./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-90.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-90.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC --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 9c6e745fb3369f6d50167657c14f10731407b128ae2baded15d3743683fdbf24 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:53:26,926 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:53:27,036 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:53:27,043 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:53:27,044 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:53:27,080 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:53:27,081 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:53:27,081 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:53:27,082 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:53:27,082 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:53:27,082 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:53:27,082 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:53:27,082 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:53:27,083 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:53:27,083 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:53:27,083 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:53:27,083 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:53:27,083 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:53:27,083 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:53:27,083 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:53:27,084 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:53:27,084 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:53:27,086 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:53:27,086 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:53:27,086 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:53:27,087 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:53:27,087 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:53:27,087 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:53:27,087 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:53:27,087 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:53:27,087 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:53:27,087 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:53:27,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:53:27,087 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:53:27,088 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:53:27,088 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:53:27,088 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:53:27,088 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:53:27,088 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:53:27,088 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:53:27,088 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:53:27,088 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:53:27,089 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:53:27,089 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:53:27,089 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:53:27,089 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:53:27,089 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:53:27,089 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:53:27,089 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC 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 -> 9c6e745fb3369f6d50167657c14f10731407b128ae2baded15d3743683fdbf24 [2024-11-24 00:53:27,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:53:27,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:53:27,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:53:27,561 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:53:27,562 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:53:27,563 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-90.i [2024-11-24 00:53:30,829 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/data/de02ae1e8/5d2cda7481404232be4b43439e728e08/FLAG543deb045 [2024-11-24 00:53:31,217 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:53:31,221 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-90.i [2024-11-24 00:53:31,252 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/data/de02ae1e8/5d2cda7481404232be4b43439e728e08/FLAG543deb045 [2024-11-24 00:53:31,301 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/data/de02ae1e8/5d2cda7481404232be4b43439e728e08 [2024-11-24 00:53:31,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:53:31,309 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:53:31,311 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:53:31,315 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:53:31,324 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:53:31,326 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:53:31" (1/1) ... [2024-11-24 00:53:31,327 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f7b7d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:31, skipping insertion in model container [2024-11-24 00:53:31,327 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:53:31" (1/1) ... [2024-11-24 00:53:31,351 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:53:31,565 WARN L250 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_304b1bf7-66be-49a3-811b-59859708e5bc/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-90.i[916,929] [2024-11-24 00:53:31,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:53:31,679 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:53:31,691 WARN L250 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_304b1bf7-66be-49a3-811b-59859708e5bc/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-90.i[916,929] [2024-11-24 00:53:31,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:53:31,757 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:53:31,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:31 WrapperNode [2024-11-24 00:53:31,758 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:53:31,759 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:53:31,760 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:53:31,760 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:53:31,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:31" (1/1) ... [2024-11-24 00:53:31,781 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:31" (1/1) ... [2024-11-24 00:53:31,832 INFO L138 Inliner]: procedures = 26, calls = 176, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 505 [2024-11-24 00:53:31,833 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:53:31,835 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:53:31,835 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:53:31,836 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:53:31,849 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:31" (1/1) ... [2024-11-24 00:53:31,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:31" (1/1) ... [2024-11-24 00:53:31,858 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:31" (1/1) ... [2024-11-24 00:53:31,909 INFO L175 MemorySlicer]: Split 130 memory accesses to 16 slices as follows [2, 3, 6, 16, 8, 12, 13, 8, 14, 8, 6, 8, 6, 4, 12, 4]. 12 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]. The 19 writes are split as follows [0, 1, 1, 1, 1, 1, 4, 1, 1, 2, 1, 1, 1, 1, 1, 1]. [2024-11-24 00:53:31,913 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:31" (1/1) ... [2024-11-24 00:53:31,913 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:31" (1/1) ... [2024-11-24 00:53:31,944 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:31" (1/1) ... [2024-11-24 00:53:31,945 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:31" (1/1) ... [2024-11-24 00:53:31,958 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:31" (1/1) ... [2024-11-24 00:53:31,962 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:31" (1/1) ... [2024-11-24 00:53:31,971 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:31" (1/1) ... [2024-11-24 00:53:31,980 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:53:31,982 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:53:31,984 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:53:31,984 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:53:31,986 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:31" (1/1) ... [2024-11-24 00:53:31,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:53:32,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:53:32,037 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:53:32,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:53:32,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:53:32,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 00:53:32,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 00:53:32,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-24 00:53:32,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-24 00:53:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-24 00:53:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-24 00:53:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-24 00:53:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-24 00:53:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-24 00:53:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-24 00:53:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-24 00:53:32,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-24 00:53:32,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-24 00:53:32,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-24 00:53:32,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-24 00:53:32,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-11-24 00:53:32,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 00:53:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 00:53:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-24 00:53:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-24 00:53:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-24 00:53:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-24 00:53:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-24 00:53:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-24 00:53:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-24 00:53:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-24 00:53:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-24 00:53:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-24 00:53:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-24 00:53:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-24 00:53:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-24 00:53:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-11-24 00:53:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 00:53:32,087 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 00:53:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:53:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 00:53:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 00:53:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-24 00:53:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-24 00:53:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-24 00:53:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-24 00:53:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-24 00:53:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-24 00:53:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-24 00:53:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-24 00:53:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-24 00:53:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-24 00:53:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-24 00:53:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-24 00:53:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-24 00:53:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:53:32,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:53:32,396 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:53:32,399 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:53:33,259 INFO L? ?]: Removed 112 outVars from TransFormulas that were not future-live. [2024-11-24 00:53:33,259 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:53:33,284 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:53:33,284 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 00:53:33,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:53:33 BoogieIcfgContainer [2024-11-24 00:53:33,288 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:53:33,290 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:53:33,291 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:53:33,297 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:53:33,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:53:31" (1/3) ... [2024-11-24 00:53:33,298 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c5725f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:53:33, skipping insertion in model container [2024-11-24 00:53:33,298 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:31" (2/3) ... [2024-11-24 00:53:33,299 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c5725f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:53:33, skipping insertion in model container [2024-11-24 00:53:33,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:53:33" (3/3) ... [2024-11-24 00:53:33,301 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-90.i [2024-11-24 00:53:33,320 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:53:33,322 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-p_file-90.i that has 2 procedures, 111 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:53:33,396 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:53:33,411 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;@c5a39dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:53:33,411 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:53:33,416 INFO L276 IsEmpty]: Start isEmpty. Operand has 111 states, 88 states have (on average 1.375) internal successors, (121), 89 states have internal predecessors, (121), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-24 00:53:33,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-24 00:53:33,431 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:33,432 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:33,433 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:33,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:33,440 INFO L85 PathProgramCache]: Analyzing trace with hash -803015530, now seen corresponding path program 1 times [2024-11-24 00:53:33,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:33,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756151173] [2024-11-24 00:53:33,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:33,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:33,940 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-24 00:53:33,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:33,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756151173] [2024-11-24 00:53:33,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756151173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:53:33,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029795277] [2024-11-24 00:53:33,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:33,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:53:33,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:53:33,950 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:53:33,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:53:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:34,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 00:53:34,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:53:34,424 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-24 00:53:34,424 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:53:34,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029795277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:53:34,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:53:34,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 00:53:34,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378713961] [2024-11-24 00:53:34,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:53:34,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:53:34,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:34,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:53:34,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:53:34,462 INFO L87 Difference]: Start difference. First operand has 111 states, 88 states have (on average 1.375) internal successors, (121), 89 states have internal predecessors, (121), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-24 00:53:34,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:34,501 INFO L93 Difference]: Finished difference Result 215 states and 336 transitions. [2024-11-24 00:53:34,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:53:34,504 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 153 [2024-11-24 00:53:34,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:34,513 INFO L225 Difference]: With dead ends: 215 [2024-11-24 00:53:34,513 INFO L226 Difference]: Without dead ends: 107 [2024-11-24 00:53:34,518 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:53:34,521 INFO L435 NwaCegarLoop]: 154 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, 154 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:34,522 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:53:34,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-24 00:53:34,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2024-11-24 00:53:34,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 85 states have (on average 1.3411764705882352) internal successors, (114), 85 states have internal predecessors, (114), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-24 00:53:34,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 154 transitions. [2024-11-24 00:53:34,575 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 154 transitions. Word has length 153 [2024-11-24 00:53:34,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:34,576 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 154 transitions. [2024-11-24 00:53:34,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-24 00:53:34,577 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 154 transitions. [2024-11-24 00:53:34,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-24 00:53:34,580 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:34,581 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:34,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 00:53:34,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:53:34,782 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:34,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:34,783 INFO L85 PathProgramCache]: Analyzing trace with hash 82058350, now seen corresponding path program 1 times [2024-11-24 00:53:34,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:34,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183969932] [2024-11-24 00:53:34,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:34,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:35,666 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-24 00:53:35,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:35,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183969932] [2024-11-24 00:53:35,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183969932] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:53:35,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531273100] [2024-11-24 00:53:35,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:35,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:53:35,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:53:35,675 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:53:35,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:53:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:36,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 00:53:36,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:53:36,142 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:53:36,142 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:53:36,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531273100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:53:36,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:53:36,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2024-11-24 00:53:36,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856338856] [2024-11-24 00:53:36,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:53:36,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:53:36,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:36,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:53:36,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:53:36,155 INFO L87 Difference]: Start difference. First operand 107 states and 154 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:36,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:36,233 INFO L93 Difference]: Finished difference Result 213 states and 308 transitions. [2024-11-24 00:53:36,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:53:36,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 153 [2024-11-24 00:53:36,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:36,241 INFO L225 Difference]: With dead ends: 213 [2024-11-24 00:53:36,241 INFO L226 Difference]: Without dead ends: 109 [2024-11-24 00:53:36,242 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:53:36,244 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 0 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:36,244 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 445 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:53:36,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-24 00:53:36,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-24 00:53:36,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 87 states have (on average 1.3333333333333333) internal successors, (116), 87 states have internal predecessors, (116), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-24 00:53:36,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 156 transitions. [2024-11-24 00:53:36,260 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 156 transitions. Word has length 153 [2024-11-24 00:53:36,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:36,262 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 156 transitions. [2024-11-24 00:53:36,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:36,263 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 156 transitions. [2024-11-24 00:53:36,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-24 00:53:36,266 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:36,266 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:36,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 00:53:36,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:53:36,474 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:36,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:36,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1318528233, now seen corresponding path program 1 times [2024-11-24 00:53:36,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:36,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24966612] [2024-11-24 00:53:36,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:36,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:37,340 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:53:37,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:37,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24966612] [2024-11-24 00:53:37,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24966612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:53:37,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:53:37,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:53:37,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730217362] [2024-11-24 00:53:37,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:53:37,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:53:37,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:37,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:53:37,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:53:37,345 INFO L87 Difference]: Start difference. First operand 109 states and 156 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:37,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:37,539 INFO L93 Difference]: Finished difference Result 323 states and 464 transitions. [2024-11-24 00:53:37,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:53:37,541 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 155 [2024-11-24 00:53:37,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:37,544 INFO L225 Difference]: With dead ends: 323 [2024-11-24 00:53:37,548 INFO L226 Difference]: Without dead ends: 217 [2024-11-24 00:53:37,549 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:53:37,550 INFO L435 NwaCegarLoop]: 287 mSDtfsCounter, 146 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:37,553 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 994 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:53:37,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-11-24 00:53:37,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 114. [2024-11-24 00:53:37,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 92 states have (on average 1.326086956521739) internal successors, (122), 92 states have internal predecessors, (122), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-24 00:53:37,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 162 transitions. [2024-11-24 00:53:37,586 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 162 transitions. Word has length 155 [2024-11-24 00:53:37,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:37,587 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 162 transitions. [2024-11-24 00:53:37,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:37,588 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 162 transitions. [2024-11-24 00:53:37,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-24 00:53:37,594 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:37,594 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:37,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:53:37,594 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:37,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:37,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1537382951, now seen corresponding path program 1 times [2024-11-24 00:53:37,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:37,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951590799] [2024-11-24 00:53:37,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:37,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:38,713 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:53:38,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:38,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951590799] [2024-11-24 00:53:38,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951590799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:53:38,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:53:38,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:53:38,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065917532] [2024-11-24 00:53:38,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:53:38,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:53:38,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:38,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:53:38,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:53:38,720 INFO L87 Difference]: Start difference. First operand 114 states and 162 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:39,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:39,191 INFO L93 Difference]: Finished difference Result 322 states and 460 transitions. [2024-11-24 00:53:39,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:53:39,192 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 155 [2024-11-24 00:53:39,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:39,198 INFO L225 Difference]: With dead ends: 322 [2024-11-24 00:53:39,198 INFO L226 Difference]: Without dead ends: 211 [2024-11-24 00:53:39,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:53:39,200 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 380 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:39,200 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 489 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:53:39,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-24 00:53:39,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 116. [2024-11-24 00:53:39,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 94 states have (on average 1.3191489361702127) internal successors, (124), 94 states have internal predecessors, (124), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-24 00:53:39,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 164 transitions. [2024-11-24 00:53:39,241 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 164 transitions. Word has length 155 [2024-11-24 00:53:39,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:39,242 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 164 transitions. [2024-11-24 00:53:39,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:39,242 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 164 transitions. [2024-11-24 00:53:39,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-24 00:53:39,248 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:39,248 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:39,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:53:39,249 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:39,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:39,249 INFO L85 PathProgramCache]: Analyzing trace with hash -963382957, now seen corresponding path program 1 times [2024-11-24 00:53:39,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:39,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125022259] [2024-11-24 00:53:39,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:39,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:41,033 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:53:41,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:41,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125022259] [2024-11-24 00:53:41,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125022259] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:53:41,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:53:41,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 00:53:41,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670002309] [2024-11-24 00:53:41,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:53:41,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:53:41,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:41,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:53:41,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:53:41,037 INFO L87 Difference]: Start difference. First operand 116 states and 164 transitions. Second operand has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 10 states have internal predecessors, (59), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-24 00:53:41,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:41,574 INFO L93 Difference]: Finished difference Result 236 states and 332 transitions. [2024-11-24 00:53:41,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:53:41,579 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 10 states have internal predecessors, (59), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 156 [2024-11-24 00:53:41,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:41,581 INFO L225 Difference]: With dead ends: 236 [2024-11-24 00:53:41,581 INFO L226 Difference]: Without dead ends: 123 [2024-11-24 00:53:41,582 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-24 00:53:41,586 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 310 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:41,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 702 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:53:41,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-24 00:53:41,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2024-11-24 00:53:41,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 100 states have (on average 1.3) internal successors, (130), 100 states have internal predecessors, (130), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-24 00:53:41,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 170 transitions. [2024-11-24 00:53:41,618 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 170 transitions. Word has length 156 [2024-11-24 00:53:41,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:41,619 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 170 transitions. [2024-11-24 00:53:41,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 10 states have internal predecessors, (59), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-24 00:53:41,619 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 170 transitions. [2024-11-24 00:53:41,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-24 00:53:41,623 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:41,624 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:41,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:53:41,624 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:41,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:41,625 INFO L85 PathProgramCache]: Analyzing trace with hash -842790620, now seen corresponding path program 1 times [2024-11-24 00:53:41,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:41,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636835857] [2024-11-24 00:53:41,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:41,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:42,691 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 48 proven. 9 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-24 00:53:42,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:42,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636835857] [2024-11-24 00:53:42,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636835857] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:53:42,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140632313] [2024-11-24 00:53:42,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:42,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:53:42,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:53:42,694 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:53:42,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:53:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:43,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-24 00:53:43,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:53:43,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 00:53:44,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 59 [2024-11-24 00:53:44,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-11-24 00:53:44,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2024-11-24 00:53:44,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 53 [2024-11-24 00:53:44,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 39 [2024-11-24 00:53:44,680 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2024-11-24 00:53:44,680 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:53:45,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2024-11-24 00:53:45,088 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:53:45,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 49 [2024-11-24 00:53:45,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 54 [2024-11-24 00:53:45,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-24 00:53:45,402 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:53:45,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140632313] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 00:53:45,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:53:45,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 15] total 27 [2024-11-24 00:53:45,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536460518] [2024-11-24 00:53:45,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:53:45,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:53:45,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:45,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:53:45,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2024-11-24 00:53:45,407 INFO L87 Difference]: Start difference. First operand 123 states and 170 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:46,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:46,008 INFO L93 Difference]: Finished difference Result 299 states and 411 transitions. [2024-11-24 00:53:46,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:53:46,009 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 157 [2024-11-24 00:53:46,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:46,012 INFO L225 Difference]: With dead ends: 299 [2024-11-24 00:53:46,016 INFO L226 Difference]: Without dead ends: 179 [2024-11-24 00:53:46,017 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 295 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2024-11-24 00:53:46,018 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 67 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:46,018 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 1150 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:53:46,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-24 00:53:46,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 174. [2024-11-24 00:53:46,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 148 states have (on average 1.3175675675675675) internal successors, (195), 149 states have internal predecessors, (195), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-24 00:53:46,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 239 transitions. [2024-11-24 00:53:46,053 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 239 transitions. Word has length 157 [2024-11-24 00:53:46,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:46,053 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 239 transitions. [2024-11-24 00:53:46,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:46,054 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 239 transitions. [2024-11-24 00:53:46,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-24 00:53:46,057 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:46,058 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:46,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 00:53:46,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-24 00:53:46,259 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:46,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:46,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1853907870, now seen corresponding path program 1 times [2024-11-24 00:53:46,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:46,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456907915] [2024-11-24 00:53:46,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:46,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:46,924 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:53:46,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:46,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456907915] [2024-11-24 00:53:46,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456907915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:53:46,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:53:46,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:53:46,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937577583] [2024-11-24 00:53:46,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:53:46,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:53:46,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:46,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:53:46,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:53:46,930 INFO L87 Difference]: Start difference. First operand 174 states and 239 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:47,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:47,151 INFO L93 Difference]: Finished difference Result 354 states and 483 transitions. [2024-11-24 00:53:47,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:53:47,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 157 [2024-11-24 00:53:47,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:47,155 INFO L225 Difference]: With dead ends: 354 [2024-11-24 00:53:47,155 INFO L226 Difference]: Without dead ends: 183 [2024-11-24 00:53:47,156 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:53:47,157 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 62 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:47,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 838 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:53:47,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-24 00:53:47,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 171. [2024-11-24 00:53:47,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 145 states have (on average 1.3103448275862069) internal successors, (190), 146 states have internal predecessors, (190), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-24 00:53:47,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 234 transitions. [2024-11-24 00:53:47,190 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 234 transitions. Word has length 157 [2024-11-24 00:53:47,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:47,190 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 234 transitions. [2024-11-24 00:53:47,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:47,191 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 234 transitions. [2024-11-24 00:53:47,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-24 00:53:47,193 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:47,193 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:47,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:53:47,194 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:47,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:47,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1458031970, now seen corresponding path program 1 times [2024-11-24 00:53:47,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:47,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757441294] [2024-11-24 00:53:47,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:47,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:47,785 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:53:47,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:47,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757441294] [2024-11-24 00:53:47,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757441294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:53:47,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:53:47,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:53:47,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525110251] [2024-11-24 00:53:47,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:53:47,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:53:47,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:47,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:53:47,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:53:47,789 INFO L87 Difference]: Start difference. First operand 171 states and 234 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:47,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:47,996 INFO L93 Difference]: Finished difference Result 385 states and 525 transitions. [2024-11-24 00:53:47,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:53:47,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 157 [2024-11-24 00:53:47,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:48,000 INFO L225 Difference]: With dead ends: 385 [2024-11-24 00:53:48,000 INFO L226 Difference]: Without dead ends: 217 [2024-11-24 00:53:48,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:53:48,004 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 61 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:48,004 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 807 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:53:48,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-11-24 00:53:48,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 171. [2024-11-24 00:53:48,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 145 states have (on average 1.303448275862069) internal successors, (189), 146 states have internal predecessors, (189), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-24 00:53:48,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 233 transitions. [2024-11-24 00:53:48,029 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 233 transitions. Word has length 157 [2024-11-24 00:53:48,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:48,030 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 233 transitions. [2024-11-24 00:53:48,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:48,031 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 233 transitions. [2024-11-24 00:53:48,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-24 00:53:48,033 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:48,033 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:48,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 00:53:48,034 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:48,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:48,034 INFO L85 PathProgramCache]: Analyzing trace with hash 446914720, now seen corresponding path program 1 times [2024-11-24 00:53:48,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:48,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786361525] [2024-11-24 00:53:48,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:48,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:48,772 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 48 proven. 9 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-24 00:53:48,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:48,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786361525] [2024-11-24 00:53:48,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786361525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:53:48,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106874795] [2024-11-24 00:53:48,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:48,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:53:48,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:53:48,776 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:53:48,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:53:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:49,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-24 00:53:49,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:53:49,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-24 00:53:49,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 51 [2024-11-24 00:53:49,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-11-24 00:53:49,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2024-11-24 00:53:49,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2024-11-24 00:53:49,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 29 [2024-11-24 00:53:49,958 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-24 00:53:49,959 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:53:50,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2024-11-24 00:53:50,166 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:53:50,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 49 [2024-11-24 00:53:50,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2024-11-24 00:53:50,420 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:53:50,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106874795] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 00:53:50,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:53:50,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 12] total 21 [2024-11-24 00:53:50,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993667301] [2024-11-24 00:53:50,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:53:50,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:53:50,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:50,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:53:50,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2024-11-24 00:53:50,423 INFO L87 Difference]: Start difference. First operand 171 states and 233 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:51,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:51,013 INFO L93 Difference]: Finished difference Result 399 states and 540 transitions. [2024-11-24 00:53:51,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:53:51,014 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 157 [2024-11-24 00:53:51,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:51,016 INFO L225 Difference]: With dead ends: 399 [2024-11-24 00:53:51,016 INFO L226 Difference]: Without dead ends: 231 [2024-11-24 00:53:51,018 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 301 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2024-11-24 00:53:51,019 INFO L435 NwaCegarLoop]: 217 mSDtfsCounter, 73 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:51,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 1361 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:53:51,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-24 00:53:51,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 224. [2024-11-24 00:53:51,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 190 states have (on average 1.3) internal successors, (247), 192 states have internal predecessors, (247), 28 states have call successors, (28), 5 states have call predecessors, (28), 5 states have return successors, (28), 26 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-24 00:53:51,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 303 transitions. [2024-11-24 00:53:51,059 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 303 transitions. Word has length 157 [2024-11-24 00:53:51,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:51,060 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 303 transitions. [2024-11-24 00:53:51,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:51,061 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 303 transitions. [2024-11-24 00:53:51,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-24 00:53:51,064 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:51,064 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:51,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-24 00:53:51,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:53:51,269 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:51,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:51,269 INFO L85 PathProgramCache]: Analyzing trace with hash 252308769, now seen corresponding path program 1 times [2024-11-24 00:53:51,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:51,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590234343] [2024-11-24 00:53:51,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:51,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:51,546 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:53:51,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:51,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590234343] [2024-11-24 00:53:51,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590234343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:53:51,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:53:51,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:53:51,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235653124] [2024-11-24 00:53:51,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:53:51,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:53:51,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:51,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:53:51,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:53:51,550 INFO L87 Difference]: Start difference. First operand 224 states and 303 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:51,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:51,718 INFO L93 Difference]: Finished difference Result 588 states and 802 transitions. [2024-11-24 00:53:51,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:53:51,719 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 158 [2024-11-24 00:53:51,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:51,722 INFO L225 Difference]: With dead ends: 588 [2024-11-24 00:53:51,723 INFO L226 Difference]: Without dead ends: 367 [2024-11-24 00:53:51,724 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:53:51,725 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 62 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:51,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 668 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:53:51,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-11-24 00:53:51,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 269. [2024-11-24 00:53:51,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 235 states have (on average 1.3063829787234043) internal successors, (307), 237 states have internal predecessors, (307), 28 states have call successors, (28), 5 states have call predecessors, (28), 5 states have return successors, (28), 26 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-24 00:53:51,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 363 transitions. [2024-11-24 00:53:51,773 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 363 transitions. Word has length 158 [2024-11-24 00:53:51,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:51,773 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 363 transitions. [2024-11-24 00:53:51,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:51,774 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 363 transitions. [2024-11-24 00:53:51,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-24 00:53:51,783 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:51,783 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:51,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 00:53:51,783 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:51,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:51,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1027554909, now seen corresponding path program 1 times [2024-11-24 00:53:51,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:51,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319259841] [2024-11-24 00:53:51,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:51,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:52,111 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:53:52,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:52,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319259841] [2024-11-24 00:53:52,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319259841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:53:52,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:53:52,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:53:52,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020942226] [2024-11-24 00:53:52,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:53:52,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:53:52,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:52,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:53:52,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:53:52,115 INFO L87 Difference]: Start difference. First operand 269 states and 363 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:52,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:52,294 INFO L93 Difference]: Finished difference Result 701 states and 946 transitions. [2024-11-24 00:53:52,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:53:52,295 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 158 [2024-11-24 00:53:52,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:52,298 INFO L225 Difference]: With dead ends: 701 [2024-11-24 00:53:52,298 INFO L226 Difference]: Without dead ends: 435 [2024-11-24 00:53:52,299 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:53:52,301 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 78 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:52,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 611 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:53:52,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2024-11-24 00:53:52,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 304. [2024-11-24 00:53:52,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 270 states have (on average 1.3037037037037038) internal successors, (352), 272 states have internal predecessors, (352), 28 states have call successors, (28), 5 states have call predecessors, (28), 5 states have return successors, (28), 26 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-24 00:53:52,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 408 transitions. [2024-11-24 00:53:52,348 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 408 transitions. Word has length 158 [2024-11-24 00:53:52,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:52,349 INFO L471 AbstractCegarLoop]: Abstraction has 304 states and 408 transitions. [2024-11-24 00:53:52,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:52,349 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 408 transitions. [2024-11-24 00:53:52,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-24 00:53:52,352 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:52,353 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:52,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 00:53:52,353 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:52,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:52,354 INFO L85 PathProgramCache]: Analyzing trace with hash 527068383, now seen corresponding path program 1 times [2024-11-24 00:53:52,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:52,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748596569] [2024-11-24 00:53:52,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:52,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:52,636 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:53:52,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:52,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748596569] [2024-11-24 00:53:52,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748596569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:53:52,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:53:52,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:53:52,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993287002] [2024-11-24 00:53:52,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:53:52,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:53:52,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:52,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:53:52,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:53:52,640 INFO L87 Difference]: Start difference. First operand 304 states and 408 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:52,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:52,827 INFO L93 Difference]: Finished difference Result 693 states and 927 transitions. [2024-11-24 00:53:52,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:53:52,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 158 [2024-11-24 00:53:52,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:52,831 INFO L225 Difference]: With dead ends: 693 [2024-11-24 00:53:52,832 INFO L226 Difference]: Without dead ends: 392 [2024-11-24 00:53:52,833 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:53:52,833 INFO L435 NwaCegarLoop]: 200 mSDtfsCounter, 76 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:52,834 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 702 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:53:52,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-11-24 00:53:52,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 265. [2024-11-24 00:53:52,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 233 states have (on average 1.2832618025751072) internal successors, (299), 234 states have internal predecessors, (299), 26 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-24 00:53:52,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 351 transitions. [2024-11-24 00:53:52,868 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 351 transitions. Word has length 158 [2024-11-24 00:53:52,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:52,868 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 351 transitions. [2024-11-24 00:53:52,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:52,869 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 351 transitions. [2024-11-24 00:53:52,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-24 00:53:52,871 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:52,872 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:52,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 00:53:52,872 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:52,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:52,873 INFO L85 PathProgramCache]: Analyzing trace with hash -752795295, now seen corresponding path program 1 times [2024-11-24 00:53:52,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:52,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120294710] [2024-11-24 00:53:52,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:52,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:53,104 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:53:53,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:53,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120294710] [2024-11-24 00:53:53,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120294710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:53:53,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:53:53,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:53:53,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514687872] [2024-11-24 00:53:53,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:53:53,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:53:53,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:53,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:53:53,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:53:53,107 INFO L87 Difference]: Start difference. First operand 265 states and 351 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:53,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:53,261 INFO L93 Difference]: Finished difference Result 616 states and 818 transitions. [2024-11-24 00:53:53,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:53:53,262 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 158 [2024-11-24 00:53:53,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:53,265 INFO L225 Difference]: With dead ends: 616 [2024-11-24 00:53:53,265 INFO L226 Difference]: Without dead ends: 354 [2024-11-24 00:53:53,266 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:53:53,267 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 52 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:53,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 942 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:53:53,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-24 00:53:53,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 302. [2024-11-24 00:53:53,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 270 states have (on average 1.2851851851851852) internal successors, (347), 271 states have internal predecessors, (347), 26 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-24 00:53:53,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 399 transitions. [2024-11-24 00:53:53,298 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 399 transitions. Word has length 158 [2024-11-24 00:53:53,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:53,299 INFO L471 AbstractCegarLoop]: Abstraction has 302 states and 399 transitions. [2024-11-24 00:53:53,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:53,299 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 399 transitions. [2024-11-24 00:53:53,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-24 00:53:53,302 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:53,302 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:53,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 00:53:53,303 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:53,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:53,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1008765421, now seen corresponding path program 1 times [2024-11-24 00:53:53,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:53,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924299358] [2024-11-24 00:53:53,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:53,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:54,436 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:53:54,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:54,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924299358] [2024-11-24 00:53:54,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924299358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:53:54,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:53:54,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-24 00:53:54,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181481585] [2024-11-24 00:53:54,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:53:54,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 00:53:54,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:54,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 00:53:54,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:53:54,439 INFO L87 Difference]: Start difference. First operand 302 states and 399 transitions. Second operand has 11 states, 10 states have (on average 6.2) internal successors, (62), 11 states have internal predecessors, (62), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-24 00:53:54,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:54,914 INFO L93 Difference]: Finished difference Result 609 states and 805 transitions. [2024-11-24 00:53:54,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:53:54,915 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.2) internal successors, (62), 11 states have internal predecessors, (62), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 159 [2024-11-24 00:53:54,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:54,918 INFO L225 Difference]: With dead ends: 609 [2024-11-24 00:53:54,918 INFO L226 Difference]: Without dead ends: 310 [2024-11-24 00:53:54,919 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2024-11-24 00:53:54,920 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 204 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:54,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 819 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:53:54,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-11-24 00:53:54,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 304. [2024-11-24 00:53:54,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 272 states have (on average 1.2830882352941178) internal successors, (349), 273 states have internal predecessors, (349), 26 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-24 00:53:54,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 401 transitions. [2024-11-24 00:53:54,951 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 401 transitions. Word has length 159 [2024-11-24 00:53:54,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:54,952 INFO L471 AbstractCegarLoop]: Abstraction has 304 states and 401 transitions. [2024-11-24 00:53:54,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.2) internal successors, (62), 11 states have internal predecessors, (62), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-24 00:53:54,952 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 401 transitions. [2024-11-24 00:53:54,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-24 00:53:54,955 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:54,955 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:54,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 00:53:54,956 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:54,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:54,956 INFO L85 PathProgramCache]: Analyzing trace with hash -502737119, now seen corresponding path program 1 times [2024-11-24 00:53:54,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:54,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873496705] [2024-11-24 00:53:54,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:54,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:55,403 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:53:55,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:55,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873496705] [2024-11-24 00:53:55,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873496705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:53:55,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:53:55,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:53:55,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104417247] [2024-11-24 00:53:55,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:53:55,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:53:55,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:55,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:53:55,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:53:55,406 INFO L87 Difference]: Start difference. First operand 304 states and 401 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:55,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:55,640 INFO L93 Difference]: Finished difference Result 832 states and 1088 transitions. [2024-11-24 00:53:55,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:53:55,641 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 160 [2024-11-24 00:53:55,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:55,645 INFO L225 Difference]: With dead ends: 832 [2024-11-24 00:53:55,645 INFO L226 Difference]: Without dead ends: 531 [2024-11-24 00:53:55,647 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:53:55,647 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 171 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:55,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 456 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:53:55,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2024-11-24 00:53:55,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 528. [2024-11-24 00:53:55,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 469 states have (on average 1.2579957356076759) internal successors, (590), 472 states have internal predecessors, (590), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 45 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-24 00:53:55,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 686 transitions. [2024-11-24 00:53:55,739 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 686 transitions. Word has length 160 [2024-11-24 00:53:55,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:55,740 INFO L471 AbstractCegarLoop]: Abstraction has 528 states and 686 transitions. [2024-11-24 00:53:55,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:55,741 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 686 transitions. [2024-11-24 00:53:55,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-24 00:53:55,744 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:55,744 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:55,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 00:53:55,745 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:55,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:55,746 INFO L85 PathProgramCache]: Analyzing trace with hash 198327459, now seen corresponding path program 1 times [2024-11-24 00:53:55,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:55,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048387435] [2024-11-24 00:53:55,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:55,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:57,073 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:53:57,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:57,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048387435] [2024-11-24 00:53:57,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048387435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:53:57,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:53:57,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-24 00:53:57,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393569500] [2024-11-24 00:53:57,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:53:57,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 00:53:57,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:57,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 00:53:57,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:53:57,076 INFO L87 Difference]: Start difference. First operand 528 states and 686 transitions. Second operand has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:57,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:57,805 INFO L93 Difference]: Finished difference Result 1348 states and 1738 transitions. [2024-11-24 00:53:57,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 00:53:57,808 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 160 [2024-11-24 00:53:57,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:57,813 INFO L225 Difference]: With dead ends: 1348 [2024-11-24 00:53:57,814 INFO L226 Difference]: Without dead ends: 823 [2024-11-24 00:53:57,816 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2024-11-24 00:53:57,817 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 254 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:57,817 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 1243 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 00:53:57,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2024-11-24 00:53:57,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 759. [2024-11-24 00:53:57,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 674 states have (on average 1.2433234421364985) internal successors, (838), 679 states have internal predecessors, (838), 68 states have call successors, (68), 16 states have call predecessors, (68), 16 states have return successors, (68), 63 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-24 00:53:57,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 974 transitions. [2024-11-24 00:53:57,915 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 974 transitions. Word has length 160 [2024-11-24 00:53:57,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:57,916 INFO L471 AbstractCegarLoop]: Abstraction has 759 states and 974 transitions. [2024-11-24 00:53:57,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:57,917 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 974 transitions. [2024-11-24 00:53:57,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-24 00:53:57,920 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:57,920 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:57,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 00:53:57,920 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:57,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:57,921 INFO L85 PathProgramCache]: Analyzing trace with hash -903166998, now seen corresponding path program 1 times [2024-11-24 00:53:57,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:57,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653995365] [2024-11-24 00:53:57,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:57,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:58,269 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:53:58,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:58,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653995365] [2024-11-24 00:53:58,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653995365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:53:58,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:53:58,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:53:58,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226486769] [2024-11-24 00:53:58,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:53:58,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:53:58,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:58,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:53:58,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:53:58,272 INFO L87 Difference]: Start difference. First operand 759 states and 974 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:58,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:58,438 INFO L93 Difference]: Finished difference Result 1511 states and 1936 transitions. [2024-11-24 00:53:58,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:53:58,439 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 160 [2024-11-24 00:53:58,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:58,444 INFO L225 Difference]: With dead ends: 1511 [2024-11-24 00:53:58,444 INFO L226 Difference]: Without dead ends: 755 [2024-11-24 00:53:58,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:53:58,447 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 47 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:58,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 632 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:53:58,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2024-11-24 00:53:58,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 751. [2024-11-24 00:53:58,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 666 states have (on average 1.2327327327327327) internal successors, (821), 671 states have internal predecessors, (821), 68 states have call successors, (68), 16 states have call predecessors, (68), 16 states have return successors, (68), 63 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-24 00:53:58,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 957 transitions. [2024-11-24 00:53:58,527 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 957 transitions. Word has length 160 [2024-11-24 00:53:58,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:58,528 INFO L471 AbstractCegarLoop]: Abstraction has 751 states and 957 transitions. [2024-11-24 00:53:58,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:58,528 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 957 transitions. [2024-11-24 00:53:58,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-24 00:53:58,531 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:58,532 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:58,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 00:53:58,532 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:58,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:58,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1446121962, now seen corresponding path program 1 times [2024-11-24 00:53:58,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:58,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597904021] [2024-11-24 00:53:58,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:58,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:58,865 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:53:58,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:58,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597904021] [2024-11-24 00:53:58,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597904021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:53:58,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:53:58,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:53:58,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773513020] [2024-11-24 00:53:58,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:53:58,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:53:58,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:58,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:53:58,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:53:58,867 INFO L87 Difference]: Start difference. First operand 751 states and 957 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:59,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:59,003 INFO L93 Difference]: Finished difference Result 1499 states and 1908 transitions. [2024-11-24 00:53:59,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:53:59,004 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 160 [2024-11-24 00:53:59,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:59,009 INFO L225 Difference]: With dead ends: 1499 [2024-11-24 00:53:59,010 INFO L226 Difference]: Without dead ends: 751 [2024-11-24 00:53:59,012 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:53:59,013 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 49 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:59,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 679 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:53:59,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2024-11-24 00:53:59,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 747. [2024-11-24 00:53:59,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 662 states have (on average 1.2280966767371602) internal successors, (813), 667 states have internal predecessors, (813), 68 states have call successors, (68), 16 states have call predecessors, (68), 16 states have return successors, (68), 63 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-24 00:53:59,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 949 transitions. [2024-11-24 00:53:59,130 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 949 transitions. Word has length 160 [2024-11-24 00:53:59,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:59,131 INFO L471 AbstractCegarLoop]: Abstraction has 747 states and 949 transitions. [2024-11-24 00:53:59,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:59,131 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 949 transitions. [2024-11-24 00:53:59,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-24 00:53:59,135 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:59,135 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:59,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 00:53:59,135 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:59,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:59,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1045692083, now seen corresponding path program 1 times [2024-11-24 00:53:59,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:59,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158332225] [2024-11-24 00:53:59,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:59,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:59,630 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:53:59,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:59,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158332225] [2024-11-24 00:53:59,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158332225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:53:59,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:53:59,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:53:59,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871427728] [2024-11-24 00:53:59,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:53:59,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:53:59,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:59,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:53:59,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:53:59,636 INFO L87 Difference]: Start difference. First operand 747 states and 949 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:59,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:59,794 INFO L93 Difference]: Finished difference Result 1710 states and 2168 transitions. [2024-11-24 00:53:59,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:53:59,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 160 [2024-11-24 00:53:59,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:59,800 INFO L225 Difference]: With dead ends: 1710 [2024-11-24 00:53:59,800 INFO L226 Difference]: Without dead ends: 966 [2024-11-24 00:53:59,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:53:59,802 INFO L435 NwaCegarLoop]: 226 mSDtfsCounter, 84 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:59,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 734 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:53:59,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2024-11-24 00:53:59,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 963. [2024-11-24 00:53:59,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 855 states have (on average 1.223391812865497) internal successors, (1046), 862 states have internal predecessors, (1046), 86 states have call successors, (86), 21 states have call predecessors, (86), 21 states have return successors, (86), 79 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-24 00:53:59,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1218 transitions. [2024-11-24 00:53:59,890 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1218 transitions. Word has length 160 [2024-11-24 00:53:59,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:59,891 INFO L471 AbstractCegarLoop]: Abstraction has 963 states and 1218 transitions. [2024-11-24 00:53:59,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:53:59,891 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1218 transitions. [2024-11-24 00:53:59,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-24 00:53:59,895 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:59,895 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:59,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-24 00:53:59,896 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:59,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:59,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1746756661, now seen corresponding path program 1 times [2024-11-24 00:53:59,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:59,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582598852] [2024-11-24 00:53:59,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:59,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:01,135 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:54:01,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:01,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582598852] [2024-11-24 00:54:01,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582598852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:01,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:01,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-24 00:54:01,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055894403] [2024-11-24 00:54:01,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:01,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 00:54:01,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:01,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 00:54:01,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:54:01,141 INFO L87 Difference]: Start difference. First operand 963 states and 1218 transitions. Second operand has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:01,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:01,909 INFO L93 Difference]: Finished difference Result 2103 states and 2653 transitions. [2024-11-24 00:54:01,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 00:54:01,913 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 160 [2024-11-24 00:54:01,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:01,921 INFO L225 Difference]: With dead ends: 2103 [2024-11-24 00:54:01,921 INFO L226 Difference]: Without dead ends: 1143 [2024-11-24 00:54:01,923 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2024-11-24 00:54:01,927 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 241 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 1871 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:01,927 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 1871 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 00:54:01,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2024-11-24 00:54:02,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 937. [2024-11-24 00:54:02,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 853 states have (on average 1.2203985932004688) internal successors, (1041), 858 states have internal predecessors, (1041), 66 states have call successors, (66), 17 states have call predecessors, (66), 17 states have return successors, (66), 61 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-24 00:54:02,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1173 transitions. [2024-11-24 00:54:02,035 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1173 transitions. Word has length 160 [2024-11-24 00:54:02,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:02,035 INFO L471 AbstractCegarLoop]: Abstraction has 937 states and 1173 transitions. [2024-11-24 00:54:02,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:02,036 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1173 transitions. [2024-11-24 00:54:02,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-24 00:54:02,039 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:02,040 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:02,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-24 00:54:02,040 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:02,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:02,041 INFO L85 PathProgramCache]: Analyzing trace with hash -877535951, now seen corresponding path program 1 times [2024-11-24 00:54:02,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:02,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700566532] [2024-11-24 00:54:02,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:02,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:02,384 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:54:02,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:02,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700566532] [2024-11-24 00:54:02,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700566532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:02,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:02,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:54:02,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365252579] [2024-11-24 00:54:02,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:02,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:54:02,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:02,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:54:02,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:54:02,387 INFO L87 Difference]: Start difference. First operand 937 states and 1173 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:02,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:02,588 INFO L93 Difference]: Finished difference Result 1997 states and 2522 transitions. [2024-11-24 00:54:02,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:54:02,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 160 [2024-11-24 00:54:02,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:02,598 INFO L225 Difference]: With dead ends: 1997 [2024-11-24 00:54:02,599 INFO L226 Difference]: Without dead ends: 1063 [2024-11-24 00:54:02,601 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:54:02,602 INFO L435 NwaCegarLoop]: 290 mSDtfsCounter, 141 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:02,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 998 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:54:02,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2024-11-24 00:54:02,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 898. [2024-11-24 00:54:02,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 898 states, 814 states have (on average 1.21990171990172) internal successors, (993), 819 states have internal predecessors, (993), 66 states have call successors, (66), 17 states have call predecessors, (66), 17 states have return successors, (66), 61 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-24 00:54:02,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1125 transitions. [2024-11-24 00:54:02,701 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1125 transitions. Word has length 160 [2024-11-24 00:54:02,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:02,702 INFO L471 AbstractCegarLoop]: Abstraction has 898 states and 1125 transitions. [2024-11-24 00:54:02,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:02,706 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1125 transitions. [2024-11-24 00:54:02,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-24 00:54:02,709 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:02,710 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:02,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-24 00:54:02,710 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:02,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:02,711 INFO L85 PathProgramCache]: Analyzing trace with hash -256326258, now seen corresponding path program 1 times [2024-11-24 00:54:02,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:02,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99749472] [2024-11-24 00:54:02,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:02,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:02,937 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:54:02,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:02,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99749472] [2024-11-24 00:54:02,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99749472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:02,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:02,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:54:02,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136103724] [2024-11-24 00:54:02,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:02,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:54:02,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:02,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:54:02,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:54:02,940 INFO L87 Difference]: Start difference. First operand 898 states and 1125 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:03,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:03,233 INFO L93 Difference]: Finished difference Result 2549 states and 3196 transitions. [2024-11-24 00:54:03,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:54:03,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 161 [2024-11-24 00:54:03,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:03,244 INFO L225 Difference]: With dead ends: 2549 [2024-11-24 00:54:03,244 INFO L226 Difference]: Without dead ends: 1654 [2024-11-24 00:54:03,246 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:54:03,248 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 112 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:03,249 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 435 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:54:03,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1654 states. [2024-11-24 00:54:03,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1654 to 1210. [2024-11-24 00:54:03,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1101 states have (on average 1.2270663033605813) internal successors, (1351), 1106 states have internal predecessors, (1351), 86 states have call successors, (86), 22 states have call predecessors, (86), 22 states have return successors, (86), 81 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-24 00:54:03,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1523 transitions. [2024-11-24 00:54:03,415 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1523 transitions. Word has length 161 [2024-11-24 00:54:03,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:03,416 INFO L471 AbstractCegarLoop]: Abstraction has 1210 states and 1523 transitions. [2024-11-24 00:54:03,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:03,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1523 transitions. [2024-11-24 00:54:03,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-24 00:54:03,420 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:03,421 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:03,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-24 00:54:03,421 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:03,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:03,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1267443508, now seen corresponding path program 1 times [2024-11-24 00:54:03,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:03,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908682768] [2024-11-24 00:54:03,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:03,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:03,826 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:54:03,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:03,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908682768] [2024-11-24 00:54:03,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908682768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:03,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:03,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:54:03,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754283291] [2024-11-24 00:54:03,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:03,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:54:03,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:03,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:54:03,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:54:03,830 INFO L87 Difference]: Start difference. First operand 1210 states and 1523 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:04,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:04,107 INFO L93 Difference]: Finished difference Result 2749 states and 3460 transitions. [2024-11-24 00:54:04,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:54:04,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 161 [2024-11-24 00:54:04,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:04,118 INFO L225 Difference]: With dead ends: 2749 [2024-11-24 00:54:04,118 INFO L226 Difference]: Without dead ends: 1844 [2024-11-24 00:54:04,120 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:54:04,121 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 82 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:04,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 707 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:54:04,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2024-11-24 00:54:04,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1440. [2024-11-24 00:54:04,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1331 states have (on average 1.2299023290758828) internal successors, (1637), 1336 states have internal predecessors, (1637), 86 states have call successors, (86), 22 states have call predecessors, (86), 22 states have return successors, (86), 81 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-24 00:54:04,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 1809 transitions. [2024-11-24 00:54:04,260 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 1809 transitions. Word has length 161 [2024-11-24 00:54:04,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:04,261 INFO L471 AbstractCegarLoop]: Abstraction has 1440 states and 1809 transitions. [2024-11-24 00:54:04,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:04,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 1809 transitions. [2024-11-24 00:54:04,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-24 00:54:04,265 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:04,265 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:04,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-24 00:54:04,266 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:04,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:04,266 INFO L85 PathProgramCache]: Analyzing trace with hash 22429252, now seen corresponding path program 1 times [2024-11-24 00:54:04,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:04,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133705791] [2024-11-24 00:54:04,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:04,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:04,650 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:54:04,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:04,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133705791] [2024-11-24 00:54:04,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133705791] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:04,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:04,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:54:04,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784004547] [2024-11-24 00:54:04,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:04,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:54:04,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:04,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:54:04,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:54:04,653 INFO L87 Difference]: Start difference. First operand 1440 states and 1809 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:05,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:05,022 INFO L93 Difference]: Finished difference Result 2770 states and 3494 transitions. [2024-11-24 00:54:05,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:54:05,023 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 162 [2024-11-24 00:54:05,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:05,032 INFO L225 Difference]: With dead ends: 2770 [2024-11-24 00:54:05,032 INFO L226 Difference]: Without dead ends: 1627 [2024-11-24 00:54:05,035 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:54:05,036 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 136 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:05,036 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1180 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:54:05,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2024-11-24 00:54:05,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1440. [2024-11-24 00:54:05,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1331 states have (on average 1.2178812922614575) internal successors, (1621), 1336 states have internal predecessors, (1621), 86 states have call successors, (86), 22 states have call predecessors, (86), 22 states have return successors, (86), 81 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-24 00:54:05,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 1793 transitions. [2024-11-24 00:54:05,165 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 1793 transitions. Word has length 162 [2024-11-24 00:54:05,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:05,166 INFO L471 AbstractCegarLoop]: Abstraction has 1440 states and 1793 transitions. [2024-11-24 00:54:05,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:05,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 1793 transitions. [2024-11-24 00:54:05,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-24 00:54:05,171 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:05,171 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:05,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-24 00:54:05,172 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:05,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:05,172 INFO L85 PathProgramCache]: Analyzing trace with hash 100967454, now seen corresponding path program 1 times [2024-11-24 00:54:05,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:05,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908855616] [2024-11-24 00:54:05,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:05,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:06,809 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 54 proven. 54 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2024-11-24 00:54:06,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:06,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908855616] [2024-11-24 00:54:06,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908855616] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:54:06,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282722456] [2024-11-24 00:54:06,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:06,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:06,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:54:06,812 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:54:06,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:54:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:07,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-24 00:54:07,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:54:08,442 INFO L349 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2024-11-24 00:54:08,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 22 [2024-11-24 00:54:08,865 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:54:08,865 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:54:08,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282722456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:08,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:54:08,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 24 [2024-11-24 00:54:08,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719933281] [2024-11-24 00:54:08,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:08,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 00:54:08,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:08,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 00:54:08,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=500, Unknown=0, NotChecked=0, Total=552 [2024-11-24 00:54:08,868 INFO L87 Difference]: Start difference. First operand 1440 states and 1793 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:10,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:10,324 INFO L93 Difference]: Finished difference Result 3192 states and 3983 transitions. [2024-11-24 00:54:10,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 00:54:10,325 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 162 [2024-11-24 00:54:10,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:10,338 INFO L225 Difference]: With dead ends: 3192 [2024-11-24 00:54:10,338 INFO L226 Difference]: Without dead ends: 2067 [2024-11-24 00:54:10,343 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2024-11-24 00:54:10,344 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 315 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:10,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 1316 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 00:54:10,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2067 states. [2024-11-24 00:54:10,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2067 to 1940. [2024-11-24 00:54:10,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1940 states, 1748 states have (on average 1.2019450800915332) internal successors, (2101), 1758 states have internal predecessors, (2101), 152 states have call successors, (152), 39 states have call predecessors, (152), 39 states have return successors, (152), 142 states have call predecessors, (152), 152 states have call successors, (152) [2024-11-24 00:54:10,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 2405 transitions. [2024-11-24 00:54:10,634 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 2405 transitions. Word has length 162 [2024-11-24 00:54:10,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:10,635 INFO L471 AbstractCegarLoop]: Abstraction has 1940 states and 2405 transitions. [2024-11-24 00:54:10,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:10,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 2405 transitions. [2024-11-24 00:54:10,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-24 00:54:10,642 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:10,643 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:10,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-24 00:54:10,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:10,848 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:10,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:10,849 INFO L85 PathProgramCache]: Analyzing trace with hash -708379172, now seen corresponding path program 1 times [2024-11-24 00:54:10,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:10,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492845886] [2024-11-24 00:54:10,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:10,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:11,165 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:54:11,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:11,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492845886] [2024-11-24 00:54:11,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492845886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:11,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:11,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:54:11,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312831754] [2024-11-24 00:54:11,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:11,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:54:11,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:11,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:54:11,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:54:11,168 INFO L87 Difference]: Start difference. First operand 1940 states and 2405 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:11,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:11,591 INFO L93 Difference]: Finished difference Result 4615 states and 5674 transitions. [2024-11-24 00:54:11,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:54:11,592 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 162 [2024-11-24 00:54:11,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:11,607 INFO L225 Difference]: With dead ends: 4615 [2024-11-24 00:54:11,607 INFO L226 Difference]: Without dead ends: 2990 [2024-11-24 00:54:11,610 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:54:11,612 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 53 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:11,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 650 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:54:11,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2024-11-24 00:54:11,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 2862. [2024-11-24 00:54:11,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2862 states, 2670 states have (on average 1.195880149812734) internal successors, (3193), 2680 states have internal predecessors, (3193), 152 states have call successors, (152), 39 states have call predecessors, (152), 39 states have return successors, (152), 142 states have call predecessors, (152), 152 states have call successors, (152) [2024-11-24 00:54:11,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 3497 transitions. [2024-11-24 00:54:11,875 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 3497 transitions. Word has length 162 [2024-11-24 00:54:11,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:11,875 INFO L471 AbstractCegarLoop]: Abstraction has 2862 states and 3497 transitions. [2024-11-24 00:54:11,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:11,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 3497 transitions. [2024-11-24 00:54:11,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-24 00:54:11,881 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:11,882 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:11,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-24 00:54:11,882 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:11,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:11,883 INFO L85 PathProgramCache]: Analyzing trace with hash 2109697224, now seen corresponding path program 1 times [2024-11-24 00:54:11,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:11,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33909244] [2024-11-24 00:54:11,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:11,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:12,411 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:54:12,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:12,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33909244] [2024-11-24 00:54:12,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33909244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:12,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:12,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:54:12,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447571355] [2024-11-24 00:54:12,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:12,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:54:12,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:12,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:54:12,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:54:12,413 INFO L87 Difference]: Start difference. First operand 2862 states and 3497 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:13,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:13,071 INFO L93 Difference]: Finished difference Result 5688 states and 6973 transitions. [2024-11-24 00:54:13,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:54:13,072 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 162 [2024-11-24 00:54:13,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:13,087 INFO L225 Difference]: With dead ends: 5688 [2024-11-24 00:54:13,088 INFO L226 Difference]: Without dead ends: 3235 [2024-11-24 00:54:13,092 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:54:13,093 INFO L435 NwaCegarLoop]: 271 mSDtfsCounter, 283 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:13,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 819 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:54:13,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2024-11-24 00:54:13,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 2981. [2024-11-24 00:54:13,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2981 states, 2753 states have (on average 1.1565564838358156) internal successors, (3184), 2765 states have internal predecessors, (3184), 180 states have call successors, (180), 47 states have call predecessors, (180), 47 states have return successors, (180), 168 states have call predecessors, (180), 180 states have call successors, (180) [2024-11-24 00:54:13,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 3544 transitions. [2024-11-24 00:54:13,381 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 3544 transitions. Word has length 162 [2024-11-24 00:54:13,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:13,382 INFO L471 AbstractCegarLoop]: Abstraction has 2981 states and 3544 transitions. [2024-11-24 00:54:13,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:13,383 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 3544 transitions. [2024-11-24 00:54:13,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-24 00:54:13,388 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:13,388 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:13,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-24 00:54:13,389 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:13,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:13,389 INFO L85 PathProgramCache]: Analyzing trace with hash 163007068, now seen corresponding path program 1 times [2024-11-24 00:54:13,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:13,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031402467] [2024-11-24 00:54:13,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:13,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:13,689 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:54:13,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:13,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031402467] [2024-11-24 00:54:13,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031402467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:13,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:13,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:54:13,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549425407] [2024-11-24 00:54:13,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:13,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:54:13,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:13,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:54:13,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:54:13,692 INFO L87 Difference]: Start difference. First operand 2981 states and 3544 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:14,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:14,079 INFO L93 Difference]: Finished difference Result 5043 states and 5988 transitions. [2024-11-24 00:54:14,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:54:14,080 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 162 [2024-11-24 00:54:14,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:14,091 INFO L225 Difference]: With dead ends: 5043 [2024-11-24 00:54:14,091 INFO L226 Difference]: Without dead ends: 3130 [2024-11-24 00:54:14,094 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:54:14,095 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 51 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:14,096 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 868 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:54:14,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3130 states. [2024-11-24 00:54:14,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3130 to 2981. [2024-11-24 00:54:14,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2981 states, 2753 states have (on average 1.154013803123865) internal successors, (3177), 2765 states have internal predecessors, (3177), 180 states have call successors, (180), 47 states have call predecessors, (180), 47 states have return successors, (180), 168 states have call predecessors, (180), 180 states have call successors, (180) [2024-11-24 00:54:14,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 3537 transitions. [2024-11-24 00:54:14,352 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 3537 transitions. Word has length 162 [2024-11-24 00:54:14,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:14,353 INFO L471 AbstractCegarLoop]: Abstraction has 2981 states and 3537 transitions. [2024-11-24 00:54:14,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:14,354 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 3537 transitions. [2024-11-24 00:54:14,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-24 00:54:14,361 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:14,362 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:14,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-24 00:54:14,362 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:14,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:14,363 INFO L85 PathProgramCache]: Analyzing trace with hash -646339558, now seen corresponding path program 1 times [2024-11-24 00:54:14,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:14,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204370701] [2024-11-24 00:54:14,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:14,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:15,747 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 54 proven. 54 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2024-11-24 00:54:15,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:15,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204370701] [2024-11-24 00:54:15,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204370701] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:54:15,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341945203] [2024-11-24 00:54:15,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:15,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:15,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:54:15,750 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:54:15,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:54:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:16,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-24 00:54:16,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:54:17,250 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2024-11-24 00:54:17,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 81 treesize of output 84 [2024-11-24 00:54:17,317 INFO L349 Elim1Store]: treesize reduction 48, result has 15.8 percent of original size [2024-11-24 00:54:17,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 82 treesize of output 101 [2024-11-24 00:54:17,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 11 [2024-11-24 00:54:17,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 53 [2024-11-24 00:54:17,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 39 [2024-11-24 00:54:18,102 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:54:18,102 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:54:18,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341945203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:18,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:54:18,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 25 [2024-11-24 00:54:18,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905121153] [2024-11-24 00:54:18,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:18,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 00:54:18,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:18,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 00:54:18,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2024-11-24 00:54:18,105 INFO L87 Difference]: Start difference. First operand 2981 states and 3537 transitions. Second operand has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:20,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:20,010 INFO L93 Difference]: Finished difference Result 5854 states and 6933 transitions. [2024-11-24 00:54:20,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 00:54:20,011 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 162 [2024-11-24 00:54:20,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:20,041 INFO L225 Difference]: With dead ends: 5854 [2024-11-24 00:54:20,045 INFO L226 Difference]: Without dead ends: 3941 [2024-11-24 00:54:20,052 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=120, Invalid=1070, Unknown=0, NotChecked=0, Total=1190 [2024-11-24 00:54:20,053 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 252 mSDsluCounter, 1625 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:20,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 1875 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-24 00:54:20,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2024-11-24 00:54:20,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 3922. [2024-11-24 00:54:20,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3922 states, 3595 states have (on average 1.1510431154381084) internal successors, (4138), 3614 states have internal predecessors, (4138), 258 states have call successors, (258), 68 states have call predecessors, (258), 68 states have return successors, (258), 239 states have call predecessors, (258), 258 states have call successors, (258) [2024-11-24 00:54:20,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3922 states to 3922 states and 4654 transitions. [2024-11-24 00:54:20,425 INFO L78 Accepts]: Start accepts. Automaton has 3922 states and 4654 transitions. Word has length 162 [2024-11-24 00:54:20,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:20,425 INFO L471 AbstractCegarLoop]: Abstraction has 3922 states and 4654 transitions. [2024-11-24 00:54:20,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:20,426 INFO L276 IsEmpty]: Start isEmpty. Operand 3922 states and 4654 transitions. [2024-11-24 00:54:20,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-24 00:54:20,431 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:20,431 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:20,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 00:54:20,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-24 00:54:20,635 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:20,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:20,636 INFO L85 PathProgramCache]: Analyzing trace with hash -331515133, now seen corresponding path program 1 times [2024-11-24 00:54:20,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:20,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490968873] [2024-11-24 00:54:20,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:20,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:21,625 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:54:21,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:21,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490968873] [2024-11-24 00:54:21,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490968873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:21,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:21,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-24 00:54:21,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991118167] [2024-11-24 00:54:21,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:21,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 00:54:21,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:21,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 00:54:21,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:54:21,628 INFO L87 Difference]: Start difference. First operand 3922 states and 4654 transitions. Second operand has 12 states, 11 states have (on average 5.909090909090909) internal successors, (65), 12 states have internal predecessors, (65), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-24 00:54:22,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:22,650 INFO L93 Difference]: Finished difference Result 6186 states and 7347 transitions. [2024-11-24 00:54:22,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 00:54:22,651 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.909090909090909) internal successors, (65), 12 states have internal predecessors, (65), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 162 [2024-11-24 00:54:22,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:22,664 INFO L225 Difference]: With dead ends: 6186 [2024-11-24 00:54:22,664 INFO L226 Difference]: Without dead ends: 3914 [2024-11-24 00:54:22,669 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2024-11-24 00:54:22,670 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 293 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:22,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 947 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 00:54:22,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3914 states. [2024-11-24 00:54:23,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3914 to 3794. [2024-11-24 00:54:23,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3794 states, 3467 states have (on average 1.1468128064609173) internal successors, (3976), 3486 states have internal predecessors, (3976), 258 states have call successors, (258), 68 states have call predecessors, (258), 68 states have return successors, (258), 239 states have call predecessors, (258), 258 states have call successors, (258) [2024-11-24 00:54:23,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3794 states to 3794 states and 4492 transitions. [2024-11-24 00:54:23,038 INFO L78 Accepts]: Start accepts. Automaton has 3794 states and 4492 transitions. Word has length 162 [2024-11-24 00:54:23,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:23,039 INFO L471 AbstractCegarLoop]: Abstraction has 3794 states and 4492 transitions. [2024-11-24 00:54:23,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.909090909090909) internal successors, (65), 12 states have internal predecessors, (65), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-24 00:54:23,039 INFO L276 IsEmpty]: Start isEmpty. Operand 3794 states and 4492 transitions. [2024-11-24 00:54:23,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-24 00:54:23,043 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:23,044 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:23,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-24 00:54:23,044 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:23,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:23,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1982343074, now seen corresponding path program 1 times [2024-11-24 00:54:23,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:23,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236957919] [2024-11-24 00:54:23,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:23,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:23,947 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 54 proven. 54 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2024-11-24 00:54:23,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:23,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236957919] [2024-11-24 00:54:23,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236957919] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:54:23,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661414359] [2024-11-24 00:54:23,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:23,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:23,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:54:23,951 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:54:23,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:54:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:24,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-24 00:54:24,287 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:54:24,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 00:54:25,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-24 00:54:25,414 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2024-11-24 00:54:25,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 76 [2024-11-24 00:54:25,484 INFO L349 Elim1Store]: treesize reduction 44, result has 17.0 percent of original size [2024-11-24 00:54:25,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 93 [2024-11-24 00:54:25,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 11 [2024-11-24 00:54:25,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2024-11-24 00:54:25,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 29 [2024-11-24 00:54:26,095 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2024-11-24 00:54:26,095 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:54:26,631 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:54:26,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661414359] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 00:54:26,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:54:26,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13, 11] total 24 [2024-11-24 00:54:26,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637001618] [2024-11-24 00:54:26,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:26,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:54:26,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:26,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:54:26,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2024-11-24 00:54:26,634 INFO L87 Difference]: Start difference. First operand 3794 states and 4492 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:27,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:27,482 INFO L93 Difference]: Finished difference Result 5784 states and 6841 transitions. [2024-11-24 00:54:27,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:54:27,487 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 162 [2024-11-24 00:54:27,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:27,511 INFO L225 Difference]: With dead ends: 5784 [2024-11-24 00:54:27,516 INFO L226 Difference]: Without dead ends: 3955 [2024-11-24 00:54:27,518 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2024-11-24 00:54:27,519 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 53 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:27,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 988 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:54:27,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2024-11-24 00:54:27,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3264. [2024-11-24 00:54:27,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3264 states, 3038 states have (on average 1.1497695852534562) internal successors, (3493), 3051 states have internal predecessors, (3493), 178 states have call successors, (178), 47 states have call predecessors, (178), 47 states have return successors, (178), 165 states have call predecessors, (178), 178 states have call successors, (178) [2024-11-24 00:54:27,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3264 states to 3264 states and 3849 transitions. [2024-11-24 00:54:27,877 INFO L78 Accepts]: Start accepts. Automaton has 3264 states and 3849 transitions. Word has length 162 [2024-11-24 00:54:27,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:27,877 INFO L471 AbstractCegarLoop]: Abstraction has 3264 states and 3849 transitions. [2024-11-24 00:54:27,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:27,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3264 states and 3849 transitions. [2024-11-24 00:54:27,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-24 00:54:27,882 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:27,882 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:27,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 00:54:28,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:28,084 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:28,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:28,085 INFO L85 PathProgramCache]: Analyzing trace with hash 756756521, now seen corresponding path program 1 times [2024-11-24 00:54:28,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:28,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905003782] [2024-11-24 00:54:28,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:28,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:29,059 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:54:29,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:29,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905003782] [2024-11-24 00:54:29,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905003782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:29,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:29,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 00:54:29,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344367249] [2024-11-24 00:54:29,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:29,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:54:29,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:29,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:54:29,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:54:29,062 INFO L87 Difference]: Start difference. First operand 3264 states and 3849 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:29,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:29,753 INFO L93 Difference]: Finished difference Result 5541 states and 6573 transitions. [2024-11-24 00:54:29,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 00:54:29,754 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 164 [2024-11-24 00:54:29,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:29,765 INFO L225 Difference]: With dead ends: 5541 [2024-11-24 00:54:29,766 INFO L226 Difference]: Without dead ends: 3597 [2024-11-24 00:54:29,770 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2024-11-24 00:54:29,772 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 128 mSDsluCounter, 1868 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2128 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:29,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2128 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:54:29,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3597 states. [2024-11-24 00:54:30,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3597 to 3288. [2024-11-24 00:54:30,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3288 states, 3062 states have (on average 1.1485956890920967) internal successors, (3517), 3075 states have internal predecessors, (3517), 178 states have call successors, (178), 47 states have call predecessors, (178), 47 states have return successors, (178), 165 states have call predecessors, (178), 178 states have call successors, (178) [2024-11-24 00:54:30,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3288 states to 3288 states and 3873 transitions. [2024-11-24 00:54:30,076 INFO L78 Accepts]: Start accepts. Automaton has 3288 states and 3873 transitions. Word has length 164 [2024-11-24 00:54:30,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:30,077 INFO L471 AbstractCegarLoop]: Abstraction has 3288 states and 3873 transitions. [2024-11-24 00:54:30,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:30,077 INFO L276 IsEmpty]: Start isEmpty. Operand 3288 states and 3873 transitions. [2024-11-24 00:54:30,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-24 00:54:30,082 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:30,082 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:30,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-24 00:54:30,082 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:30,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:30,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1457821099, now seen corresponding path program 1 times [2024-11-24 00:54:30,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:30,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282515531] [2024-11-24 00:54:30,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:30,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:30,403 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:54:30,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:30,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282515531] [2024-11-24 00:54:30,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282515531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:30,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:30,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:54:30,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750933669] [2024-11-24 00:54:30,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:30,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:54:30,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:30,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:54:30,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:54:30,406 INFO L87 Difference]: Start difference. First operand 3288 states and 3873 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:30,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:30,901 INFO L93 Difference]: Finished difference Result 5458 states and 6435 transitions. [2024-11-24 00:54:30,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:54:30,901 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 164 [2024-11-24 00:54:30,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:30,913 INFO L225 Difference]: With dead ends: 5458 [2024-11-24 00:54:30,914 INFO L226 Difference]: Without dead ends: 3482 [2024-11-24 00:54:30,917 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:54:30,918 INFO L435 NwaCegarLoop]: 238 mSDtfsCounter, 88 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:30,918 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 752 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:54:30,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3482 states. [2024-11-24 00:54:31,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3482 to 3270. [2024-11-24 00:54:31,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3270 states, 3044 states have (on average 1.1475032851511169) internal successors, (3493), 3057 states have internal predecessors, (3493), 178 states have call successors, (178), 47 states have call predecessors, (178), 47 states have return successors, (178), 165 states have call predecessors, (178), 178 states have call successors, (178) [2024-11-24 00:54:31,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3270 states to 3270 states and 3849 transitions. [2024-11-24 00:54:31,207 INFO L78 Accepts]: Start accepts. Automaton has 3270 states and 3849 transitions. Word has length 164 [2024-11-24 00:54:31,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:31,208 INFO L471 AbstractCegarLoop]: Abstraction has 3270 states and 3849 transitions. [2024-11-24 00:54:31,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:31,208 INFO L276 IsEmpty]: Start isEmpty. Operand 3270 states and 3849 transitions. [2024-11-24 00:54:31,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-24 00:54:31,212 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:31,212 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:31,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-24 00:54:31,213 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:31,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:31,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1047824368, now seen corresponding path program 1 times [2024-11-24 00:54:31,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:31,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311579657] [2024-11-24 00:54:31,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:31,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:31,474 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-24 00:54:31,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:31,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311579657] [2024-11-24 00:54:31,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311579657] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:54:31,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891705459] [2024-11-24 00:54:31,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:31,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:31,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:54:31,477 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:54:31,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 00:54:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:31,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 00:54:31,839 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:54:31,893 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:54:31,893 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:54:31,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891705459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:31,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:54:31,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 11 [2024-11-24 00:54:31,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096935137] [2024-11-24 00:54:31,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:31,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:54:31,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:31,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:54:31,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:54:31,895 INFO L87 Difference]: Start difference. First operand 3270 states and 3849 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:32,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:32,231 INFO L93 Difference]: Finished difference Result 3328 states and 3920 transitions. [2024-11-24 00:54:32,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:54:32,232 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 164 [2024-11-24 00:54:32,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:32,241 INFO L225 Difference]: With dead ends: 3328 [2024-11-24 00:54:32,241 INFO L226 Difference]: Without dead ends: 3326 [2024-11-24 00:54:32,243 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:54:32,243 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 0 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:32,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 730 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:54:32,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3326 states. [2024-11-24 00:54:32,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3326 to 3326. [2024-11-24 00:54:32,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3326 states, 3100 states have (on average 1.1448387096774193) internal successors, (3549), 3113 states have internal predecessors, (3549), 178 states have call successors, (178), 47 states have call predecessors, (178), 47 states have return successors, (178), 165 states have call predecessors, (178), 178 states have call successors, (178) [2024-11-24 00:54:32,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3326 states to 3326 states and 3905 transitions. [2024-11-24 00:54:32,541 INFO L78 Accepts]: Start accepts. Automaton has 3326 states and 3905 transitions. Word has length 164 [2024-11-24 00:54:32,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:32,542 INFO L471 AbstractCegarLoop]: Abstraction has 3326 states and 3905 transitions. [2024-11-24 00:54:32,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:32,542 INFO L276 IsEmpty]: Start isEmpty. Operand 3326 states and 3905 transitions. [2024-11-24 00:54:32,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-24 00:54:32,546 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:32,546 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:32,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-24 00:54:32,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:32,747 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:32,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:32,747 INFO L85 PathProgramCache]: Analyzing trace with hash -2135546323, now seen corresponding path program 1 times [2024-11-24 00:54:32,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:32,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89250492] [2024-11-24 00:54:32,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:32,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:33,966 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:54:33,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:33,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89250492] [2024-11-24 00:54:33,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89250492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:33,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:33,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-24 00:54:33,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927367551] [2024-11-24 00:54:33,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:33,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 00:54:33,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:33,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 00:54:33,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:54:33,968 INFO L87 Difference]: Start difference. First operand 3326 states and 3905 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:34,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:34,712 INFO L93 Difference]: Finished difference Result 5644 states and 6632 transitions. [2024-11-24 00:54:34,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 00:54:34,712 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 164 [2024-11-24 00:54:34,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:34,724 INFO L225 Difference]: With dead ends: 5644 [2024-11-24 00:54:34,724 INFO L226 Difference]: Without dead ends: 3656 [2024-11-24 00:54:34,728 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-11-24 00:54:34,729 INFO L435 NwaCegarLoop]: 237 mSDtfsCounter, 224 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:34,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 1627 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:54:34,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3656 states. [2024-11-24 00:54:34,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3656 to 3196. [2024-11-24 00:54:34,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3196 states, 2970 states have (on average 1.144107744107744) internal successors, (3398), 2983 states have internal predecessors, (3398), 178 states have call successors, (178), 47 states have call predecessors, (178), 47 states have return successors, (178), 165 states have call predecessors, (178), 178 states have call successors, (178) [2024-11-24 00:54:34,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3196 states to 3196 states and 3754 transitions. [2024-11-24 00:54:34,996 INFO L78 Accepts]: Start accepts. Automaton has 3196 states and 3754 transitions. Word has length 164 [2024-11-24 00:54:34,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:34,997 INFO L471 AbstractCegarLoop]: Abstraction has 3196 states and 3754 transitions. [2024-11-24 00:54:34,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:34,997 INFO L276 IsEmpty]: Start isEmpty. Operand 3196 states and 3754 transitions. [2024-11-24 00:54:35,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-24 00:54:35,001 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:35,001 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:35,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-24 00:54:35,001 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:35,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:35,002 INFO L85 PathProgramCache]: Analyzing trace with hash -588988097, now seen corresponding path program 1 times [2024-11-24 00:54:35,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:35,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859514414] [2024-11-24 00:54:35,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:35,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:36,152 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:54:36,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:36,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859514414] [2024-11-24 00:54:36,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859514414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:36,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:36,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-24 00:54:36,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492279979] [2024-11-24 00:54:36,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:36,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 00:54:36,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:36,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 00:54:36,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:54:36,154 INFO L87 Difference]: Start difference. First operand 3196 states and 3754 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:37,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:37,259 INFO L93 Difference]: Finished difference Result 5126 states and 6010 transitions. [2024-11-24 00:54:37,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 00:54:37,260 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 164 [2024-11-24 00:54:37,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:37,271 INFO L225 Difference]: With dead ends: 5126 [2024-11-24 00:54:37,271 INFO L226 Difference]: Without dead ends: 3216 [2024-11-24 00:54:37,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-11-24 00:54:37,276 INFO L435 NwaCegarLoop]: 258 mSDtfsCounter, 221 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:37,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 2012 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:54:37,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3216 states. [2024-11-24 00:54:37,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3216 to 2968. [2024-11-24 00:54:37,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2968 states, 2772 states have (on average 1.1443001443001444) internal successors, (3172), 2783 states have internal predecessors, (3172), 154 states have call successors, (154), 41 states have call predecessors, (154), 41 states have return successors, (154), 143 states have call predecessors, (154), 154 states have call successors, (154) [2024-11-24 00:54:37,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2968 states to 2968 states and 3480 transitions. [2024-11-24 00:54:37,544 INFO L78 Accepts]: Start accepts. Automaton has 2968 states and 3480 transitions. Word has length 164 [2024-11-24 00:54:37,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:37,545 INFO L471 AbstractCegarLoop]: Abstraction has 2968 states and 3480 transitions. [2024-11-24 00:54:37,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:37,545 INFO L276 IsEmpty]: Start isEmpty. Operand 2968 states and 3480 transitions. [2024-11-24 00:54:37,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-24 00:54:37,548 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:37,548 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:37,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-24 00:54:37,549 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:37,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:37,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1991652549, now seen corresponding path program 1 times [2024-11-24 00:54:37,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:37,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335035475] [2024-11-24 00:54:37,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:37,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:37,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:38,555 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:54:38,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:38,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335035475] [2024-11-24 00:54:38,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335035475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:38,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:38,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 00:54:38,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101109586] [2024-11-24 00:54:38,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:38,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:54:38,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:38,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:54:38,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:54:38,559 INFO L87 Difference]: Start difference. First operand 2968 states and 3480 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:39,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:39,232 INFO L93 Difference]: Finished difference Result 4878 states and 5744 transitions. [2024-11-24 00:54:39,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 00:54:39,233 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 164 [2024-11-24 00:54:39,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:39,244 INFO L225 Difference]: With dead ends: 4878 [2024-11-24 00:54:39,245 INFO L226 Difference]: Without dead ends: 3099 [2024-11-24 00:54:39,248 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2024-11-24 00:54:39,249 INFO L435 NwaCegarLoop]: 277 mSDtfsCounter, 128 mSDsluCounter, 1972 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2249 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:39,249 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2249 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:54:39,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3099 states. [2024-11-24 00:54:39,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3099 to 2992. [2024-11-24 00:54:39,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2992 states, 2796 states have (on average 1.1430615164520743) internal successors, (3196), 2807 states have internal predecessors, (3196), 154 states have call successors, (154), 41 states have call predecessors, (154), 41 states have return successors, (154), 143 states have call predecessors, (154), 154 states have call successors, (154) [2024-11-24 00:54:39,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2992 states to 2992 states and 3504 transitions. [2024-11-24 00:54:39,502 INFO L78 Accepts]: Start accepts. Automaton has 2992 states and 3504 transitions. Word has length 164 [2024-11-24 00:54:39,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:39,503 INFO L471 AbstractCegarLoop]: Abstraction has 2992 states and 3504 transitions. [2024-11-24 00:54:39,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:39,503 INFO L276 IsEmpty]: Start isEmpty. Operand 2992 states and 3504 transitions. [2024-11-24 00:54:39,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-24 00:54:39,506 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:39,506 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:39,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-24 00:54:39,506 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:39,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:39,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1290587971, now seen corresponding path program 1 times [2024-11-24 00:54:39,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:39,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730308914] [2024-11-24 00:54:39,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:39,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:39,821 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:54:39,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:39,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730308914] [2024-11-24 00:54:39,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730308914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:39,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:39,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:54:39,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365228665] [2024-11-24 00:54:39,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:39,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:54:39,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:39,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:54:39,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:54:39,824 INFO L87 Difference]: Start difference. First operand 2992 states and 3504 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:40,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:40,156 INFO L93 Difference]: Finished difference Result 4789 states and 5595 transitions. [2024-11-24 00:54:40,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:54:40,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 164 [2024-11-24 00:54:40,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:40,166 INFO L225 Difference]: With dead ends: 4789 [2024-11-24 00:54:40,167 INFO L226 Difference]: Without dead ends: 2978 [2024-11-24 00:54:40,170 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:54:40,170 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 78 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:40,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 664 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:54:40,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2024-11-24 00:54:40,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 2748. [2024-11-24 00:54:40,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2748 states, 2601 states have (on average 1.1430219146482121) internal successors, (2973), 2608 states have internal predecessors, (2973), 114 states have call successors, (114), 32 states have call predecessors, (114), 32 states have return successors, (114), 107 states have call predecessors, (114), 114 states have call successors, (114) [2024-11-24 00:54:40,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2748 states to 2748 states and 3201 transitions. [2024-11-24 00:54:40,369 INFO L78 Accepts]: Start accepts. Automaton has 2748 states and 3201 transitions. Word has length 164 [2024-11-24 00:54:40,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:40,369 INFO L471 AbstractCegarLoop]: Abstraction has 2748 states and 3201 transitions. [2024-11-24 00:54:40,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:40,369 INFO L276 IsEmpty]: Start isEmpty. Operand 2748 states and 3201 transitions. [2024-11-24 00:54:40,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-24 00:54:40,372 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:40,372 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:40,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-24 00:54:40,373 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:40,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:40,373 INFO L85 PathProgramCache]: Analyzing trace with hash 391664693, now seen corresponding path program 1 times [2024-11-24 00:54:40,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:40,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728908118] [2024-11-24 00:54:40,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:40,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:41,085 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:54:41,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:41,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728908118] [2024-11-24 00:54:41,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728908118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:41,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:41,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:54:41,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870267127] [2024-11-24 00:54:41,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:41,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:54:41,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:41,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:54:41,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:54:41,088 INFO L87 Difference]: Start difference. First operand 2748 states and 3201 transitions. Second operand has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-24 00:54:41,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:41,979 INFO L93 Difference]: Finished difference Result 6957 states and 8061 transitions. [2024-11-24 00:54:41,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:54:41,980 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 166 [2024-11-24 00:54:41,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:41,996 INFO L225 Difference]: With dead ends: 6957 [2024-11-24 00:54:41,996 INFO L226 Difference]: Without dead ends: 5222 [2024-11-24 00:54:42,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:54:42,001 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 402 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:42,001 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 637 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:54:42,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5222 states. [2024-11-24 00:54:42,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5222 to 5216. [2024-11-24 00:54:42,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5216 states, 4997 states have (on average 1.1376826095657395) internal successors, (5685), 5012 states have internal predecessors, (5685), 170 states have call successors, (170), 48 states have call predecessors, (170), 48 states have return successors, (170), 155 states have call predecessors, (170), 170 states have call successors, (170) [2024-11-24 00:54:42,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5216 states to 5216 states and 6025 transitions. [2024-11-24 00:54:42,456 INFO L78 Accepts]: Start accepts. Automaton has 5216 states and 6025 transitions. Word has length 166 [2024-11-24 00:54:42,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:42,456 INFO L471 AbstractCegarLoop]: Abstraction has 5216 states and 6025 transitions. [2024-11-24 00:54:42,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-24 00:54:42,457 INFO L276 IsEmpty]: Start isEmpty. Operand 5216 states and 6025 transitions. [2024-11-24 00:54:42,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-24 00:54:42,466 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:42,466 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:42,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-24 00:54:42,467 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:42,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:42,470 INFO L85 PathProgramCache]: Analyzing trace with hash -2059616136, now seen corresponding path program 1 times [2024-11-24 00:54:42,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:42,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560582628] [2024-11-24 00:54:42,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:42,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:42,887 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:54:42,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:42,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560582628] [2024-11-24 00:54:42,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560582628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:42,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:42,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:54:42,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702616725] [2024-11-24 00:54:42,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:42,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:54:42,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:42,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:54:42,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:54:42,890 INFO L87 Difference]: Start difference. First operand 5216 states and 6025 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:43,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:43,519 INFO L93 Difference]: Finished difference Result 7889 states and 9110 transitions. [2024-11-24 00:54:43,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 00:54:43,520 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 167 [2024-11-24 00:54:43,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:43,541 INFO L225 Difference]: With dead ends: 7889 [2024-11-24 00:54:43,541 INFO L226 Difference]: Without dead ends: 7887 [2024-11-24 00:54:43,544 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:54:43,544 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 101 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:43,545 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 1656 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:54:43,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7887 states. [2024-11-24 00:54:44,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7887 to 7444. [2024-11-24 00:54:44,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7444 states, 7225 states have (on average 1.1395155709342562) internal successors, (8233), 7240 states have internal predecessors, (8233), 170 states have call successors, (170), 48 states have call predecessors, (170), 48 states have return successors, (170), 155 states have call predecessors, (170), 170 states have call successors, (170) [2024-11-24 00:54:44,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7444 states to 7444 states and 8573 transitions. [2024-11-24 00:54:44,055 INFO L78 Accepts]: Start accepts. Automaton has 7444 states and 8573 transitions. Word has length 167 [2024-11-24 00:54:44,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:44,056 INFO L471 AbstractCegarLoop]: Abstraction has 7444 states and 8573 transitions. [2024-11-24 00:54:44,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:44,056 INFO L276 IsEmpty]: Start isEmpty. Operand 7444 states and 8573 transitions. [2024-11-24 00:54:44,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-24 00:54:44,063 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:44,064 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:44,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-24 00:54:44,064 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:44,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:44,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1840984374, now seen corresponding path program 1 times [2024-11-24 00:54:44,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:44,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321956239] [2024-11-24 00:54:44,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:44,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:44,951 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-24 00:54:44,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:44,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321956239] [2024-11-24 00:54:44,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321956239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:44,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:44,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 00:54:44,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143058736] [2024-11-24 00:54:44,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:44,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:54:44,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:44,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:54:44,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:54:44,954 INFO L87 Difference]: Start difference. First operand 7444 states and 8573 transitions. Second operand has 9 states, 8 states have (on average 8.75) internal successors, (70), 9 states have internal predecessors, (70), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-24 00:54:46,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:46,285 INFO L93 Difference]: Finished difference Result 12214 states and 14066 transitions. [2024-11-24 00:54:46,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:54:46,286 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 9 states have internal predecessors, (70), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 167 [2024-11-24 00:54:46,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:46,309 INFO L225 Difference]: With dead ends: 12214 [2024-11-24 00:54:46,309 INFO L226 Difference]: Without dead ends: 7667 [2024-11-24 00:54:46,315 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-24 00:54:46,316 INFO L435 NwaCegarLoop]: 244 mSDtfsCounter, 188 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:46,316 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 1166 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:54:46,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7667 states. [2024-11-24 00:54:46,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7667 to 7288. [2024-11-24 00:54:46,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7288 states, 7103 states have (on average 1.1396592988877938) internal successors, (8095), 7114 states have internal predecessors, (8095), 142 states have call successors, (142), 42 states have call predecessors, (142), 42 states have return successors, (142), 131 states have call predecessors, (142), 142 states have call successors, (142) [2024-11-24 00:54:46,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7288 states to 7288 states and 8379 transitions. [2024-11-24 00:54:46,758 INFO L78 Accepts]: Start accepts. Automaton has 7288 states and 8379 transitions. Word has length 167 [2024-11-24 00:54:46,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:46,759 INFO L471 AbstractCegarLoop]: Abstraction has 7288 states and 8379 transitions. [2024-11-24 00:54:46,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 9 states have internal predecessors, (70), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-24 00:54:46,759 INFO L276 IsEmpty]: Start isEmpty. Operand 7288 states and 8379 transitions. [2024-11-24 00:54:46,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2024-11-24 00:54:46,767 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:46,767 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:46,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-24 00:54:46,767 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:46,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:46,768 INFO L85 PathProgramCache]: Analyzing trace with hash -364408270, now seen corresponding path program 1 times [2024-11-24 00:54:46,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:46,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696940474] [2024-11-24 00:54:46,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:46,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:49,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3198 backedges. 3 proven. 37 refuted. 0 times theorem prover too weak. 3158 trivial. 0 not checked. [2024-11-24 00:54:49,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:49,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696940474] [2024-11-24 00:54:49,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696940474] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:54:49,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495129309] [2024-11-24 00:54:49,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:49,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:49,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:54:49,552 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:54:49,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 00:54:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:50,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-24 00:54:50,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:54:51,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 00:54:51,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 59 [2024-11-24 00:54:51,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-11-24 00:54:51,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2024-11-24 00:54:52,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 53 [2024-11-24 00:54:52,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 39 [2024-11-24 00:54:52,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3198 backedges. 3 proven. 191 refuted. 0 times theorem prover too weak. 3004 trivial. 0 not checked. [2024-11-24 00:54:52,188 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:54:52,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2024-11-24 00:54:52,588 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:54:52,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 49 [2024-11-24 00:54:52,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2024-11-24 00:54:52,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3198 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 3174 trivial. 0 not checked. [2024-11-24 00:54:52,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495129309] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 00:54:52,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:54:52,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12, 9] total 16 [2024-11-24 00:54:52,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739878727] [2024-11-24 00:54:52,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:52,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:54:52,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:52,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:54:52,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-24 00:54:52,866 INFO L87 Difference]: Start difference. First operand 7288 states and 8379 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:53,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:53,932 INFO L93 Difference]: Finished difference Result 12066 states and 13876 transitions. [2024-11-24 00:54:53,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:54:53,932 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 323 [2024-11-24 00:54:53,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:53,936 INFO L225 Difference]: With dead ends: 12066 [2024-11-24 00:54:53,936 INFO L226 Difference]: Without dead ends: 0 [2024-11-24 00:54:53,946 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 642 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-11-24 00:54:53,946 INFO L435 NwaCegarLoop]: 248 mSDtfsCounter, 95 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 1489 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:53,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 1489 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:54:53,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-24 00:54:53,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-24 00:54:53,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:54:53,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-24 00:54:53,950 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 323 [2024-11-24 00:54:53,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:53,951 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-24 00:54:53,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-24 00:54:53,951 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-24 00:54:53,952 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-24 00:54:53,955 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-24 00:54:53,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 00:54:54,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304b1bf7-66be-49a3-811b-59859708e5bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-24 00:54:54,163 INFO L422 BasicCegarLoop]: Path program 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] [2024-11-24 00:54:54,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-24 00:55:02,711 WARN L286 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 319 DAG size of output: 359 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-11-24 00:57:07,606 WARN L286 SmtUtils]: Spent 2.08m on a formula simplification. DAG size of input: 429 DAG size of output: 471 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or)