./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-64.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14ada74b-f3a5-4fb1-8bf2-ea483f7d317a/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14ada74b-f3a5-4fb1-8bf2-ea483f7d317a/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14ada74b-f3a5-4fb1-8bf2-ea483f7d317a/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14ada74b-f3a5-4fb1-8bf2-ea483f7d317a/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-64.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14ada74b-f3a5-4fb1-8bf2-ea483f7d317a/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14ada74b-f3a5-4fb1-8bf2-ea483f7d317a/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 82402668b8e3e6bc1099650ffea2c85f37237e4249cc993fd95f6102dc824940 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:37:15,605 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:37:15,717 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14ada74b-f3a5-4fb1-8bf2-ea483f7d317a/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:37:15,725 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:37:15,725 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:37:15,767 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:37:15,769 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:37:15,770 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:37:15,770 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:37:15,771 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:37:15,772 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:37:15,772 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:37:15,773 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:37:15,773 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:37:15,774 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:37:15,774 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:37:15,775 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:37:15,775 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:37:15,775 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:37:15,775 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:37:15,775 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:37:15,775 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:37:15,776 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:37:15,776 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:37:15,776 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:37:15,776 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:37:15,776 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:37:15,776 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:37:15,777 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:37:15,777 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:37:15,777 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:37:15,777 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:37:15,777 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:37:15,777 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:37:15,777 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:37:15,778 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:37:15,778 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:37:15,778 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:37:15,778 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:37:15,778 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:37:15,778 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:37:15,779 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:37:15,780 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:37:15,780 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:37:15,780 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:37:15,780 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:37:15,781 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:37:15,781 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:37:15,781 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14ada74b-f3a5-4fb1-8bf2-ea483f7d317a/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82402668b8e3e6bc1099650ffea2c85f37237e4249cc993fd95f6102dc824940 [2024-11-23 23:37:16,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:37:16,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:37:16,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:37:16,196 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:37:16,197 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:37:16,199 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14ada74b-f3a5-4fb1-8bf2-ea483f7d317a/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-64.i [2024-11-23 23:37:19,785 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14ada74b-f3a5-4fb1-8bf2-ea483f7d317a/bin/uautomizer-verify-LYvppIcaGC/data/0b782a805/8f21aab762544a47aabcd6299a852380/FLAG86967c508 [2024-11-23 23:37:20,204 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:37:20,205 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14ada74b-f3a5-4fb1-8bf2-ea483f7d317a/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-64.i [2024-11-23 23:37:20,220 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14ada74b-f3a5-4fb1-8bf2-ea483f7d317a/bin/uautomizer-verify-LYvppIcaGC/data/0b782a805/8f21aab762544a47aabcd6299a852380/FLAG86967c508 [2024-11-23 23:37:20,249 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14ada74b-f3a5-4fb1-8bf2-ea483f7d317a/bin/uautomizer-verify-LYvppIcaGC/data/0b782a805/8f21aab762544a47aabcd6299a852380 [2024-11-23 23:37:20,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:37:20,255 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:37:20,257 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:37:20,258 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:37:20,264 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:37:20,265 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:37:20" (1/1) ... [2024-11-23 23:37:20,269 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@298b3295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:20, skipping insertion in model container [2024-11-23 23:37:20,269 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:37:20" (1/1) ... [2024-11-23 23:37:20,298 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:37:20,518 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14ada74b-f3a5-4fb1-8bf2-ea483f7d317a/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-64.i[915,928] [2024-11-23 23:37:20,611 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:37:20,625 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:37:20,638 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14ada74b-f3a5-4fb1-8bf2-ea483f7d317a/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-64.i[915,928] [2024-11-23 23:37:20,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:37:20,717 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:37:20,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:20 WrapperNode [2024-11-23 23:37:20,718 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:37:20,720 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:37:20,720 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:37:20,720 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:37:20,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:20" (1/1) ... [2024-11-23 23:37:20,743 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:20" (1/1) ... [2024-11-23 23:37:20,781 INFO L138 Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 173 [2024-11-23 23:37:20,782 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:37:20,783 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:37:20,784 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:37:20,784 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:37:20,795 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:20" (1/1) ... [2024-11-23 23:37:20,795 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:20" (1/1) ... [2024-11-23 23:37:20,798 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:20" (1/1) ... [2024-11-23 23:37:20,814 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-23 23:37:20,815 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:20" (1/1) ... [2024-11-23 23:37:20,815 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:20" (1/1) ... [2024-11-23 23:37:20,821 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:20" (1/1) ... [2024-11-23 23:37:20,822 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:20" (1/1) ... [2024-11-23 23:37:20,826 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:20" (1/1) ... [2024-11-23 23:37:20,828 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:20" (1/1) ... [2024-11-23 23:37:20,829 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:20" (1/1) ... [2024-11-23 23:37:20,832 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:37:20,833 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:37:20,833 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:37:20,833 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:37:20,835 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:20" (1/1) ... [2024-11-23 23:37:20,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:37:20,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14ada74b-f3a5-4fb1-8bf2-ea483f7d317a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:37:20,883 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14ada74b-f3a5-4fb1-8bf2-ea483f7d317a/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:37:20,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14ada74b-f3a5-4fb1-8bf2-ea483f7d317a/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:37:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:37:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 23:37:20,929 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 23:37:20,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:37:20,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:37:20,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:37:21,027 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:37:21,029 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:37:21,556 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-23 23:37:21,557 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:37:21,569 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:37:21,569 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 23:37:21,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:37:21 BoogieIcfgContainer [2024-11-23 23:37:21,570 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:37:21,573 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:37:21,573 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:37:21,578 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:37:21,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:37:20" (1/3) ... [2024-11-23 23:37:21,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18431a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:37:21, skipping insertion in model container [2024-11-23 23:37:21,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:37:20" (2/3) ... [2024-11-23 23:37:21,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18431a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:37:21, skipping insertion in model container [2024-11-23 23:37:21,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:37:21" (3/3) ... [2024-11-23 23:37:21,581 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-while_file-64.i [2024-11-23 23:37:21,600 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:37:21,602 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_50-while_file-64.i that has 2 procedures, 75 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:37:21,671 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:37:21,687 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7e3285f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:37:21,687 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:37:21,693 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 47 states have internal predecessors, (63), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-23 23:37:21,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-23 23:37:21,709 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:37:21,709 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:37:21,710 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:37:21,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:37:21,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1472419692, now seen corresponding path program 1 times [2024-11-23 23:37:21,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:37:21,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872588836] [2024-11-23 23:37:21,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:37:21,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:37:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:37:22,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-11-23 23:37:22,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:37:22,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872588836] [2024-11-23 23:37:22,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872588836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:37:22,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498787556] [2024-11-23 23:37:22,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:37:22,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:37:22,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14ada74b-f3a5-4fb1-8bf2-ea483f7d317a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:37:22,219 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14ada74b-f3a5-4fb1-8bf2-ea483f7d317a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:37:22,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14ada74b-f3a5-4fb1-8bf2-ea483f7d317a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:37:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:37:22,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 23:37:22,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:37:22,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-11-23 23:37:22,632 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:37:22,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498787556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:37:22,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:37:22,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 23:37:22,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911936286] [2024-11-23 23:37:22,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:37:22,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:37:22,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:37:22,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:37:22,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:37:22,675 INFO L87 Difference]: Start difference. First operand has 75 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 47 states have internal predecessors, (63), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-23 23:37:22,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:37:22,724 INFO L93 Difference]: Finished difference Result 143 states and 250 transitions. [2024-11-23 23:37:22,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:37:22,727 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) Word has length 163 [2024-11-23 23:37:22,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:37:22,734 INFO L225 Difference]: With dead ends: 143 [2024-11-23 23:37:22,735 INFO L226 Difference]: Without dead ends: 71 [2024-11-23 23:37:22,739 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:37:22,743 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:37:22,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:37:22,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-23 23:37:22,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-23 23:37:22,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 43 states have (on average 1.302325581395349) internal successors, (56), 43 states have internal predecessors, (56), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-23 23:37:22,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 108 transitions. [2024-11-23 23:37:22,802 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 108 transitions. Word has length 163 [2024-11-23 23:37:22,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:37:22,803 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 108 transitions. [2024-11-23 23:37:22,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-23 23:37:22,803 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 108 transitions. [2024-11-23 23:37:22,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-23 23:37:22,808 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:37:22,808 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:37:22,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14ada74b-f3a5-4fb1-8bf2-ea483f7d317a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 23:37:23,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14ada74b-f3a5-4fb1-8bf2-ea483f7d317a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 23:37:23,009 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:37:23,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:37:23,010 INFO L85 PathProgramCache]: Analyzing trace with hash -688375340, now seen corresponding path program 1 times [2024-11-23 23:37:23,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:37:23,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968988357] [2024-11-23 23:37:23,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:37:23,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:37:23,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:37:28,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-23 23:37:28,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:37:28,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968988357] [2024-11-23 23:37:28,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968988357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:37:28,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:37:28,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:37:28,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345334638] [2024-11-23 23:37:28,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:37:28,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:37:28,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:37:28,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:37:28,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:37:28,725 INFO L87 Difference]: Start difference. First operand 71 states and 108 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-23 23:37:29,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:37:29,470 INFO L93 Difference]: Finished difference Result 247 states and 378 transitions. [2024-11-23 23:37:29,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:37:29,471 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 163 [2024-11-23 23:37:29,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:37:29,475 INFO L225 Difference]: With dead ends: 247 [2024-11-23 23:37:29,475 INFO L226 Difference]: Without dead ends: 179 [2024-11-23 23:37:29,476 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:37:29,477 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 128 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:37:29,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 464 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:37:29,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-23 23:37:29,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 75. [2024-11-23 23:37:29,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 47 states have (on average 1.3191489361702127) internal successors, (62), 47 states have internal predecessors, (62), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-23 23:37:29,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 114 transitions. [2024-11-23 23:37:29,500 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 114 transitions. Word has length 163 [2024-11-23 23:37:29,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:37:29,502 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 114 transitions. [2024-11-23 23:37:29,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-23 23:37:29,503 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 114 transitions. [2024-11-23 23:37:29,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-23 23:37:29,505 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:37:29,506 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:37:29,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:37:29,506 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:37:29,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:37:29,507 INFO L85 PathProgramCache]: Analyzing trace with hash -171222316, now seen corresponding path program 1 times [2024-11-23 23:37:29,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:37:29,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579486745] [2024-11-23 23:37:29,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:37:29,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:37:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:37:33,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-23 23:37:33,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:37:33,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579486745] [2024-11-23 23:37:33,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579486745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:37:33,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:37:33,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:37:33,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619014464] [2024-11-23 23:37:33,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:37:33,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:37:33,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:37:33,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:37:33,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:37:33,225 INFO L87 Difference]: Start difference. First operand 75 states and 114 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-23 23:37:33,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:37:33,699 INFO L93 Difference]: Finished difference Result 206 states and 313 transitions. [2024-11-23 23:37:33,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:37:33,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 163 [2024-11-23 23:37:33,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:37:33,706 INFO L225 Difference]: With dead ends: 206 [2024-11-23 23:37:33,706 INFO L226 Difference]: Without dead ends: 134 [2024-11-23 23:37:33,707 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:37:33,708 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 109 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:37:33,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 567 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:37:33,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-23 23:37:33,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 71. [2024-11-23 23:37:33,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 43 states have (on average 1.2790697674418605) internal successors, (55), 43 states have internal predecessors, (55), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-23 23:37:33,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 107 transitions. [2024-11-23 23:37:33,743 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 107 transitions. Word has length 163 [2024-11-23 23:37:33,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:37:33,744 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 107 transitions. [2024-11-23 23:37:33,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-23 23:37:33,744 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 107 transitions. [2024-11-23 23:37:33,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-23 23:37:33,751 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:37:33,751 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:37:33,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:37:33,752 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:37:33,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:37:33,753 INFO L85 PathProgramCache]: Analyzing trace with hash -652193233, now seen corresponding path program 1 times [2024-11-23 23:37:33,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:37:33,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969242991] [2024-11-23 23:37:33,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:37:33,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:37:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:37:41,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-23 23:37:41,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:37:41,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969242991] [2024-11-23 23:37:41,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969242991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:37:41,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:37:41,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:37:41,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333180380] [2024-11-23 23:37:41,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:37:41,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:37:41,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:37:41,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:37:41,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:37:41,253 INFO L87 Difference]: Start difference. First operand 71 states and 107 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-23 23:37:42,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:37:42,946 INFO L93 Difference]: Finished difference Result 315 states and 450 transitions. [2024-11-23 23:37:42,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:37:42,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 165 [2024-11-23 23:37:42,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:37:42,952 INFO L225 Difference]: With dead ends: 315 [2024-11-23 23:37:42,955 INFO L226 Difference]: Without dead ends: 247 [2024-11-23 23:37:42,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:37:42,957 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 298 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:37:42,958 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 327 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-23 23:37:42,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-11-23 23:37:43,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 171. [2024-11-23 23:37:43,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 120 states have (on average 1.3416666666666666) internal successors, (161), 123 states have internal predecessors, (161), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-23 23:37:43,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 253 transitions. [2024-11-23 23:37:43,050 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 253 transitions. Word has length 165 [2024-11-23 23:37:43,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:37:43,051 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 253 transitions. [2024-11-23 23:37:43,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-23 23:37:43,052 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 253 transitions. [2024-11-23 23:37:43,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-23 23:37:43,055 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:37:43,055 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:37:43,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:37:43,056 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:37:43,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:37:43,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1045220243, now seen corresponding path program 1 times [2024-11-23 23:37:43,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:37:43,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066121801] [2024-11-23 23:37:43,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:37:43,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:37:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:48:18,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-23 23:48:18,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:48:18,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066121801] [2024-11-23 23:48:18,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066121801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:48:18,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:48:18,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 23:48:18,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658309437] [2024-11-23 23:48:18,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:48:18,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 23:48:18,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:48:18,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 23:48:18,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:48:18,174 INFO L87 Difference]: Start difference. First operand 171 states and 253 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-23 23:48:25,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:48:25,932 INFO L93 Difference]: Finished difference Result 275 states and 394 transitions. [2024-11-23 23:48:25,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 23:48:25,933 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 165 [2024-11-23 23:48:25,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:48:25,937 INFO L225 Difference]: With dead ends: 275 [2024-11-23 23:48:25,937 INFO L226 Difference]: Without dead ends: 273 [2024-11-23 23:48:25,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2024-11-23 23:48:25,940 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 158 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:48:25,940 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 524 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-23 23:48:25,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-11-23 23:48:26,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 226. [2024-11-23 23:48:26,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 165 states have (on average 1.3515151515151516) internal successors, (223), 169 states have internal predecessors, (223), 54 states have call successors, (54), 6 states have call predecessors, (54), 6 states have return successors, (54), 50 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-23 23:48:26,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 331 transitions. [2024-11-23 23:48:26,028 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 331 transitions. Word has length 165 [2024-11-23 23:48:26,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:48:26,028 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 331 transitions. [2024-11-23 23:48:26,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-23 23:48:26,029 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 331 transitions. [2024-11-23 23:48:26,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-23 23:48:26,031 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:48:26,032 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:48:26,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:48:26,032 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:48:26,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:48:26,033 INFO L85 PathProgramCache]: Analyzing trace with hash -787054805, now seen corresponding path program 1 times [2024-11-23 23:48:26,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:48:26,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741854308] [2024-11-23 23:48:26,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:48:26,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:48:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat