./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU --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 df25530cebe2f8dbf5c0f407e5ccf4cecba61e3d44431cb17b70a57441db534c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:14:18,412 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:14:18,472 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:14:18,477 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:14:18,478 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:14:18,515 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:14:18,516 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:14:18,519 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:14:18,520 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:14:18,521 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:14:18,521 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:14:18,522 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:14:18,522 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:14:18,523 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:14:18,525 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:14:18,526 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:14:18,527 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:14:18,527 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:14:18,527 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:14:18,528 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:14:18,528 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:14:18,529 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:14:18,529 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:14:18,529 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:14:18,530 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:14:18,530 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:14:18,530 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:14:18,531 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:14:18,531 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:14:18,531 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:14:18,532 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:14:18,532 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:14:18,532 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:14:18,533 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:14:18,533 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:14:18,534 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:14:18,534 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:14:18,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:14:18,535 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:14:18,535 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:14:18,535 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:14:18,536 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:14:18,537 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df25530cebe2f8dbf5c0f407e5ccf4cecba61e3d44431cb17b70a57441db534c [2024-10-31 22:14:18,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:14:18,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:14:18,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:14:18,977 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:14:18,978 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:14:18,979 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i Unable to find full path for "g++" [2024-10-31 22:14:21,077 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:14:21,391 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:14:21,395 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i [2024-10-31 22:14:21,417 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/data/e761549d3/d3584713c67d46949554566cc1587121/FLAG980157f42 [2024-10-31 22:14:21,431 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/data/e761549d3/d3584713c67d46949554566cc1587121 [2024-10-31 22:14:21,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:14:21,435 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:14:21,436 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:14:21,437 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:14:21,446 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:14:21,448 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:14:21" (1/1) ... [2024-10-31 22:14:21,450 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f83d5c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:21, skipping insertion in model container [2024-10-31 22:14:21,451 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:14:21" (1/1) ... [2024-10-31 22:14:21,514 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:14:22,077 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i[33021,33034] [2024-10-31 22:14:22,324 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i[49681,49694] [2024-10-31 22:14:22,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:14:22,351 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:14:22,383 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i[33021,33034] [2024-10-31 22:14:22,465 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-1.i[49681,49694] [2024-10-31 22:14:22,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:14:22,523 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:14:22,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:22 WrapperNode [2024-10-31 22:14:22,524 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:14:22,525 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:14:22,526 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:14:22,526 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:14:22,535 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:22" (1/1) ... [2024-10-31 22:14:22,588 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:22" (1/1) ... [2024-10-31 22:14:22,697 INFO L138 Inliner]: procedures = 177, calls = 373, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2036 [2024-10-31 22:14:22,698 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:14:22,699 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:14:22,699 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:14:22,699 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:14:22,712 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:22" (1/1) ... [2024-10-31 22:14:22,713 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:22" (1/1) ... [2024-10-31 22:14:22,731 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:22" (1/1) ... [2024-10-31 22:14:22,848 INFO L175 MemorySlicer]: Split 349 memory accesses to 3 slices as follows [2, 24, 323]. 93 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 83 writes are split as follows [0, 1, 82]. [2024-10-31 22:14:22,848 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:22" (1/1) ... [2024-10-31 22:14:22,848 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:22" (1/1) ... [2024-10-31 22:14:22,967 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:22" (1/1) ... [2024-10-31 22:14:22,998 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:22" (1/1) ... [2024-10-31 22:14:23,009 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:22" (1/1) ... [2024-10-31 22:14:23,022 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:22" (1/1) ... [2024-10-31 22:14:23,041 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:14:23,043 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:14:23,044 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:14:23,044 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:14:23,046 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:22" (1/1) ... [2024-10-31 22:14:23,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:14:23,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:23,083 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:14:23,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:14:23,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:14:23,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:14:23,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-31 22:14:23,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-31 22:14:23,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-31 22:14:23,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:14:23,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:14:23,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-31 22:14:23,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-31 22:14:23,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-31 22:14:23,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-10-31 22:14:23,119 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-31 22:14:23,119 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-31 22:14:23,119 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-10-31 22:14:23,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:14:23,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:14:23,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-31 22:14:23,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-31 22:14:23,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-31 22:14:23,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 22:14:23,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-31 22:14:23,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-31 22:14:23,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-31 22:14:23,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:14:23,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:14:23,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:14:23,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:14:23,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:14:23,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:14:23,391 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:14:23,394 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:14:26,177 INFO L? ?]: Removed 483 outVars from TransFormulas that were not future-live. [2024-10-31 22:14:26,177 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:14:26,214 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:14:26,214 INFO L316 CfgBuilder]: Removed 83 assume(true) statements. [2024-10-31 22:14:26,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:14:26 BoogieIcfgContainer [2024-10-31 22:14:26,215 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:14:26,217 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:14:26,217 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:14:26,225 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:14:26,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:14:21" (1/3) ... [2024-10-31 22:14:26,226 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c281f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:14:26, skipping insertion in model container [2024-10-31 22:14:26,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:22" (2/3) ... [2024-10-31 22:14:26,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c281f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:14:26, skipping insertion in model container [2024-10-31 22:14:26,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:14:26" (3/3) ... [2024-10-31 22:14:26,228 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test5-1.i [2024-10-31 22:14:26,247 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:14:26,247 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 22:14:26,359 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:14:26,366 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;@52566779, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:14:26,366 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-31 22:14:26,372 INFO L276 IsEmpty]: Start isEmpty. Operand has 569 states, 553 states have (on average 1.623869801084991) internal successors, (898), 560 states have internal predecessors, (898), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-31 22:14:26,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-31 22:14:26,379 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:14:26,379 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:14:26,380 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:14:26,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:26,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1010421804, now seen corresponding path program 1 times [2024-10-31 22:14:26,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:26,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818285094] [2024-10-31 22:14:26,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:26,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:26,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:26,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:26,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818285094] [2024-10-31 22:14:26,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818285094] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:26,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:14:26,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:14:26,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365775191] [2024-10-31 22:14:26,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:26,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:14:26,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:26,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:14:26,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:14:26,642 INFO L87 Difference]: Start difference. First operand has 569 states, 553 states have (on average 1.623869801084991) internal successors, (898), 560 states have internal predecessors, (898), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:14:26,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:14:26,732 INFO L93 Difference]: Finished difference Result 1136 states and 1843 transitions. [2024-10-31 22:14:26,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:14:26,734 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-31 22:14:26,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:14:26,754 INFO L225 Difference]: With dead ends: 1136 [2024-10-31 22:14:26,754 INFO L226 Difference]: Without dead ends: 565 [2024-10-31 22:14:26,759 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 [2024-10-31 22:14:26,763 INFO L432 NwaCegarLoop]: 828 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:14:26,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:14:26,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2024-10-31 22:14:26,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 565. [2024-10-31 22:14:26,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 550 states have (on average 1.4581818181818182) internal successors, (802), 556 states have internal predecessors, (802), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-31 22:14:26,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 824 transitions. [2024-10-31 22:14:26,873 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 824 transitions. Word has length 8 [2024-10-31 22:14:26,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:14:26,877 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 824 transitions. [2024-10-31 22:14:26,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:14:26,877 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 824 transitions. [2024-10-31 22:14:26,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-31 22:14:26,884 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:14:26,884 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] [2024-10-31 22:14:26,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:14:26,885 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:14:26,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:26,890 INFO L85 PathProgramCache]: Analyzing trace with hash 76912623, now seen corresponding path program 1 times [2024-10-31 22:14:26,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:26,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144582148] [2024-10-31 22:14:26,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:26,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:26,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:27,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:27,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:27,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144582148] [2024-10-31 22:14:27,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144582148] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:27,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:14:27,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:14:27,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79217394] [2024-10-31 22:14:27,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:27,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:14:27,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:27,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:14:27,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:14:27,304 INFO L87 Difference]: Start difference. First operand 565 states and 824 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:14:27,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:14:27,430 INFO L93 Difference]: Finished difference Result 1292 states and 1895 transitions. [2024-10-31 22:14:27,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:14:27,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-31 22:14:27,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:14:27,439 INFO L225 Difference]: With dead ends: 1292 [2024-10-31 22:14:27,440 INFO L226 Difference]: Without dead ends: 1117 [2024-10-31 22:14:27,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:14:27,444 INFO L432 NwaCegarLoop]: 824 mSDtfsCounter, 787 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:14:27,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 1641 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:14:27,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2024-10-31 22:14:27,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 566. [2024-10-31 22:14:27,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 551 states have (on average 1.4573502722323048) internal successors, (803), 557 states have internal predecessors, (803), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-31 22:14:27,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 825 transitions. [2024-10-31 22:14:27,543 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 825 transitions. Word has length 62 [2024-10-31 22:14:27,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:14:27,543 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 825 transitions. [2024-10-31 22:14:27,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:14:27,544 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 825 transitions. [2024-10-31 22:14:27,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-10-31 22:14:27,561 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:14:27,561 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:14:27,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:14:27,562 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:14:27,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:27,562 INFO L85 PathProgramCache]: Analyzing trace with hash 41978054, now seen corresponding path program 1 times [2024-10-31 22:14:27,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:27,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017241980] [2024-10-31 22:14:27,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:27,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:28,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:28,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:28,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017241980] [2024-10-31 22:14:28,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017241980] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:28,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:14:28,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:14:28,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677864249] [2024-10-31 22:14:28,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:28,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:14:28,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:28,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:14:28,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:14:28,342 INFO L87 Difference]: Start difference. First operand 566 states and 825 transitions. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:14:28,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:14:28,478 INFO L93 Difference]: Finished difference Result 1132 states and 1650 transitions. [2024-10-31 22:14:28,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:14:28,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2024-10-31 22:14:28,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:14:28,484 INFO L225 Difference]: With dead ends: 1132 [2024-10-31 22:14:28,485 INFO L226 Difference]: Without dead ends: 569 [2024-10-31 22:14:28,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:14:28,487 INFO L432 NwaCegarLoop]: 796 mSDtfsCounter, 105 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 2295 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:14:28,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 2295 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:14:28,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2024-10-31 22:14:28,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 566. [2024-10-31 22:14:28,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 551 states have (on average 1.4446460980036298) internal successors, (796), 557 states have internal predecessors, (796), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-31 22:14:28,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 818 transitions. [2024-10-31 22:14:28,521 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 818 transitions. Word has length 208 [2024-10-31 22:14:28,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:14:28,522 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 818 transitions. [2024-10-31 22:14:28,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:14:28,522 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 818 transitions. [2024-10-31 22:14:28,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-10-31 22:14:28,531 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:14:28,531 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:14:28,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:14:28,531 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:14:28,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:28,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1497571398, now seen corresponding path program 1 times [2024-10-31 22:14:28,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:28,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431103123] [2024-10-31 22:14:28,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:28,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:29,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:14:29,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:29,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431103123] [2024-10-31 22:14:29,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431103123] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:29,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:14:29,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:14:29,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811963708] [2024-10-31 22:14:29,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:29,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:14:29,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:29,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:14:29,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:14:29,038 INFO L87 Difference]: Start difference. First operand 566 states and 818 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:14:29,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:14:29,146 INFO L93 Difference]: Finished difference Result 1258 states and 1822 transitions. [2024-10-31 22:14:29,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:14:29,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2024-10-31 22:14:29,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:14:29,152 INFO L225 Difference]: With dead ends: 1258 [2024-10-31 22:14:29,152 INFO L226 Difference]: Without dead ends: 695 [2024-10-31 22:14:29,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:14:29,155 INFO L432 NwaCegarLoop]: 816 mSDtfsCounter, 134 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:14:29,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1625 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:14:29,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2024-10-31 22:14:29,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2024-10-31 22:14:29,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 680 states have (on average 1.4470588235294117) internal successors, (984), 686 states have internal predecessors, (984), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-31 22:14:29,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1006 transitions. [2024-10-31 22:14:29,213 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1006 transitions. Word has length 208 [2024-10-31 22:14:29,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:14:29,214 INFO L471 AbstractCegarLoop]: Abstraction has 695 states and 1006 transitions. [2024-10-31 22:14:29,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:14:29,215 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1006 transitions. [2024-10-31 22:14:29,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-10-31 22:14:29,220 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:14:29,220 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] [2024-10-31 22:14:29,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:14:29,221 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:14:29,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:29,222 INFO L85 PathProgramCache]: Analyzing trace with hash 2136259473, now seen corresponding path program 1 times [2024-10-31 22:14:29,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:29,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410884408] [2024-10-31 22:14:29,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:29,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:29,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-31 22:14:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:29,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-31 22:14:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:29,831 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:14:29,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:29,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410884408] [2024-10-31 22:14:29,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410884408] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:29,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:14:29,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:14:29,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654950661] [2024-10-31 22:14:29,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:29,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:14:29,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:29,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:14:29,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:14:29,836 INFO L87 Difference]: Start difference. First operand 695 states and 1006 transitions. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 4 states have internal predecessors, (216), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-31 22:14:31,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:14:31,165 INFO L93 Difference]: Finished difference Result 1219 states and 1764 transitions. [2024-10-31 22:14:31,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:14:31,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 4 states have internal predecessors, (216), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 223 [2024-10-31 22:14:31,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:14:31,171 INFO L225 Difference]: With dead ends: 1219 [2024-10-31 22:14:31,171 INFO L226 Difference]: Without dead ends: 656 [2024-10-31 22:14:31,173 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 [2024-10-31 22:14:31,174 INFO L432 NwaCegarLoop]: 709 mSDtfsCounter, 38 mSDsluCounter, 1990 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2699 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:14:31,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 2699 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-31 22:14:31,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2024-10-31 22:14:31,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 653. [2024-10-31 22:14:31,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 638 states have (on average 1.421630094043887) internal successors, (907), 644 states have internal predecessors, (907), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-31 22:14:31,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 929 transitions. [2024-10-31 22:14:31,202 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 929 transitions. Word has length 223 [2024-10-31 22:14:31,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:14:31,205 INFO L471 AbstractCegarLoop]: Abstraction has 653 states and 929 transitions. [2024-10-31 22:14:31,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 4 states have internal predecessors, (216), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-31 22:14:31,206 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 929 transitions. [2024-10-31 22:14:31,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-10-31 22:14:31,211 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:14:31,211 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] [2024-10-31 22:14:31,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:14:31,212 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:14:31,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:31,213 INFO L85 PathProgramCache]: Analyzing trace with hash -659136995, now seen corresponding path program 1 times [2024-10-31 22:14:31,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:31,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366470173] [2024-10-31 22:14:31,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:31,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:31,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-31 22:14:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:31,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-31 22:14:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:31,585 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:14:31,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:31,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366470173] [2024-10-31 22:14:31,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366470173] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:31,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:14:31,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:14:31,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497890647] [2024-10-31 22:14:31,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:31,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:14:31,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:31,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:14:31,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:14:31,589 INFO L87 Difference]: Start difference. First operand 653 states and 929 transitions. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-31 22:14:32,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:14:32,184 INFO L93 Difference]: Finished difference Result 1470 states and 2101 transitions. [2024-10-31 22:14:32,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:14:32,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 223 [2024-10-31 22:14:32,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:14:32,190 INFO L225 Difference]: With dead ends: 1470 [2024-10-31 22:14:32,190 INFO L226 Difference]: Without dead ends: 949 [2024-10-31 22:14:32,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:14:32,192 INFO L432 NwaCegarLoop]: 921 mSDtfsCounter, 463 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 2443 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:14:32,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 2443 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-31 22:14:32,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2024-10-31 22:14:32,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 944. [2024-10-31 22:14:32,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 921 states have (on average 1.4223669923995657) internal successors, (1310), 932 states have internal predecessors, (1310), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 11 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-31 22:14:32,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1348 transitions. [2024-10-31 22:14:32,230 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1348 transitions. Word has length 223 [2024-10-31 22:14:32,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:14:32,231 INFO L471 AbstractCegarLoop]: Abstraction has 944 states and 1348 transitions. [2024-10-31 22:14:32,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-31 22:14:32,232 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1348 transitions. [2024-10-31 22:14:32,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-10-31 22:14:32,236 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:14:32,236 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:14:32,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:14:32,236 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:14:32,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:32,237 INFO L85 PathProgramCache]: Analyzing trace with hash 967606176, now seen corresponding path program 1 times [2024-10-31 22:14:32,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:32,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964366991] [2024-10-31 22:14:32,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:32,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:32,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-31 22:14:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:32,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-31 22:14:32,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:32,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-10-31 22:14:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:32,808 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-10-31 22:14:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:32,814 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-31 22:14:32,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:32,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964366991] [2024-10-31 22:14:32,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964366991] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:14:32,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807041915] [2024-10-31 22:14:32,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:32,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:14:32,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:32,818 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:14:32,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:14:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:33,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 1194 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:14:33,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:14:33,539 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-31 22:14:33,540 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:14:33,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807041915] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:33,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:14:33,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-31 22:14:33,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900013888] [2024-10-31 22:14:33,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:33,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:14:33,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:33,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:14:33,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:14:33,542 INFO L87 Difference]: Start difference. First operand 944 states and 1348 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-31 22:14:33,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:14:33,654 INFO L93 Difference]: Finished difference Result 1303 states and 1888 transitions. [2024-10-31 22:14:33,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:14:33,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 238 [2024-10-31 22:14:33,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:14:33,660 INFO L225 Difference]: With dead ends: 1303 [2024-10-31 22:14:33,661 INFO L226 Difference]: Without dead ends: 984 [2024-10-31 22:14:33,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:14:33,663 INFO L432 NwaCegarLoop]: 714 mSDtfsCounter, 8 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:14:33,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1413 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:14:33,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2024-10-31 22:14:33,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 984. [2024-10-31 22:14:33,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 961 states have (on average 1.4047866805411031) internal successors, (1350), 972 states have internal predecessors, (1350), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 11 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-31 22:14:33,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1388 transitions. [2024-10-31 22:14:33,701 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1388 transitions. Word has length 238 [2024-10-31 22:14:33,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:14:33,702 INFO L471 AbstractCegarLoop]: Abstraction has 984 states and 1388 transitions. [2024-10-31 22:14:33,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-31 22:14:33,702 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1388 transitions. [2024-10-31 22:14:33,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-10-31 22:14:33,706 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:14:33,707 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:14:33,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:14:33,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:14:33,908 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:14:33,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:33,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1955553822, now seen corresponding path program 1 times [2024-10-31 22:14:33,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:33,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031104307] [2024-10-31 22:14:33,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:33,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:34,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-31 22:14:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:34,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-31 22:14:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:34,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-10-31 22:14:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:34,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-10-31 22:14:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:34,534 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-31 22:14:34,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:34,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031104307] [2024-10-31 22:14:34,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031104307] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:14:34,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743968108] [2024-10-31 22:14:34,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:34,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:14:34,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:34,541 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:14:34,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:14:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:35,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:14:35,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:14:35,251 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-31 22:14:35,252 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:14:35,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743968108] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:35,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:14:35,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-10-31 22:14:35,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820850752] [2024-10-31 22:14:35,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:35,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:14:35,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:35,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:14:35,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:14:35,255 INFO L87 Difference]: Start difference. First operand 984 states and 1388 transitions. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-31 22:14:35,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:14:35,374 INFO L93 Difference]: Finished difference Result 1315 states and 1880 transitions. [2024-10-31 22:14:35,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:14:35,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 238 [2024-10-31 22:14:35,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:14:35,379 INFO L225 Difference]: With dead ends: 1315 [2024-10-31 22:14:35,380 INFO L226 Difference]: Without dead ends: 956 [2024-10-31 22:14:35,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:14:35,382 INFO L432 NwaCegarLoop]: 706 mSDtfsCounter, 105 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 2025 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:14:35,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 2025 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:14:35,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2024-10-31 22:14:35,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 956. [2024-10-31 22:14:35,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 933 states have (on average 1.4019292604501608) internal successors, (1308), 944 states have internal predecessors, (1308), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 11 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-31 22:14:35,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1346 transitions. [2024-10-31 22:14:35,439 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1346 transitions. Word has length 238 [2024-10-31 22:14:35,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:14:35,439 INFO L471 AbstractCegarLoop]: Abstraction has 956 states and 1346 transitions. [2024-10-31 22:14:35,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-31 22:14:35,440 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1346 transitions. [2024-10-31 22:14:35,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-10-31 22:14:35,443 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:14:35,444 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:14:35,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:14:35,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-31 22:14:35,645 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:14:35,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:35,645 INFO L85 PathProgramCache]: Analyzing trace with hash -203907948, now seen corresponding path program 1 times [2024-10-31 22:14:35,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:35,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5712017] [2024-10-31 22:14:35,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:35,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:36,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-31 22:14:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:36,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-31 22:14:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:36,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-10-31 22:14:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:36,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-10-31 22:14:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:36,095 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-31 22:14:36,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:36,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5712017] [2024-10-31 22:14:36,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5712017] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:14:36,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051105731] [2024-10-31 22:14:36,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:36,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:14:36,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:36,098 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:14:36,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:14:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:36,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 1170 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:14:36,783 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:14:37,124 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-31 22:14:37,124 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:14:37,535 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-31 22:14:37,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051105731] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:14:37,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:14:37,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2024-10-31 22:14:37,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064617324] [2024-10-31 22:14:37,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:14:37,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:14:37,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:37,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:14:37,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:14:37,540 INFO L87 Difference]: Start difference. First operand 956 states and 1346 transitions. Second operand has 8 states, 8 states have (on average 67.125) internal successors, (537), 7 states have internal predecessors, (537), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-31 22:14:38,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:14:38,553 INFO L93 Difference]: Finished difference Result 2554 states and 3639 transitions. [2024-10-31 22:14:38,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:14:38,555 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 67.125) internal successors, (537), 7 states have internal predecessors, (537), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 238 [2024-10-31 22:14:38,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:14:38,564 INFO L225 Difference]: With dead ends: 2554 [2024-10-31 22:14:38,565 INFO L226 Difference]: Without dead ends: 2222 [2024-10-31 22:14:38,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:14:38,568 INFO L432 NwaCegarLoop]: 719 mSDtfsCounter, 2216 mSDsluCounter, 3230 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2263 SdHoareTripleChecker+Valid, 3949 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-31 22:14:38,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2263 Valid, 3949 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-31 22:14:38,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2024-10-31 22:14:38,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 1703. [2024-10-31 22:14:38,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1703 states, 1665 states have (on average 1.3867867867867867) internal successors, (2309), 1676 states have internal predecessors, (2309), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 26 states have call predecessors, (34), 34 states have call successors, (34) [2024-10-31 22:14:38,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 2377 transitions. [2024-10-31 22:14:38,637 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 2377 transitions. Word has length 238 [2024-10-31 22:14:38,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:14:38,637 INFO L471 AbstractCegarLoop]: Abstraction has 1703 states and 2377 transitions. [2024-10-31 22:14:38,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 67.125) internal successors, (537), 7 states have internal predecessors, (537), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-31 22:14:38,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 2377 transitions. [2024-10-31 22:14:38,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2024-10-31 22:14:38,657 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:14:38,658 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:14:38,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:14:38,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:14:38,864 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:14:38,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:38,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1199430247, now seen corresponding path program 1 times [2024-10-31 22:14:38,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:38,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124386129] [2024-10-31 22:14:38,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:38,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:41,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-31 22:14:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:41,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-31 22:14:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:41,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-10-31 22:14:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:41,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-10-31 22:14:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:41,119 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 4 proven. 534 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2024-10-31 22:14:41,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:41,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124386129] [2024-10-31 22:14:41,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124386129] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:14:41,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091946668] [2024-10-31 22:14:41,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:41,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:14:41,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:41,122 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:14:41,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da92bd7b-382f-4cff-9eb4-5a52091c16ae/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:14:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:42,566 INFO L255 TraceCheckSpWp]: Trace formula consists of 3219 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:14:42,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:14:43,771 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 0 proven. 868 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-31 22:14:43,771 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:14:45,025 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 0 proven. 868 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-31 22:14:45,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091946668] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:14:45,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:14:45,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-10-31 22:14:45,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106584182] [2024-10-31 22:14:45,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:14:45,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-31 22:14:45,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:45,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-31 22:14:45,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2024-10-31 22:14:45,033 INFO L87 Difference]: Start difference. First operand 1703 states and 2377 transitions. Second operand has 17 states, 17 states have (on average 98.17647058823529) internal successors, (1669), 16 states have internal predecessors, (1669), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12)