./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51986bf0-170f-4404-af9f-48935bf4c94a/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51986bf0-170f-4404-af9f-48935bf4c94a/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51986bf0-170f-4404-af9f-48935bf4c94a/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51986bf0-170f-4404-af9f-48935bf4c94a/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51986bf0-170f-4404-af9f-48935bf4c94a/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51986bf0-170f-4404-af9f-48935bf4c94a/bin/uautomizer-verify-zZY32mL2XJ --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 2adf86622f346d8406b4270c76c12e01b0cd0b4263eaaf0f4abdb5436079ce86 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:36:59,790 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:36:59,862 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51986bf0-170f-4404-af9f-48935bf4c94a/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 21:36:59,868 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:36:59,869 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:36:59,896 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:36:59,897 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:36:59,898 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:36:59,899 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 21:36:59,900 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 21:36:59,900 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:36:59,901 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:36:59,902 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:36:59,903 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:36:59,903 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:36:59,904 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:36:59,905 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:36:59,906 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:36:59,906 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:36:59,907 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:36:59,908 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:36:59,909 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:36:59,910 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:36:59,910 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:36:59,911 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:36:59,912 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:36:59,913 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:36:59,913 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:36:59,914 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:36:59,915 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:36:59,915 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:36:59,916 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:36:59,916 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:36:59,917 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:36:59,918 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:36:59,918 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 21:36:59,919 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:36:59,919 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:36:59,920 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:36:59,920 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:36:59,921 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:36:59,922 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:36:59,922 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51986bf0-170f-4404-af9f-48935bf4c94a/bin/uautomizer-verify-zZY32mL2XJ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51986bf0-170f-4404-af9f-48935bf4c94a/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2adf86622f346d8406b4270c76c12e01b0cd0b4263eaaf0f4abdb5436079ce86 [2023-11-23 21:37:00,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:37:00,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:37:00,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:37:00,223 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:37:00,224 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:37:00,226 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51986bf0-170f-4404-af9f-48935bf4c94a/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-8.i [2023-11-23 21:37:03,759 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:37:04,079 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:37:04,080 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51986bf0-170f-4404-af9f-48935bf4c94a/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-8.i [2023-11-23 21:37:04,094 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51986bf0-170f-4404-af9f-48935bf4c94a/bin/uautomizer-verify-zZY32mL2XJ/data/76b4b17a8/189e42dd78dd4088b82ffdae689c7d84/FLAG11856be9b [2023-11-23 21:37:04,114 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51986bf0-170f-4404-af9f-48935bf4c94a/bin/uautomizer-verify-zZY32mL2XJ/data/76b4b17a8/189e42dd78dd4088b82ffdae689c7d84 [2023-11-23 21:37:04,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:37:04,120 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:37:04,122 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:37:04,123 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:37:04,133 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:37:04,134 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:37:04" (1/1) ... [2023-11-23 21:37:04,135 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ecc95f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:04, skipping insertion in model container [2023-11-23 21:37:04,136 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:37:04" (1/1) ... [2023-11-23 21:37:04,204 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:37:04,455 WARN L240 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_51986bf0-170f-4404-af9f-48935bf4c94a/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-8.i[916,929] [2023-11-23 21:37:04,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:37:04,555 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:37:04,570 WARN L240 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_51986bf0-170f-4404-af9f-48935bf4c94a/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-8.i[916,929] [2023-11-23 21:37:04,656 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:37:04,692 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:37:04,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:04 WrapperNode [2023-11-23 21:37:04,693 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:37:04,695 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:37:04,695 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:37:04,695 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:37:04,705 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:04" (1/1) ... [2023-11-23 21:37:04,739 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:04" (1/1) ... [2023-11-23 21:37:04,801 INFO L138 Inliner]: procedures = 29, calls = 152, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 408 [2023-11-23 21:37:04,802 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:37:04,803 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:37:04,803 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:37:04,804 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:37:04,819 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:04" (1/1) ... [2023-11-23 21:37:04,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:04" (1/1) ... [2023-11-23 21:37:04,828 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:04" (1/1) ... [2023-11-23 21:37:04,858 INFO L189 HeapSplitter]: Split 126 memory accesses to 2 slices as follows [2, 124] [2023-11-23 21:37:04,859 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:04" (1/1) ... [2023-11-23 21:37:04,859 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:04" (1/1) ... [2023-11-23 21:37:04,896 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:04" (1/1) ... [2023-11-23 21:37:04,902 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:04" (1/1) ... [2023-11-23 21:37:04,906 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:04" (1/1) ... [2023-11-23 21:37:04,910 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:04" (1/1) ... [2023-11-23 21:37:04,917 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:37:04,919 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:37:04,919 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:37:04,919 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:37:04,920 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:04" (1/1) ... [2023-11-23 21:37:04,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:37:04,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51986bf0-170f-4404-af9f-48935bf4c94a/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:37:04,979 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51986bf0-170f-4404-af9f-48935bf4c94a/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:37:05,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51986bf0-170f-4404-af9f-48935bf4c94a/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:37:05,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:37:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 21:37:05,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 21:37:05,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-11-23 21:37:05,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-11-23 21:37:05,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2023-11-23 21:37:05,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2023-11-23 21:37:05,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 21:37:05,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 21:37:05,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2023-11-23 21:37:05,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2023-11-23 21:37:05,050 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:37:05,050 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:37:05,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 21:37:05,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 21:37:05,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:37:05,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:37:05,216 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:37:05,222 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:37:05,931 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:37:05,977 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:37:05,977 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:37:05,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:37:05 BoogieIcfgContainer [2023-11-23 21:37:05,978 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:37:05,981 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:37:05,981 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:37:05,985 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:37:05,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:37:04" (1/3) ... [2023-11-23 21:37:05,986 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a5705e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:37:05, skipping insertion in model container [2023-11-23 21:37:05,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:04" (2/3) ... [2023-11-23 21:37:05,986 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a5705e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:37:05, skipping insertion in model container [2023-11-23 21:37:05,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:37:05" (3/3) ... [2023-11-23 21:37:05,988 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-8.i [2023-11-23 21:37:06,009 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:37:06,010 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:37:06,068 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:37:06,076 INFO L357 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, mHoare=true, 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;@4d942f13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:37:06,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:37:06,082 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 76 states have (on average 1.4473684210526316) internal successors, (110), 77 states have internal predecessors, (110), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-23 21:37:06,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-23 21:37:06,100 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:06,101 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:37:06,102 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:37:06,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:06,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1665721735, now seen corresponding path program 1 times [2023-11-23 21:37:06,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:37:06,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134993936] [2023-11-23 21:37:06,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:06,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:37:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:06,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 21:37:06,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:06,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 21:37:06,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:06,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 21:37:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:06,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 21:37:06,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:06,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 21:37:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:06,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 21:37:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:06,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 21:37:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:06,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 21:37:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:06,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 21:37:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:06,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 21:37:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:06,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 21:37:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:06,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 21:37:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:06,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 21:37:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:06,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 21:37:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:06,760 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-23 21:37:06,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:37:06,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134993936] [2023-11-23 21:37:06,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134993936] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:06,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:06,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:37:06,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166730247] [2023-11-23 21:37:06,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:06,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:37:06,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:37:06,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:37:06,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:37:06,819 INFO L87 Difference]: Start difference. First operand has 93 states, 76 states have (on average 1.4473684210526316) internal successors, (110), 77 states have internal predecessors, (110), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 21:37:06,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:06,894 INFO L93 Difference]: Finished difference Result 183 states and 288 transitions. [2023-11-23 21:37:06,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:37:06,897 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 118 [2023-11-23 21:37:06,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:06,908 INFO L225 Difference]: With dead ends: 183 [2023-11-23 21:37:06,908 INFO L226 Difference]: Without dead ends: 91 [2023-11-23 21:37:06,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:37:06,919 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:06,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 129 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:37:06,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-23 21:37:06,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-11-23 21:37:06,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 75 states have (on average 1.4) internal successors, (105), 75 states have internal predecessors, (105), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-23 21:37:06,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 133 transitions. [2023-11-23 21:37:06,996 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 133 transitions. Word has length 118 [2023-11-23 21:37:06,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:06,996 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 133 transitions. [2023-11-23 21:37:06,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 21:37:06,999 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 133 transitions. [2023-11-23 21:37:07,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-23 21:37:07,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:07,008 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:37:07,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:37:07,010 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:37:07,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:07,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1494754021, now seen corresponding path program 1 times [2023-11-23 21:37:07,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:37:07,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008415058] [2023-11-23 21:37:07,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:07,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:37:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:07,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 21:37:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:07,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 21:37:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:07,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 21:37:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:07,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 21:37:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:07,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 21:37:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:07,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 21:37:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:07,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 21:37:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:07,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 21:37:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:07,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 21:37:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:07,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 21:37:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:07,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 21:37:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:07,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 21:37:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:07,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 21:37:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:07,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 21:37:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:07,495 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-23 21:37:07,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:37:07,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008415058] [2023-11-23 21:37:07,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008415058] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:07,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:07,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:37:07,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623764381] [2023-11-23 21:37:07,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:07,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:37:07,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:37:07,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:37:07,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:37:07,508 INFO L87 Difference]: Start difference. First operand 91 states and 133 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 21:37:07,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:07,641 INFO L93 Difference]: Finished difference Result 193 states and 282 transitions. [2023-11-23 21:37:07,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:37:07,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 118 [2023-11-23 21:37:07,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:07,650 INFO L225 Difference]: With dead ends: 193 [2023-11-23 21:37:07,650 INFO L226 Difference]: Without dead ends: 103 [2023-11-23 21:37:07,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:37:07,658 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 21 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:07,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 378 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:37:07,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-23 21:37:07,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 93. [2023-11-23 21:37:07,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 77 states have (on average 1.3896103896103895) internal successors, (107), 77 states have internal predecessors, (107), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-23 21:37:07,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 135 transitions. [2023-11-23 21:37:07,684 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 135 transitions. Word has length 118 [2023-11-23 21:37:07,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:07,688 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 135 transitions. [2023-11-23 21:37:07,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 21:37:07,688 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 135 transitions. [2023-11-23 21:37:07,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-23 21:37:07,698 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:07,699 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:37:07,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:37:07,701 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:37:07,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:07,702 INFO L85 PathProgramCache]: Analyzing trace with hash 685407395, now seen corresponding path program 1 times [2023-11-23 21:37:07,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:37:07,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999894222] [2023-11-23 21:37:07,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:07,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:37:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:08,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 21:37:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:08,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 21:37:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:08,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 21:37:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:08,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 21:37:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:08,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 21:37:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:08,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 21:37:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:08,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 21:37:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:08,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 21:37:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:08,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 21:37:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:08,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 21:37:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:08,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 21:37:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:08,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 21:37:08,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:08,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 21:37:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:08,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 21:37:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:08,107 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-23 21:37:08,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:37:08,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999894222] [2023-11-23 21:37:08,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999894222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:08,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:08,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:37:08,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803639492] [2023-11-23 21:37:08,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:08,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:37:08,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:37:08,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:37:08,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:37:08,112 INFO L87 Difference]: Start difference. First operand 93 states and 135 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 21:37:08,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:08,173 INFO L93 Difference]: Finished difference Result 193 states and 280 transitions. [2023-11-23 21:37:08,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:37:08,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 118 [2023-11-23 21:37:08,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:08,176 INFO L225 Difference]: With dead ends: 193 [2023-11-23 21:37:08,176 INFO L226 Difference]: Without dead ends: 101 [2023-11-23 21:37:08,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:37:08,179 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 12 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:08,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 376 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:37:08,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-23 21:37:08,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 95. [2023-11-23 21:37:08,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 79 states have (on average 1.379746835443038) internal successors, (109), 79 states have internal predecessors, (109), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-23 21:37:08,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 137 transitions. [2023-11-23 21:37:08,193 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 137 transitions. Word has length 118 [2023-11-23 21:37:08,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:08,194 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 137 transitions. [2023-11-23 21:37:08,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 21:37:08,194 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 137 transitions. [2023-11-23 21:37:08,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-23 21:37:08,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:08,197 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:37:08,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:37:08,197 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:37:08,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:08,198 INFO L85 PathProgramCache]: Analyzing trace with hash 742665697, now seen corresponding path program 1 times [2023-11-23 21:37:08,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:37:08,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415824053] [2023-11-23 21:37:08,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:08,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:37:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:08,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 21:37:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:08,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 21:37:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:08,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 21:37:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:08,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 21:37:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:08,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 21:37:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:08,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 21:37:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:08,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 21:37:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:08,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 21:37:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:08,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 21:37:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:08,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 21:37:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:08,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 21:37:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:08,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 21:37:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:08,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 21:37:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:08,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 21:37:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:08,443 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-23 21:37:08,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:37:08,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415824053] [2023-11-23 21:37:08,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415824053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:08,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:08,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:37:08,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145681280] [2023-11-23 21:37:08,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:08,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:37:08,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:37:08,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:37:08,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:37:08,448 INFO L87 Difference]: Start difference. First operand 95 states and 137 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 21:37:08,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:08,500 INFO L93 Difference]: Finished difference Result 193 states and 278 transitions. [2023-11-23 21:37:08,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:37:08,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 118 [2023-11-23 21:37:08,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:08,503 INFO L225 Difference]: With dead ends: 193 [2023-11-23 21:37:08,504 INFO L226 Difference]: Without dead ends: 99 [2023-11-23 21:37:08,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:37:08,506 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 3 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:08,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 376 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:37:08,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-23 21:37:08,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2023-11-23 21:37:08,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 81 states have (on average 1.3703703703703705) internal successors, (111), 81 states have internal predecessors, (111), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-23 21:37:08,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 139 transitions. [2023-11-23 21:37:08,554 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 139 transitions. Word has length 118 [2023-11-23 21:37:08,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:08,557 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 139 transitions. [2023-11-23 21:37:08,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 21:37:08,557 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 139 transitions. [2023-11-23 21:37:08,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-23 21:37:08,562 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:08,562 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:37:08,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:37:08,563 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:37:08,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:08,564 INFO L85 PathProgramCache]: Analyzing trace with hash 742725279, now seen corresponding path program 1 times [2023-11-23 21:37:08,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:37:08,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284492588] [2023-11-23 21:37:08,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:08,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:37:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:10,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 21:37:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:10,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 21:37:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:10,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 21:37:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:10,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 21:37:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:10,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 21:37:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:10,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 21:37:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:10,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 21:37:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:10,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 21:37:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:10,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 21:37:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:10,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 21:37:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:10,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 21:37:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:10,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 21:37:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:10,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 21:37:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:11,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 21:37:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:11,025 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-23 21:37:11,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:37:11,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284492588] [2023-11-23 21:37:11,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284492588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:11,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:11,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 21:37:11,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440078503] [2023-11-23 21:37:11,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:11,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:37:11,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:37:11,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:37:11,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:37:11,030 INFO L87 Difference]: Start difference. First operand 97 states and 139 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 21:37:11,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:11,703 INFO L93 Difference]: Finished difference Result 194 states and 278 transitions. [2023-11-23 21:37:11,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:37:11,704 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 118 [2023-11-23 21:37:11,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:11,706 INFO L225 Difference]: With dead ends: 194 [2023-11-23 21:37:11,706 INFO L226 Difference]: Without dead ends: 98 [2023-11-23 21:37:11,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:37:11,708 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 171 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:11,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 268 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:37:11,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-11-23 21:37:11,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2023-11-23 21:37:11,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 81 states have (on average 1.3580246913580247) internal successors, (110), 81 states have internal predecessors, (110), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-23 21:37:11,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 138 transitions. [2023-11-23 21:37:11,733 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 138 transitions. Word has length 118 [2023-11-23 21:37:11,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:11,734 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 138 transitions. [2023-11-23 21:37:11,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 21:37:11,735 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 138 transitions. [2023-11-23 21:37:11,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-23 21:37:11,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:11,737 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:37:11,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:37:11,738 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:37:11,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:11,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1251419427, now seen corresponding path program 1 times [2023-11-23 21:37:11,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:37:11,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058718872] [2023-11-23 21:37:11,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:11,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:37:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:12,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 21:37:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:12,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 21:37:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:12,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 21:37:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:12,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 21:37:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:12,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 21:37:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:12,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 21:37:12,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:12,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 21:37:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:12,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 21:37:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:12,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 21:37:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:12,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 21:37:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:12,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 21:37:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:12,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 21:37:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:12,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 21:37:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:12,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 21:37:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:12,759 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-23 21:37:12,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:37:12,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058718872] [2023-11-23 21:37:12,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058718872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:12,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:12,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:37:12,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885945160] [2023-11-23 21:37:12,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:12,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:37:12,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:37:12,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:37:12,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:37:12,764 INFO L87 Difference]: Start difference. First operand 97 states and 138 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 21:37:13,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:13,128 INFO L93 Difference]: Finished difference Result 250 states and 351 transitions. [2023-11-23 21:37:13,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:37:13,129 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 118 [2023-11-23 21:37:13,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:13,131 INFO L225 Difference]: With dead ends: 250 [2023-11-23 21:37:13,132 INFO L226 Difference]: Without dead ends: 154 [2023-11-23 21:37:13,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:37:13,134 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 182 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:13,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 481 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:37:13,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-23 21:37:13,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 101. [2023-11-23 21:37:13,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 85 states have (on average 1.3529411764705883) internal successors, (115), 85 states have internal predecessors, (115), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-23 21:37:13,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 143 transitions. [2023-11-23 21:37:13,183 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 143 transitions. Word has length 118 [2023-11-23 21:37:13,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:13,184 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 143 transitions. [2023-11-23 21:37:13,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 21:37:13,185 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 143 transitions. [2023-11-23 21:37:13,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-23 21:37:13,187 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:13,187 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:37:13,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:37:13,188 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:37:13,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:13,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1680188958, now seen corresponding path program 1 times [2023-11-23 21:37:13,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:37:13,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116998512] [2023-11-23 21:37:13,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:13,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:37:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:15,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 21:37:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:15,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 21:37:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:15,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 21:37:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:15,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 21:37:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:15,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 21:37:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:15,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 21:37:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:15,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 21:37:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:15,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 21:37:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:16,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 21:37:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:16,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 21:37:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:16,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 21:37:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:16,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 21:37:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:16,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 21:37:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:16,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 21:37:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:16,103 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-23 21:37:16,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:37:16,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116998512] [2023-11-23 21:37:16,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116998512] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:16,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:16,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 21:37:16,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056516579] [2023-11-23 21:37:16,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:16,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:37:16,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:37:16,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:37:16,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:37:16,108 INFO L87 Difference]: Start difference. First operand 101 states and 143 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 21:37:17,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:17,471 INFO L93 Difference]: Finished difference Result 233 states and 327 transitions. [2023-11-23 21:37:17,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:37:17,473 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 120 [2023-11-23 21:37:17,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:17,475 INFO L225 Difference]: With dead ends: 233 [2023-11-23 21:37:17,475 INFO L226 Difference]: Without dead ends: 133 [2023-11-23 21:37:17,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-23 21:37:17,478 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 252 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:17,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 362 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 21:37:17,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-23 21:37:17,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 101. [2023-11-23 21:37:17,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 85 states have (on average 1.3411764705882352) internal successors, (114), 85 states have internal predecessors, (114), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-23 21:37:17,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 142 transitions. [2023-11-23 21:37:17,517 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 142 transitions. Word has length 120 [2023-11-23 21:37:17,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:17,518 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 142 transitions. [2023-11-23 21:37:17,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 21:37:17,518 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 142 transitions. [2023-11-23 21:37:17,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-23 21:37:17,522 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:17,522 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:37:17,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:37:17,523 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:37:17,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:17,523 INFO L85 PathProgramCache]: Analyzing trace with hash 559053122, now seen corresponding path program 1 times [2023-11-23 21:37:17,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:37:17,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560083861] [2023-11-23 21:37:17,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:17,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:37:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:18,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 21:37:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:18,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 21:37:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:19,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 21:37:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:19,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 21:37:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:19,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 21:37:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:19,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 21:37:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:19,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 21:37:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:19,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 21:37:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:19,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 21:37:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:19,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 21:37:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:19,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 21:37:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:19,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 21:37:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:19,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 21:37:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:19,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 21:37:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:19,129 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-23 21:37:19,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:37:19,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560083861] [2023-11-23 21:37:19,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560083861] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:19,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:19,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 21:37:19,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462265887] [2023-11-23 21:37:19,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:19,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:37:19,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:37:19,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:37:19,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:37:19,135 INFO L87 Difference]: Start difference. First operand 101 states and 142 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 21:37:19,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:19,961 INFO L93 Difference]: Finished difference Result 227 states and 316 transitions. [2023-11-23 21:37:19,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:37:19,962 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 120 [2023-11-23 21:37:19,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:19,963 INFO L225 Difference]: With dead ends: 227 [2023-11-23 21:37:19,964 INFO L226 Difference]: Without dead ends: 127 [2023-11-23 21:37:19,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:37:19,965 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 250 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:19,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 294 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 21:37:19,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-23 21:37:19,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 101. [2023-11-23 21:37:19,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 85 states have (on average 1.3294117647058823) internal successors, (113), 85 states have internal predecessors, (113), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-23 21:37:19,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 141 transitions. [2023-11-23 21:37:19,995 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 141 transitions. Word has length 120 [2023-11-23 21:37:19,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:19,996 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 141 transitions. [2023-11-23 21:37:19,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 21:37:19,996 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 141 transitions. [2023-11-23 21:37:20,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-23 21:37:20,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:20,018 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:37:20,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 21:37:20,018 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:37:20,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:20,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1784272085, now seen corresponding path program 1 times [2023-11-23 21:37:20,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:37:20,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36838661] [2023-11-23 21:37:20,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:20,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:37:20,063 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:37:20,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1228158994] [2023-11-23 21:37:20,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:20,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:37:20,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51986bf0-170f-4404-af9f-48935bf4c94a/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:37:20,066 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51986bf0-170f-4404-af9f-48935bf4c94a/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:37:20,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51986bf0-170f-4404-af9f-48935bf4c94a/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:37:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:20,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-23 21:37:20,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:37:24,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:37:24,147 INFO L349 Elim1Store]: treesize reduction 51, result has 22.7 percent of original size [2023-11-23 21:37:24,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-11-23 21:37:24,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:37:24,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2023-11-23 21:37:24,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:37:24,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:37:24,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 20 [2023-11-23 21:37:24,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:37:24,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:37:24,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:37:24,445 INFO L349 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2023-11-23 21:37:24,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2023-11-23 21:37:24,788 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-11-23 21:37:24,788 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:37:37,630 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:37:37,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 774430 treesize of output 725001