4611 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 09:19:53,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2024-10-13 09:19:53,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1025. [2024-10-13 09:19:53,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 1007 states have (on average 1.4726911618669314) internal successors, (1483), 1012 states have internal predecessors, (1483), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-13 09:19:53,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1510 transitions. [2024-10-13 09:19:53,970 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1510 transitions. Word has length 67 [2024-10-13 09:19:53,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:19:53,970 INFO L471 AbstractCegarLoop]: Abstraction has 1025 states and 1510 transitions. [2024-10-13 09:19:53,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:19:53,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1510 transitions. [2024-10-13 09:19:53,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-10-13 09:19:53,975 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:19:53,975 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-13 09:19:53,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 09:19:53,976 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:19:53,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:19:53,977 INFO L85 PathProgramCache]: Analyzing trace with hash 2132763725, now seen corresponding path program 1 times [2024-10-13 09:19:53,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:19:53,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226521421] [2024-10-13 09:19:53,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:19:53,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:19:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:19:54,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:19:54,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:19:54,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226521421] [2024-10-13 09:19:54,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226521421] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:19:54,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:19:54,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:19:54,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726383957] [2024-10-13 09:19:54,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:19:54,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 09:19:54,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:19:54,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 09:19:54,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 09:19:54,447 INFO L87 Difference]: Start difference. First operand 1025 states and 1510 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:19:54,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:19:54,598 INFO L93 Difference]: Finished difference Result 2431 states and 3576 transitions. [2024-10-13 09:19:54,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 09:19:54,598 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2024-10-13 09:19:54,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:19:54,604 INFO L225 Difference]: With dead ends: 2431 [2024-10-13 09:19:54,605 INFO L226 Difference]: Without dead ends: 1409 [2024-10-13 09:19:54,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 09:19:54,608 INFO L432 NwaCegarLoop]: 1548 mSDtfsCounter, 544 mSDsluCounter, 2985 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 4533 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 09:19:54,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 4533 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 09:19:54,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2024-10-13 09:19:54,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1028. [2024-10-13 09:19:54,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1010 states have (on average 1.4712871287128713) internal successors, (1486), 1015 states have internal predecessors, (1486), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-13 09:19:54,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1513 transitions. [2024-10-13 09:19:54,641 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1513 transitions. Word has length 144 [2024-10-13 09:19:54,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:19:54,642 INFO L471 AbstractCegarLoop]: Abstraction has 1028 states and 1513 transitions. [2024-10-13 09:19:54,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:19:54,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1513 transitions. [2024-10-13 09:19:54,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-10-13 09:19:54,646 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:19:54,647 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:19:54,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 09:19:54,647 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:19:54,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:19:54,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1900156445, now seen corresponding path program 1 times [2024-10-13 09:19:54,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:19:54,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103359698] [2024-10-13 09:19:54,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:19:54,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:19:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:19:55,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:19:55,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:19:55,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103359698] [2024-10-13 09:19:55,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103359698] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:19:55,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:19:55,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 09:19:55,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393593220] [2024-10-13 09:19:55,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:19:55,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 09:19:55,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:19:55,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 09:19:55,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 09:19:55,209 INFO L87 Difference]: Start difference. First operand 1028 states and 1513 transitions. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:19:55,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:19:55,316 INFO L93 Difference]: Finished difference Result 2008 states and 2954 transitions. [2024-10-13 09:19:55,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 09:19:55,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-10-13 09:19:55,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:19:55,322 INFO L225 Difference]: With dead ends: 2008 [2024-10-13 09:19:55,323 INFO L226 Difference]: Without dead ends: 986 [2024-10-13 09:19:55,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 09:19:55,327 INFO L432 NwaCegarLoop]: 1403 mSDtfsCounter, 30 mSDsluCounter, 2789 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 4192 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 09:19:55,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 4192 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 09:19:55,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2024-10-13 09:19:55,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 986. [2024-10-13 09:19:55,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 986 states, 968 states have (on average 1.4555785123966942) internal successors, (1409), 973 states have internal predecessors, (1409), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-13 09:19:55,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1436 transitions. [2024-10-13 09:19:55,357 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1436 transitions. Word has length 215 [2024-10-13 09:19:55,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:19:55,358 INFO L471 AbstractCegarLoop]: Abstraction has 986 states and 1436 transitions. [2024-10-13 09:19:55,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:19:55,359 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1436 transitions. [2024-10-13 09:19:55,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-10-13 09:19:55,362 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:19:55,362 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:19:55,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 09:19:55,362 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:19:55,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:19:55,363 INFO L85 PathProgramCache]: Analyzing trace with hash -648922665, now seen corresponding path program 1 times [2024-10-13 09:19:55,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:19:55,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198650094] [2024-10-13 09:19:55,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:19:55,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:19:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:19:55,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:19:55,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:19:55,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198650094] [2024-10-13 09:19:55,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198650094] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:19:55,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:19:55,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:19:55,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505400416] [2024-10-13 09:19:55,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:19:55,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:19:55,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:19:55,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:19:55,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:19:55,595 INFO L87 Difference]: Start difference. First operand 986 states and 1436 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:19:55,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:19:55,687 INFO L93 Difference]: Finished difference Result 2497 states and 3649 transitions. [2024-10-13 09:19:55,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:19:55,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-10-13 09:19:55,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:19:55,693 INFO L225 Difference]: With dead ends: 2497 [2024-10-13 09:19:55,693 INFO L226 Difference]: Without dead ends: 1517 [2024-10-13 09:19:55,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:19:55,695 INFO L432 NwaCegarLoop]: 1420 mSDtfsCounter, 716 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 2823 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 09:19:55,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 2823 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 09:19:55,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2024-10-13 09:19:55,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1358. [2024-10-13 09:19:55,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1338 states have (on average 1.4581464872944694) internal successors, (1951), 1343 states have internal predecessors, (1951), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-13 09:19:55,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 1982 transitions. [2024-10-13 09:19:55,734 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 1982 transitions. Word has length 215 [2024-10-13 09:19:55,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:19:55,734 INFO L471 AbstractCegarLoop]: Abstraction has 1358 states and 1982 transitions. [2024-10-13 09:19:55,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:19:55,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 1982 transitions. [2024-10-13 09:19:55,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-10-13 09:19:55,741 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:19:55,741 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:19:55,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 09:19:55,743 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:19:55,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:19:55,744 INFO L85 PathProgramCache]: Analyzing trace with hash -653503348, now seen corresponding path program 1 times [2024-10-13 09:19:55,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:19:55,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762344943] [2024-10-13 09:19:55,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:19:55,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:19:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:19:56,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-13 09:19:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:19:56,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-13 09:19:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:19:56,236 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 09:19:56,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:19:56,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762344943] [2024-10-13 09:19:56,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762344943] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:19:56,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:19:56,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:19:56,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134242989] [2024-10-13 09:19:56,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:19:56,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 09:19:56,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:19:56,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 09:19:56,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 09:19:56,241 INFO L87 Difference]: Start difference. First operand 1358 states and 1982 transitions. Second operand has 5 states, 5 states have (on average 44.0) internal successors, (220), 4 states have internal predecessors, (220), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 09:19:56,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:19:56,605 INFO L93 Difference]: Finished difference Result 2585 states and 3784 transitions. [2024-10-13 09:19:56,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:19:56,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 4 states have internal predecessors, (220), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 228 [2024-10-13 09:19:56,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:19:56,611 INFO L225 Difference]: With dead ends: 2585 [2024-10-13 09:19:56,612 INFO L226 Difference]: Without dead ends: 1318 [2024-10-13 09:19:56,614 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 [2024-10-13 09:19:56,615 INFO L432 NwaCegarLoop]: 1297 mSDtfsCounter, 51 mSDsluCounter, 3741 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 5038 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 09:19:56,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 5038 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 09:19:56,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2024-10-13 09:19:56,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1316. [2024-10-13 09:19:56,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 1296 states have (on average 1.4459876543209877) internal successors, (1874), 1301 states have internal predecessors, (1874), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-13 09:19:56,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1905 transitions. [2024-10-13 09:19:56,642 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1905 transitions. Word has length 228 [2024-10-13 09:19:56,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:19:56,643 INFO L471 AbstractCegarLoop]: Abstraction has 1316 states and 1905 transitions. [2024-10-13 09:19:56,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 4 states have internal predecessors, (220), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 09:19:56,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1905 transitions. [2024-10-13 09:19:56,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-10-13 09:19:56,645 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:19:56,645 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:19:56,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 09:19:56,646 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:19:56,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:19:56,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1029310312, now seen corresponding path program 1 times [2024-10-13 09:19:56,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:19:56,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700622111] [2024-10-13 09:19:56,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:19:56,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:19:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:19:56,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-13 09:19:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:19:56,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-13 09:19:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:19:56,912 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 09:19:56,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:19:56,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700622111] [2024-10-13 09:19:56,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700622111] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:19:56,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:19:56,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 09:19:56,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284824587] [2024-10-13 09:19:56,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:19:56,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 09:19:56,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:19:56,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 09:19:56,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 09:19:56,915 INFO L87 Difference]: Start difference. First operand 1316 states and 1905 transitions. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 09:19:57,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:19:57,236 INFO L93 Difference]: Finished difference Result 2543 states and 3696 transitions. [2024-10-13 09:19:57,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 09:19:57,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 228 [2024-10-13 09:19:57,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:19:57,242 INFO L225 Difference]: With dead ends: 2543 [2024-10-13 09:19:57,242 INFO L226 Difference]: Without dead ends: 1318 [2024-10-13 09:19:57,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 09:19:57,246 INFO L432 NwaCegarLoop]: 1310 mSDtfsCounter, 22 mSDsluCounter, 2472 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3782 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 09:19:57,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3782 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 09:19:57,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2024-10-13 09:19:57,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1316. [2024-10-13 09:19:57,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 1296 states have (on average 1.4436728395061729) internal successors, (1871), 1301 states have internal predecessors, (1871), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-13 09:19:57,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1902 transitions. [2024-10-13 09:19:57,268 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1902 transitions. Word has length 228 [2024-10-13 09:19:57,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:19:57,269 INFO L471 AbstractCegarLoop]: Abstraction has 1316 states and 1902 transitions. [2024-10-13 09:19:57,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 09:19:57,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1902 transitions. [2024-10-13 09:19:57,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-10-13 09:19:57,271 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:19:57,271 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:19:57,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 09:19:57,272 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:19:57,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:19:57,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1538512022, now seen corresponding path program 1 times [2024-10-13 09:19:57,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:19:57,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152790366] [2024-10-13 09:19:57,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:19:57,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:19:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:19:57,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-13 09:19:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:19:57,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-13 09:19:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:19:57,474 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 09:19:57,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:19:57,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152790366] [2024-10-13 09:19:57,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152790366] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:19:57,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:19:57,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 09:19:57,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875624691] [2024-10-13 09:19:57,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:19:57,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 09:19:57,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:19:57,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 09:19:57,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 09:19:57,476 INFO L87 Difference]: Start difference. First operand 1316 states and 1902 transitions. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 09:19:57,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:19:57,789 INFO L93 Difference]: Finished difference Result 3114 states and 4524 transitions. [2024-10-13 09:19:57,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 09:19:57,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 228 [2024-10-13 09:19:57,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:19:57,796 INFO L225 Difference]: With dead ends: 3114 [2024-10-13 09:19:57,796 INFO L226 Difference]: Without dead ends: 1889 [2024-10-13 09:19:57,798 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 09:19:57,798 INFO L432 NwaCegarLoop]: 1314 mSDtfsCounter, 618 mSDsluCounter, 2482 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 3796 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 09:19:57,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 3796 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 09:19:57,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2024-10-13 09:19:57,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1882. [2024-10-13 09:19:57,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1856 states have (on average 1.4455818965517242) internal successors, (2683), 1861 states have internal predecessors, (2683), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-13 09:19:57,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 2726 transitions. [2024-10-13 09:19:57,830 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 2726 transitions. Word has length 228 [2024-10-13 09:19:57,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:19:57,831 INFO L471 AbstractCegarLoop]: Abstraction has 1882 states and 2726 transitions. [2024-10-13 09:19:57,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 09:19:57,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 2726 transitions. [2024-10-13 09:19:57,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-10-13 09:19:57,833 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:19:57,833 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:19:57,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 09:19:57,833 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:19:57,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:19:57,834 INFO L85 PathProgramCache]: Analyzing trace with hash -436030162, now seen corresponding path program 1 times [2024-10-13 09:19:57,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:19:57,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699354270] [2024-10-13 09:19:57,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:19:57,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:19:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:19:58,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-13 09:19:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:19:58,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-13 09:19:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:19:58,152 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-13 09:19:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:19:58,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-13 09:19:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:19:58,159 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-13 09:19:58,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:19:58,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699354270] [2024-10-13 09:19:58,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699354270] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:19:58,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:19:58,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 09:19:58,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177406980] [2024-10-13 09:19:58,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:19:58,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:19:58,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:19:58,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:19:58,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:19:58,161 INFO L87 Difference]: Start difference. First operand 1882 states and 2726 transitions. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 5 states have internal predecessors, (225), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-13 09:19:58,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:19:58,788 INFO L93 Difference]: Finished difference Result 4067 states and 5941 transitions. [2024-10-13 09:19:58,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:19:58,789 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 5 states have internal predecessors, (225), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 241 [2024-10-13 09:19:58,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:19:58,797 INFO L225 Difference]: With dead ends: 4067 [2024-10-13 09:19:58,799 INFO L226 Difference]: Without dead ends: 2422 [2024-10-13 09:19:58,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-13 09:19:58,801 INFO L432 NwaCegarLoop]: 1354 mSDtfsCounter, 3558 mSDsluCounter, 2766 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3569 SdHoareTripleChecker+Valid, 4120 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 09:19:58,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3569 Valid, 4120 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 09:19:58,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2422 states. [2024-10-13 09:19:58,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2422 to 1453. [2024-10-13 09:19:58,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 1432 states have (on average 1.4301675977653632) internal successors, (2048), 1437 states have internal predecessors, (2048), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-13 09:19:58,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 2081 transitions. [2024-10-13 09:19:58,834 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 2081 transitions. Word has length 241 [2024-10-13 09:19:58,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:19:58,835 INFO L471 AbstractCegarLoop]: Abstraction has 1453 states and 2081 transitions. [2024-10-13 09:19:58,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 5 states have internal predecessors, (225), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-13 09:19:58,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 2081 transitions. [2024-10-13 09:19:58,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-10-13 09:19:58,837 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:19:58,837 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:19:58,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 09:19:58,838 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:19:58,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:19:58,838 INFO L85 PathProgramCache]: Analyzing trace with hash -467372862, now seen corresponding path program 1 times [2024-10-13 09:19:58,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:19:58,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982060666] [2024-10-13 09:19:58,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:19:58,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:19:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:19:59,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-13 09:19:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:19:59,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-13 09:19:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:19:59,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-13 09:19:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:19:59,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-13 09:19:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:19:59,235 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-13 09:19:59,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:19:59,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982060666] [2024-10-13 09:19:59,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982060666] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:19:59,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:19:59,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:19:59,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95577149] [2024-10-13 09:19:59,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:19:59,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 09:19:59,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:19:59,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 09:19:59,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 09:19:59,238 INFO L87 Difference]: Start difference. First operand 1453 states and 2081 transitions. Second operand has 5 states, 5 states have (on average 46.8) internal successors, (234), 4 states have internal predecessors, (234), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-13 09:20:00,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:20:00,170 INFO L93 Difference]: Finished difference Result 2329 states and 3389 transitions. [2024-10-13 09:20:00,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:20:00,170 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 46.8) internal successors, (234), 4 states have internal predecessors, (234), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 251 [2024-10-13 09:20:00,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:20:00,178 INFO L225 Difference]: With dead ends: 2329 [2024-10-13 09:20:00,178 INFO L226 Difference]: Without dead ends: 1413 [2024-10-13 09:20:00,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:20:00,181 INFO L432 NwaCegarLoop]: 1211 mSDtfsCounter, 51 mSDsluCounter, 3484 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4695 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-13 09:20:00,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4695 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-13 09:20:00,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2024-10-13 09:20:00,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1411. [2024-10-13 09:20:00,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1390 states have (on average 1.4179856115107914) internal successors, (1971), 1395 states have internal predecessors, (1971), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-13 09:20:00,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 2004 transitions. [2024-10-13 09:20:00,237 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 2004 transitions. Word has length 251 [2024-10-13 09:20:00,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:20:00,237 INFO L471 AbstractCegarLoop]: Abstraction has 1411 states and 2004 transitions. [2024-10-13 09:20:00,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.8) internal successors, (234), 4 states have internal predecessors, (234), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-13 09:20:00,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 2004 transitions. [2024-10-13 09:20:00,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-10-13 09:20:00,241 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:20:00,241 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:20:00,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 09:20:00,242 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:20:00,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:20:00,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1245705356, now seen corresponding path program 1 times [2024-10-13 09:20:00,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:20:00,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423220397] [2024-10-13 09:20:00,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:20:00,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:20:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:00,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-13 09:20:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:00,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-13 09:20:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:00,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-13 09:20:00,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:00,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-13 09:20:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:00,607 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-13 09:20:00,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:20:00,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423220397] [2024-10-13 09:20:00,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423220397] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:20:00,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:20:00,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 09:20:00,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47355626] [2024-10-13 09:20:00,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:20:00,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 09:20:00,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:20:00,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 09:20:00,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 09:20:00,611 INFO L87 Difference]: Start difference. First operand 1411 states and 2004 transitions. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-13 09:20:01,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:20:01,068 INFO L93 Difference]: Finished difference Result 2262 states and 3272 transitions. [2024-10-13 09:20:01,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 09:20:01,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 251 [2024-10-13 09:20:01,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:20:01,074 INFO L225 Difference]: With dead ends: 2262 [2024-10-13 09:20:01,074 INFO L226 Difference]: Without dead ends: 1413 [2024-10-13 09:20:01,075 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 09:20:01,076 INFO L432 NwaCegarLoop]: 1225 mSDtfsCounter, 22 mSDsluCounter, 2299 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3524 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-13 09:20:01,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3524 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-13 09:20:01,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2024-10-13 09:20:01,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1411. [2024-10-13 09:20:01,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1390 states have (on average 1.4158273381294963) internal successors, (1968), 1395 states have internal predecessors, (1968), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-13 09:20:01,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 2001 transitions. [2024-10-13 09:20:01,105 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 2001 transitions. Word has length 251 [2024-10-13 09:20:01,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:20:01,106 INFO L471 AbstractCegarLoop]: Abstraction has 1411 states and 2001 transitions. [2024-10-13 09:20:01,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-13 09:20:01,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 2001 transitions. [2024-10-13 09:20:01,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-10-13 09:20:01,109 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:20:01,109 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:20:01,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 09:20:01,109 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:20:01,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:20:01,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1591180152, now seen corresponding path program 1 times [2024-10-13 09:20:01,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:20:01,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369133798] [2024-10-13 09:20:01,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:20:01,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:20:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:01,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-13 09:20:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:01,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-13 09:20:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:01,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-13 09:20:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:01,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-13 09:20:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:01,976 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-13 09:20:01,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:20:01,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369133798] [2024-10-13 09:20:01,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369133798] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:20:01,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349638139] [2024-10-13 09:20:01,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:20:01,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:20:01,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:20:01,980 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:20:01,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 09:20:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:02,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 09:20:02,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:20:02,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 09:20:02,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 09:20:03,005 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-13 09:20:03,005 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:20:03,304 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-13 09:20:03,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349638139] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:20:03,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:20:03,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2024-10-13 09:20:03,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547974455] [2024-10-13 09:20:03,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:20:03,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 09:20:03,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:20:03,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 09:20:03,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-10-13 09:20:03,308 INFO L87 Difference]: Start difference. First operand 1411 states and 2001 transitions. Second operand has 13 states, 13 states have (on average 42.92307692307692) internal successors, (558), 12 states have internal predecessors, (558), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-13 09:20:04,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:20:04,226 INFO L93 Difference]: Finished difference Result 3237 states and 4580 transitions. [2024-10-13 09:20:04,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 09:20:04,227 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 42.92307692307692) internal successors, (558), 12 states have internal predecessors, (558), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 251 [2024-10-13 09:20:04,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:20:04,234 INFO L225 Difference]: With dead ends: 3237 [2024-10-13 09:20:04,234 INFO L226 Difference]: Without dead ends: 2359 [2024-10-13 09:20:04,236 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 497 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-10-13 09:20:04,237 INFO L432 NwaCegarLoop]: 1544 mSDtfsCounter, 2837 mSDsluCounter, 10131 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2868 SdHoareTripleChecker+Valid, 11675 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-13 09:20:04,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2868 Valid, 11675 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-13 09:20:04,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2024-10-13 09:20:04,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 2064. [2024-10-13 09:20:04,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2064 states, 2031 states have (on average 1.3870014771048744) internal successors, (2817), 2036 states have internal predecessors, (2817), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-10-13 09:20:04,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2064 states to 2064 states and 2872 transitions. [2024-10-13 09:20:04,277 INFO L78 Accepts]: Start accepts. Automaton has 2064 states and 2872 transitions. Word has length 251 [2024-10-13 09:20:04,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:20:04,278 INFO L471 AbstractCegarLoop]: Abstraction has 2064 states and 2872 transitions. [2024-10-13 09:20:04,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 42.92307692307692) internal successors, (558), 12 states have internal predecessors, (558), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-13 09:20:04,278 INFO L276 IsEmpty]: Start isEmpty. Operand 2064 states and 2872 transitions. [2024-10-13 09:20:04,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2024-10-13 09:20:04,283 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:20:04,283 INFO L215 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:20:04,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 09:20:04,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-13 09:20:04,488 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:20:04,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:20:04,489 INFO L85 PathProgramCache]: Analyzing trace with hash 337668249, now seen corresponding path program 1 times [2024-10-13 09:20:04,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:20:04,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91007691] [2024-10-13 09:20:04,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:20:04,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:20:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:06,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-13 09:20:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:06,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-13 09:20:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:06,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-13 09:20:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:06,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-13 09:20:06,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:06,665 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 234 proven. 5 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2024-10-13 09:20:06,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:20:06,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91007691] [2024-10-13 09:20:06,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91007691] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:20:06,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628307246] [2024-10-13 09:20:06,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:20:06,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:20:06,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:20:06,668 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:20:06,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 09:20:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:07,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 2403 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 09:20:07,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:20:07,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 09:20:07,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 09:20:07,828 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 234 proven. 5 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2024-10-13 09:20:07,828 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:20:08,053 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 234 proven. 5 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2024-10-13 09:20:08,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628307246] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:20:08,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:20:08,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2024-10-13 09:20:08,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965367585] [2024-10-13 09:20:08,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:20:08,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 09:20:08,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:20:08,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 09:20:08,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-13 09:20:08,057 INFO L87 Difference]: Start difference. First operand 2064 states and 2872 transitions. Second operand has 14 states, 14 states have (on average 46.07142857142857) internal successors, (645), 13 states have internal predecessors, (645), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-13 09:20:08,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:20:08,890 INFO L93 Difference]: Finished difference Result 3977 states and 5565 transitions. [2024-10-13 09:20:08,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 09:20:08,891 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 46.07142857142857) internal successors, (645), 13 states have internal predecessors, (645), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 482 [2024-10-13 09:20:08,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:20:08,901 INFO L225 Difference]: With dead ends: 3977 [2024-10-13 09:20:08,902 INFO L226 Difference]: Without dead ends: 2359 [2024-10-13 09:20:08,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 985 GetRequests, 960 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2024-10-13 09:20:08,906 INFO L432 NwaCegarLoop]: 1570 mSDtfsCounter, 2634 mSDsluCounter, 9142 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2664 SdHoareTripleChecker+Valid, 10712 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 09:20:08,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2664 Valid, 10712 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 09:20:08,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2024-10-13 09:20:08,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 2067. [2024-10-13 09:20:08,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2067 states, 2034 states have (on average 1.3854473942969519) internal successors, (2818), 2039 states have internal predecessors, (2818), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-10-13 09:20:08,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 2873 transitions. [2024-10-13 09:20:08,974 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 2873 transitions. Word has length 482 [2024-10-13 09:20:08,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:20:08,974 INFO L471 AbstractCegarLoop]: Abstraction has 2067 states and 2873 transitions. [2024-10-13 09:20:08,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 46.07142857142857) internal successors, (645), 13 states have internal predecessors, (645), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-13 09:20:08,975 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 2873 transitions. [2024-10-13 09:20:08,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2024-10-13 09:20:08,988 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:20:08,989 INFO L215 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:20:09,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 09:20:09,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-13 09:20:09,194 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:20:09,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:20:09,196 INFO L85 PathProgramCache]: Analyzing trace with hash -530159031, now seen corresponding path program 1 times [2024-10-13 09:20:09,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:20:09,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270714973] [2024-10-13 09:20:09,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:20:09,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:20:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:14,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-13 09:20:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:14,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-13 09:20:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:14,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-13 09:20:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:14,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-13 09:20:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:14,202 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-13 09:20:14,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:20:14,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270714973] [2024-10-13 09:20:14,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270714973] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:20:14,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024617050] [2024-10-13 09:20:14,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:20:14,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:20:14,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:20:14,205 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:20:14,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 09:20:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:15,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 3384 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-13 09:20:15,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:20:15,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 09:20:15,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 09:20:15,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 09:20:15,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 09:20:16,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 09:20:16,133 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-13 09:20:16,134 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:20:16,913 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-13 09:20:16,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024617050] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:20:16,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:20:16,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 25 [2024-10-13 09:20:16,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118406769] [2024-10-13 09:20:16,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:20:16,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-13 09:20:16,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:20:16,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-13 09:20:16,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=416, Unknown=0, NotChecked=0, Total=600 [2024-10-13 09:20:16,918 INFO L87 Difference]: Start difference. First operand 2067 states and 2873 transitions. Second operand has 25 states, 25 states have (on average 75.6) internal successors, (1890), 24 states have internal predecessors, (1890), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-13 09:20:18,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:20:18,928 INFO L93 Difference]: Finished difference Result 4995 states and 6956 transitions. [2024-10-13 09:20:18,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-13 09:20:18,930 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 75.6) internal successors, (1890), 24 states have internal predecessors, (1890), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 695 [2024-10-13 09:20:18,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:20:18,943 INFO L225 Difference]: With dead ends: 4995 [2024-10-13 09:20:18,944 INFO L226 Difference]: Without dead ends: 4117 [2024-10-13 09:20:18,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1422 GetRequests, 1382 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=324, Invalid=866, Unknown=0, NotChecked=0, Total=1190 [2024-10-13 09:20:18,953 INFO L432 NwaCegarLoop]: 2678 mSDtfsCounter, 10698 mSDsluCounter, 21526 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10777 SdHoareTripleChecker+Valid, 24204 SdHoareTripleChecker+Invalid, 1496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-13 09:20:18,953 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10777 Valid, 24204 Invalid, 1496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1361 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-13 09:20:18,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4117 states. [2024-10-13 09:20:19,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4117 to 3822. [2024-10-13 09:20:19,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3822 states, 3765 states have (on average 1.3593625498007968) internal successors, (5118), 3770 states have internal predecessors, (5118), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2024-10-13 09:20:19,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3822 states to 3822 states and 5221 transitions. [2024-10-13 09:20:19,052 INFO L78 Accepts]: Start accepts. Automaton has 3822 states and 5221 transitions. Word has length 695 [2024-10-13 09:20:19,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:20:19,053 INFO L471 AbstractCegarLoop]: Abstraction has 3822 states and 5221 transitions. [2024-10-13 09:20:19,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 75.6) internal successors, (1890), 24 states have internal predecessors, (1890), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-13 09:20:19,054 INFO L276 IsEmpty]: Start isEmpty. Operand 3822 states and 5221 transitions. [2024-10-13 09:20:19,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1158 [2024-10-13 09:20:19,068 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:20:19,068 INFO L215 NwaCegarLoop]: trace histogram [11, 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, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:20:19,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 09:20:19,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:20:19,273 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:20:19,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:20:19,275 INFO L85 PathProgramCache]: Analyzing trace with hash 989558121, now seen corresponding path program 1 times [2024-10-13 09:20:19,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:20:19,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223371203] [2024-10-13 09:20:19,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:20:19,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:20:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:27,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-13 09:20:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:27,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-13 09:20:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:27,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-13 09:20:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:27,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-13 09:20:27,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:27,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3905 backedges. 1851 proven. 896 refuted. 0 times theorem prover too weak. 1158 trivial. 0 not checked. [2024-10-13 09:20:27,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:20:27,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223371203] [2024-10-13 09:20:27,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223371203] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:20:27,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548941672] [2024-10-13 09:20:27,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:20:27,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:20:27,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:20:27,343 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:20:27,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 09:20:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:29,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 5664 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-13 09:20:29,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:20:29,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 09:20:29,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 09:20:29,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 09:20:29,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 09:20:29,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 09:20:29,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3905 backedges. 1851 proven. 896 refuted. 0 times theorem prover too weak. 1158 trivial. 0 not checked. [2024-10-13 09:20:29,768 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:20:30,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3905 backedges. 1851 proven. 896 refuted. 0 times theorem prover too weak. 1158 trivial. 0 not checked. [2024-10-13 09:20:30,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548941672] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:20:30,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:20:30,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 8] total 26 [2024-10-13 09:20:30,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425066647] [2024-10-13 09:20:30,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:20:30,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-13 09:20:30,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:20:30,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-13 09:20:30,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=462, Unknown=0, NotChecked=0, Total=650 [2024-10-13 09:20:30,612 INFO L87 Difference]: Start difference. First operand 3822 states and 5221 transitions. Second operand has 26 states, 26 states have (on average 76.03846153846153) internal successors, (1977), 25 states have internal predecessors, (1977), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-13 09:20:32,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:20:32,896 INFO L93 Difference]: Finished difference Result 6614 states and 9114 transitions. [2024-10-13 09:20:32,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-13 09:20:32,897 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 76.03846153846153) internal successors, (1977), 25 states have internal predecessors, (1977), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 1157 [2024-10-13 09:20:32,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:20:32,913 INFO L225 Difference]: With dead ends: 6614 [2024-10-13 09:20:32,914 INFO L226 Difference]: Without dead ends: 4117 [2024-10-13 09:20:32,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2353 GetRequests, 2307 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=375, Invalid=1265, Unknown=0, NotChecked=0, Total=1640 [2024-10-13 09:20:32,926 INFO L432 NwaCegarLoop]: 2701 mSDtfsCounter, 5574 mSDsluCounter, 26844 mSDsCounter, 0 mSdLazyCounter, 1785 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5652 SdHoareTripleChecker+Valid, 29545 SdHoareTripleChecker+Invalid, 1893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-13 09:20:32,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5652 Valid, 29545 Invalid, 1893 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [108 Valid, 1785 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-13 09:20:32,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4117 states. [2024-10-13 09:20:33,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4117 to 3825. [2024-10-13 09:20:33,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3825 states, 3768 states have (on average 1.3577494692144374) internal successors, (5116), 3773 states have internal predecessors, (5116), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2024-10-13 09:20:33,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3825 states to 3825 states and 5219 transitions. [2024-10-13 09:20:33,082 INFO L78 Accepts]: Start accepts. Automaton has 3825 states and 5219 transitions. Word has length 1157 [2024-10-13 09:20:33,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:20:33,083 INFO L471 AbstractCegarLoop]: Abstraction has 3825 states and 5219 transitions. [2024-10-13 09:20:33,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 76.03846153846153) internal successors, (1977), 25 states have internal predecessors, (1977), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-13 09:20:33,084 INFO L276 IsEmpty]: Start isEmpty. Operand 3825 states and 5219 transitions. [2024-10-13 09:20:33,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1584 [2024-10-13 09:20:33,117 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:20:33,118 INFO L215 NwaCegarLoop]: trace histogram [11, 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, 10, 9, 9, 9, 9, 9, 9, 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] [2024-10-13 09:20:33,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 09:20:33,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-13 09:20:33,320 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:20:33,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:20:33,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1540419221, now seen corresponding path program 2 times [2024-10-13 09:20:33,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:20:33,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231867904] [2024-10-13 09:20:33,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:20:33,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:20:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:38,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-13 09:20:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:38,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-13 09:20:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:38,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-13 09:20:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:38,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-13 09:20:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:38,251 INFO L134 CoverageAnalysis]: Checked inductivity of 6662 backedges. 1320 proven. 1 refuted. 0 times theorem prover too weak. 5341 trivial. 0 not checked. [2024-10-13 09:20:38,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:20:38,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231867904] [2024-10-13 09:20:38,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231867904] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:20:38,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441831308] [2024-10-13 09:20:38,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 09:20:38,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:20:38,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:20:38,254 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:20:38,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 09:20:39,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 09:20:39,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:20:39,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-13 09:20:39,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:20:39,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 09:20:40,073 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 09:20:40,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 58 [2024-10-13 09:20:40,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6662 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6662 trivial. 0 not checked. [2024-10-13 09:20:40,368 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:20:40,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441831308] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:20:40,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:20:40,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2024-10-13 09:20:40,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103735314] [2024-10-13 09:20:40,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:20:40,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:20:40,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:20:40,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:20:40,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2024-10-13 09:20:40,375 INFO L87 Difference]: Start difference. First operand 3825 states and 5219 transitions. Second operand has 10 states, 10 states have (on average 24.0) internal successors, (240), 10 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-13 09:20:41,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:20:41,252 INFO L93 Difference]: Finished difference Result 4670 states and 6474 transitions. [2024-10-13 09:20:41,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 09:20:41,252 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.0) internal successors, (240), 10 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1583 [2024-10-13 09:20:41,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:20:41,262 INFO L225 Difference]: With dead ends: 4670 [2024-10-13 09:20:41,263 INFO L226 Difference]: Without dead ends: 3831 [2024-10-13 09:20:41,265 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1605 GetRequests, 1584 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2024-10-13 09:20:41,265 INFO L432 NwaCegarLoop]: 1230 mSDtfsCounter, 402 mSDsluCounter, 6525 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 7755 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 09:20:41,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 7755 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 09:20:41,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3831 states. [2024-10-13 09:20:41,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3831 to 3828. [2024-10-13 09:20:41,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3828 states, 3771 states have (on average 1.3574648634314506) internal successors, (5119), 3776 states have internal predecessors, (5119), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2024-10-13 09:20:41,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3828 states to 3828 states and 5222 transitions. [2024-10-13 09:20:41,344 INFO L78 Accepts]: Start accepts. Automaton has 3828 states and 5222 transitions. Word has length 1583 [2024-10-13 09:20:41,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:20:41,346 INFO L471 AbstractCegarLoop]: Abstraction has 3828 states and 5222 transitions. [2024-10-13 09:20:41,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.0) internal successors, (240), 10 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-13 09:20:41,346 INFO L276 IsEmpty]: Start isEmpty. Operand 3828 states and 5222 transitions. [2024-10-13 09:20:41,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1584 [2024-10-13 09:20:41,361 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:20:41,361 INFO L215 NwaCegarLoop]: trace histogram [11, 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, 10, 9, 9, 9, 9, 9, 9, 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] [2024-10-13 09:20:41,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 09:20:41,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-13 09:20:41,563 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:20:41,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:20:41,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1962945693, now seen corresponding path program 1 times [2024-10-13 09:20:41,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:20:41,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161273832] [2024-10-13 09:20:41,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:20:41,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:20:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:43,476 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-13 09:20:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:43,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-13 09:20:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:43,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-13 09:20:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:43,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-13 09:20:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:43,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6662 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6662 trivial. 0 not checked. [2024-10-13 09:20:43,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:20:43,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161273832] [2024-10-13 09:20:43,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161273832] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:20:43,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:20:43,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:20:43,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462701223] [2024-10-13 09:20:43,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:20:43,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 09:20:43,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:20:43,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 09:20:43,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 09:20:43,487 INFO L87 Difference]: Start difference. First operand 3828 states and 5222 transitions. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 4 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-13 09:20:44,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:20:44,121 INFO L93 Difference]: Finished difference Result 4674 states and 6519 transitions. [2024-10-13 09:20:44,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:20:44,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 4 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1583 [2024-10-13 09:20:44,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:20:44,131 INFO L225 Difference]: With dead ends: 4674 [2024-10-13 09:20:44,131 INFO L226 Difference]: Without dead ends: 3823 [2024-10-13 09:20:44,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:20:44,133 INFO L432 NwaCegarLoop]: 1210 mSDtfsCounter, 30 mSDsluCounter, 3480 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 4690 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 09:20:44,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 4690 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 09:20:44,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3823 states. [2024-10-13 09:20:44,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3823 to 3819. [2024-10-13 09:20:44,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3819 states, 3762 states have (on average 1.3577884104199893) internal successors, (5108), 3767 states have internal predecessors, (5108), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2024-10-13 09:20:44,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3819 states to 3819 states and 5211 transitions. [2024-10-13 09:20:44,311 INFO L78 Accepts]: Start accepts. Automaton has 3819 states and 5211 transitions. Word has length 1583 [2024-10-13 09:20:44,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:20:44,312 INFO L471 AbstractCegarLoop]: Abstraction has 3819 states and 5211 transitions. [2024-10-13 09:20:44,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 4 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-13 09:20:44,313 INFO L276 IsEmpty]: Start isEmpty. Operand 3819 states and 5211 transitions. [2024-10-13 09:20:44,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1585 [2024-10-13 09:20:44,333 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:20:44,333 INFO L215 NwaCegarLoop]: trace histogram [11, 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, 10, 9, 9, 9, 9, 9, 9, 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] [2024-10-13 09:20:44,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-13 09:20:44,334 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:20:44,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:20:44,334 INFO L85 PathProgramCache]: Analyzing trace with hash 771333341, now seen corresponding path program 1 times [2024-10-13 09:20:44,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:20:44,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942327859] [2024-10-13 09:20:44,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:20:44,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:20:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:48,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-13 09:20:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:48,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-13 09:20:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:48,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-13 09:20:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:48,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-13 09:20:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:48,762 INFO L134 CoverageAnalysis]: Checked inductivity of 6662 backedges. 1320 proven. 1 refuted. 0 times theorem prover too weak. 5341 trivial. 0 not checked. [2024-10-13 09:20:48,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:20:48,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942327859] [2024-10-13 09:20:48,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942327859] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:20:48,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616868820] [2024-10-13 09:20:48,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:20:48,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:20:48,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:20:48,765 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:20:48,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 09:20:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:20:52,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 7627 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-13 09:20:52,200 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:20:52,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 09:20:52,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 09:20:52,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 09:20:52,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 09:20:53,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 09:20:53,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 09:20:53,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 09:20:53,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 09:20:53,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 09:20:53,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 09:20:54,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-13 09:20:54,174 INFO L134 CoverageAnalysis]: Checked inductivity of 6662 backedges. 0 proven. 6644 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-13 09:20:54,174 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:20:55,888 INFO L134 CoverageAnalysis]: Checked inductivity of 6662 backedges. 0 proven. 6644 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-13 09:20:55,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616868820] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:20:55,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:20:55,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 14] total 32 [2024-10-13 09:20:55,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671163136] [2024-10-13 09:20:55,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:20:55,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-13 09:20:55,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:20:55,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-13 09:20:55,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=709, Unknown=0, NotChecked=0, Total=992 [2024-10-13 09:20:55,895 INFO L87 Difference]: Start difference. First operand 3819 states and 5211 transitions. Second operand has 32 states, 32 states have (on average 105.53125) internal successors, (3377), 31 states have internal predecessors, (3377), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-13 09:21:01,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:21:01,184 INFO L93 Difference]: Finished difference Result 7278 states and 10024 transitions. [2024-10-13 09:21:01,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-10-13 09:21:01,186 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 105.53125) internal successors, (3377), 31 states have internal predecessors, (3377), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 1584 [2024-10-13 09:21:01,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:21:01,204 INFO L225 Difference]: With dead ends: 7278 [2024-10-13 09:21:01,204 INFO L226 Difference]: Without dead ends: 6110 [2024-10-13 09:21:01,210 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3230 GetRequests, 3146 SyntacticMatches, 7 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1819 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1320, Invalid=4842, Unknown=0, NotChecked=0, Total=6162 [2024-10-13 09:21:01,211 INFO L432 NwaCegarLoop]: 4746 mSDtfsCounter, 13267 mSDsluCounter, 69787 mSDsCounter, 0 mSdLazyCounter, 3643 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13432 SdHoareTripleChecker+Valid, 74533 SdHoareTripleChecker+Invalid, 3817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 3643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-10-13 09:21:01,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13432 Valid, 74533 Invalid, 3817 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [174 Valid, 3643 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-10-13 09:21:01,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6110 states. [2024-10-13 09:21:01,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6110 to 5957. [2024-10-13 09:21:01,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5957 states, 5860 states have (on average 1.3418088737201366) internal successors, (7863), 5865 states have internal predecessors, (7863), 92 states have call successors, (92), 4 states have call predecessors, (92), 4 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2024-10-13 09:21:01,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5957 states to 5957 states and 8046 transitions. [2024-10-13 09:21:01,365 INFO L78 Accepts]: Start accepts. Automaton has 5957 states and 8046 transitions. Word has length 1584 [2024-10-13 09:21:01,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:21:01,367 INFO L471 AbstractCegarLoop]: Abstraction has 5957 states and 8046 transitions. [2024-10-13 09:21:01,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 105.53125) internal successors, (3377), 31 states have internal predecessors, (3377), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-13 09:21:01,368 INFO L276 IsEmpty]: Start isEmpty. Operand 5957 states and 8046 transitions. [2024-10-13 09:21:01,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2509 [2024-10-13 09:21:01,412 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:21:01,413 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 12, 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, 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] [2024-10-13 09:21:01,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 09:21:01,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-13 09:21:01,615 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:21:01,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:21:01,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1702597219, now seen corresponding path program 1 times [2024-10-13 09:21:01,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:21:01,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846096361] [2024-10-13 09:21:01,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:21:01,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms