./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-82.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86927667-431a-4e49-ac70-37cd3f33691b/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86927667-431a-4e49-ac70-37cd3f33691b/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86927667-431a-4e49-ac70-37cd3f33691b/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86927667-431a-4e49-ac70-37cd3f33691b/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-82.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86927667-431a-4e49-ac70-37cd3f33691b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86927667-431a-4e49-ac70-37cd3f33691b/bin/uautomizer-verify-aQ6SnzHsRB --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 f85bc794ddaf472a7e3079e39d319628ff71704bc56bc279abbe4af1f903e58e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:17:50,916 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:17:51,002 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86927667-431a-4e49-ac70-37cd3f33691b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:17:51,011 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:17:51,011 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:17:51,040 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:17:51,041 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:17:51,041 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:17:51,041 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:17:51,041 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:17:51,042 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:17:51,042 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:17:51,042 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:17:51,042 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:17:51,042 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:17:51,043 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:17:51,043 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:17:51,043 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:17:51,043 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:17:51,043 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:17:51,043 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:17:51,043 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:17:51,043 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:17:51,043 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:17:51,044 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:17:51,044 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:17:51,044 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:17:51,044 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:17:51,044 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:17:51,044 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:17:51,044 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:17:51,044 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:17:51,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:17:51,045 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:17:51,045 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:17:51,045 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:17:51,045 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:17:51,045 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:17:51,045 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:17:51,045 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:17:51,045 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:17:51,047 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:17:51,047 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:17:51,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:17:51,047 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:17:51,047 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:17:51,047 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:17:51,047 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:17:51,048 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_86927667-431a-4e49-ac70-37cd3f33691b/bin/uautomizer-verify-aQ6SnzHsRB 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 -> f85bc794ddaf472a7e3079e39d319628ff71704bc56bc279abbe4af1f903e58e [2024-11-27 23:17:51,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:17:51,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:17:51,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:17:51,364 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:17:51,364 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:17:51,365 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86927667-431a-4e49-ac70-37cd3f33691b/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-82.i [2024-11-27 23:17:54,366 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86927667-431a-4e49-ac70-37cd3f33691b/bin/uautomizer-verify-aQ6SnzHsRB/data/6034515e3/08c25489c23b4f2abe8a67024d23cb41/FLAGf0418a7e0 [2024-11-27 23:17:54,759 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:17:54,760 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86927667-431a-4e49-ac70-37cd3f33691b/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-82.i [2024-11-27 23:17:54,779 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86927667-431a-4e49-ac70-37cd3f33691b/bin/uautomizer-verify-aQ6SnzHsRB/data/6034515e3/08c25489c23b4f2abe8a67024d23cb41/FLAGf0418a7e0 [2024-11-27 23:17:54,953 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86927667-431a-4e49-ac70-37cd3f33691b/bin/uautomizer-verify-aQ6SnzHsRB/data/6034515e3/08c25489c23b4f2abe8a67024d23cb41 [2024-11-27 23:17:54,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:17:54,962 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:17:54,964 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:17:54,965 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:17:54,971 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:17:54,972 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:17:54" (1/1) ... [2024-11-27 23:17:54,975 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58ea965a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:17:54, skipping insertion in model container [2024-11-27 23:17:54,976 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:17:54" (1/1) ... [2024-11-27 23:17:55,027 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:17:55,248 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_86927667-431a-4e49-ac70-37cd3f33691b/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-82.i[916,929] [2024-11-27 23:17:55,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:17:55,544 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:17:55,561 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_86927667-431a-4e49-ac70-37cd3f33691b/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-82.i[916,929] [2024-11-27 23:17:55,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:17:55,769 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:17:55,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:17:55 WrapperNode [2024-11-27 23:17:55,770 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:17:55,771 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:17:55,771 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:17:55,771 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:17:55,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:17:55" (1/1) ... [2024-11-27 23:17:55,800 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:17:55" (1/1) ... [2024-11-27 23:17:55,928 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 500 [2024-11-27 23:17:55,929 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:17:55,930 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:17:55,930 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:17:55,931 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:17:55,941 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:17:55" (1/1) ... [2024-11-27 23:17:55,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:17:55" (1/1) ... [2024-11-27 23:17:55,963 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:17:55" (1/1) ... [2024-11-27 23:17:56,015 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]. [2024-11-27 23:17:56,016 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:17:55" (1/1) ... [2024-11-27 23:17:56,016 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:17:55" (1/1) ... [2024-11-27 23:17:56,060 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:17:55" (1/1) ... [2024-11-27 23:17:56,063 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:17:55" (1/1) ... [2024-11-27 23:17:56,068 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:17:55" (1/1) ... [2024-11-27 23:17:56,073 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:17:55" (1/1) ... [2024-11-27 23:17:56,081 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:17:55" (1/1) ... [2024-11-27 23:17:56,096 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:17:56,099 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:17:56,099 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:17:56,099 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:17:56,100 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:17:55" (1/1) ... [2024-11-27 23:17:56,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:17:56,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86927667-431a-4e49-ac70-37cd3f33691b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:17:56,139 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86927667-431a-4e49-ac70-37cd3f33691b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:17:56,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86927667-431a-4e49-ac70-37cd3f33691b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:17:56,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:17:56,174 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 23:17:56,174 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 23:17:56,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:17:56,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:17:56,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:17:56,341 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:17:56,344 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:17:57,758 INFO L? ?]: Removed 42 outVars from TransFormulas that were not future-live. [2024-11-27 23:17:57,759 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:17:57,784 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:17:57,788 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 23:17:57,789 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:17:57 BoogieIcfgContainer [2024-11-27 23:17:57,789 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:17:57,791 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:17:57,793 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:17:57,799 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:17:57,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:17:54" (1/3) ... [2024-11-27 23:17:57,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743f0c30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:17:57, skipping insertion in model container [2024-11-27 23:17:57,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:17:55" (2/3) ... [2024-11-27 23:17:57,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743f0c30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:17:57, skipping insertion in model container [2024-11-27 23:17:57,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:17:57" (3/3) ... [2024-11-27 23:17:57,805 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-82.i [2024-11-27 23:17:57,825 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:17:57,829 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-82.i that has 2 procedures, 205 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 23:17:57,928 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:17:57,947 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;@3c02adde, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:17:57,947 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 23:17:57,954 INFO L276 IsEmpty]: Start isEmpty. Operand has 205 states, 152 states have (on average 1.5263157894736843) internal successors, (232), 153 states have internal predecessors, (232), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-27 23:17:57,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2024-11-27 23:17:57,983 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:17:57,984 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:17:57,986 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:17:57,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:17:57,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1242000974, now seen corresponding path program 1 times [2024-11-27 23:17:58,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:17:58,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817711512] [2024-11-27 23:17:58,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:17:58,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:17:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:17:58,707 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2024-11-27 23:17:58,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:17:58,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817711512] [2024-11-27 23:17:58,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817711512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:17:58,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195262705] [2024-11-27 23:17:58,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:17:58,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:58,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86927667-431a-4e49-ac70-37cd3f33691b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:17:58,717 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86927667-431a-4e49-ac70-37cd3f33691b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:17:58,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86927667-431a-4e49-ac70-37cd3f33691b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:17:59,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:17:59,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 23:17:59,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:17:59,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2024-11-27 23:17:59,215 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:17:59,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195262705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:17:59,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:17:59,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 23:17:59,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616896830] [2024-11-27 23:17:59,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:17:59,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:17:59,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:17:59,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:17:59,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:17:59,251 INFO L87 Difference]: Start difference. First operand has 205 states, 152 states have (on average 1.5263157894736843) internal successors, (232), 153 states have internal predecessors, (232), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-27 23:17:59,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:17:59,340 INFO L93 Difference]: Finished difference Result 403 states and 708 transitions. [2024-11-27 23:17:59,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:17:59,345 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) Word has length 334 [2024-11-27 23:17:59,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:17:59,358 INFO L225 Difference]: With dead ends: 403 [2024-11-27 23:17:59,358 INFO L226 Difference]: Without dead ends: 201 [2024-11-27 23:17:59,363 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:17:59,366 INFO L435 NwaCegarLoop]: 324 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, 324 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 [2024-11-27 23:17:59,369 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:17:59,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-27 23:17:59,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2024-11-27 23:17:59,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 149 states have (on average 1.5033557046979866) internal successors, (224), 149 states have internal predecessors, (224), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-27 23:17:59,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 324 transitions. [2024-11-27 23:17:59,468 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 324 transitions. Word has length 334 [2024-11-27 23:17:59,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:17:59,468 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 324 transitions. [2024-11-27 23:17:59,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-27 23:17:59,471 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 324 transitions. [2024-11-27 23:17:59,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2024-11-27 23:17:59,484 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:17:59,485 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:17:59,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86927667-431a-4e49-ac70-37cd3f33691b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:17:59,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86927667-431a-4e49-ac70-37cd3f33691b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-27 23:17:59,689 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:17:59,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:17:59,690 INFO L85 PathProgramCache]: Analyzing trace with hash 183916854, now seen corresponding path program 1 times [2024-11-27 23:17:59,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:17:59,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095079260] [2024-11-27 23:17:59,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:17:59,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:17:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:01,648 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-27 23:18:01,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:01,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095079260] [2024-11-27 23:18:01,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095079260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:01,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:18:01,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 23:18:01,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610490857] [2024-11-27 23:18:01,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:01,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:18:01,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:01,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:18:01,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:18:01,656 INFO L87 Difference]: Start difference. First operand 201 states and 324 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-27 23:18:03,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:03,238 INFO L93 Difference]: Finished difference Result 1050 states and 1696 transitions. [2024-11-27 23:18:03,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:18:03,239 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 334 [2024-11-27 23:18:03,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:03,257 INFO L225 Difference]: With dead ends: 1050 [2024-11-27 23:18:03,257 INFO L226 Difference]: Without dead ends: 852 [2024-11-27 23:18:03,260 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2024-11-27 23:18:03,263 INFO L435 NwaCegarLoop]: 660 mSDtfsCounter, 1814 mSDsluCounter, 3044 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1814 SdHoareTripleChecker+Valid, 3704 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:18:03,264 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1814 Valid, 3704 Invalid, 657 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [348 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-27 23:18:03,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2024-11-27 23:18:03,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 729. [2024-11-27 23:18:03,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 549 states have (on average 1.5100182149362478) internal successors, (829), 551 states have internal predecessors, (829), 174 states have call successors, (174), 5 states have call predecessors, (174), 5 states have return successors, (174), 172 states have call predecessors, (174), 174 states have call successors, (174) [2024-11-27 23:18:03,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1177 transitions. [2024-11-27 23:18:03,480 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1177 transitions. Word has length 334 [2024-11-27 23:18:03,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:03,482 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 1177 transitions. [2024-11-27 23:18:03,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-27 23:18:03,482 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1177 transitions. [2024-11-27 23:18:03,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2024-11-27 23:18:03,487 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:03,487 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:03,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:18:03,488 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:03,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:03,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1865470988, now seen corresponding path program 1 times [2024-11-27 23:18:03,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:03,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116453144] [2024-11-27 23:18:03,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:03,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:04,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-27 23:18:04,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:04,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116453144] [2024-11-27 23:18:04,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116453144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:04,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:18:04,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:18:04,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976553872] [2024-11-27 23:18:04,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:04,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:18:04,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:04,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:18:04,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:18:04,255 INFO L87 Difference]: Start difference. First operand 729 states and 1177 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-27 23:18:04,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:04,904 INFO L93 Difference]: Finished difference Result 2447 states and 3961 transitions. [2024-11-27 23:18:04,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:18:04,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 334 [2024-11-27 23:18:04,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:04,928 INFO L225 Difference]: With dead ends: 2447 [2024-11-27 23:18:04,928 INFO L226 Difference]: Without dead ends: 1721 [2024-11-27 23:18:04,932 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:18:04,935 INFO L435 NwaCegarLoop]: 405 mSDtfsCounter, 401 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:18:04,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 1013 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:18:04,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2024-11-27 23:18:05,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1585. [2024-11-27 23:18:05,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1226 states have (on average 1.531810766721044) internal successors, (1878), 1230 states have internal predecessors, (1878), 348 states have call successors, (348), 10 states have call predecessors, (348), 10 states have return successors, (348), 344 states have call predecessors, (348), 348 states have call successors, (348) [2024-11-27 23:18:05,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2574 transitions. [2024-11-27 23:18:05,276 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2574 transitions. Word has length 334 [2024-11-27 23:18:05,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:05,278 INFO L471 AbstractCegarLoop]: Abstraction has 1585 states and 2574 transitions. [2024-11-27 23:18:05,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-27 23:18:05,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2574 transitions. [2024-11-27 23:18:05,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-11-27 23:18:05,284 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:05,284 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:05,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:18:05,285 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:05,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:05,286 INFO L85 PathProgramCache]: Analyzing trace with hash -2078469936, now seen corresponding path program 1 times [2024-11-27 23:18:05,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:05,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818561404] [2024-11-27 23:18:05,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:05,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:06,542 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-27 23:18:06,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:06,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818561404] [2024-11-27 23:18:06,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818561404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:06,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:18:06,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:18:06,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229853883] [2024-11-27 23:18:06,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:06,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 23:18:06,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:06,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 23:18:06,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:18:06,546 INFO L87 Difference]: Start difference. First operand 1585 states and 2574 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-27 23:18:09,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:09,413 INFO L93 Difference]: Finished difference Result 5360 states and 8706 transitions. [2024-11-27 23:18:09,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 23:18:09,414 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 335 [2024-11-27 23:18:09,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:09,439 INFO L225 Difference]: With dead ends: 5360 [2024-11-27 23:18:09,439 INFO L226 Difference]: Without dead ends: 3778 [2024-11-27 23:18:09,445 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2024-11-27 23:18:09,446 INFO L435 NwaCegarLoop]: 641 mSDtfsCounter, 3078 mSDsluCounter, 2498 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3078 SdHoareTripleChecker+Valid, 3139 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:18:09,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3078 Valid, 3139 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-27 23:18:09,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3778 states. [2024-11-27 23:18:09,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3778 to 2177. [2024-11-27 23:18:09,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2177 states, 1714 states have (on average 1.543757292882147) internal successors, (2646), 1720 states have internal predecessors, (2646), 448 states have call successors, (448), 14 states have call predecessors, (448), 14 states have return successors, (448), 442 states have call predecessors, (448), 448 states have call successors, (448) [2024-11-27 23:18:09,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2177 states to 2177 states and 3542 transitions. [2024-11-27 23:18:09,826 INFO L78 Accepts]: Start accepts. Automaton has 2177 states and 3542 transitions. Word has length 335 [2024-11-27 23:18:09,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:09,827 INFO L471 AbstractCegarLoop]: Abstraction has 2177 states and 3542 transitions. [2024-11-27 23:18:09,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-27 23:18:09,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2177 states and 3542 transitions. [2024-11-27 23:18:09,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-11-27 23:18:09,832 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:09,833 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:09,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:18:09,833 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:09,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:09,834 INFO L85 PathProgramCache]: Analyzing trace with hash 371130194, now seen corresponding path program 1 times [2024-11-27 23:18:09,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:09,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988334419] [2024-11-27 23:18:09,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:09,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:10,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-27 23:18:10,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:10,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988334419] [2024-11-27 23:18:10,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988334419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:10,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:18:10,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:18:10,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570641796] [2024-11-27 23:18:10,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:10,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:18:10,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:10,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:18:10,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:18:10,653 INFO L87 Difference]: Start difference. First operand 2177 states and 3542 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-27 23:18:12,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:12,633 INFO L93 Difference]: Finished difference Result 6679 states and 10825 transitions. [2024-11-27 23:18:12,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:18:12,633 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 335 [2024-11-27 23:18:12,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:12,666 INFO L225 Difference]: With dead ends: 6679 [2024-11-27 23:18:12,666 INFO L226 Difference]: Without dead ends: 4505 [2024-11-27 23:18:12,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:18:12,675 INFO L435 NwaCegarLoop]: 555 mSDtfsCounter, 853 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 1348 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:18:12,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 1348 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 23:18:12,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4505 states. [2024-11-27 23:18:13,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4505 to 2897. [2024-11-27 23:18:13,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2897 states, 2384 states have (on average 1.579278523489933) internal successors, (3765), 2392 states have internal predecessors, (3765), 496 states have call successors, (496), 16 states have call predecessors, (496), 16 states have return successors, (496), 488 states have call predecessors, (496), 496 states have call successors, (496) [2024-11-27 23:18:13,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2897 states to 2897 states and 4757 transitions. [2024-11-27 23:18:13,166 INFO L78 Accepts]: Start accepts. Automaton has 2897 states and 4757 transitions. Word has length 335 [2024-11-27 23:18:13,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:13,167 INFO L471 AbstractCegarLoop]: Abstraction has 2897 states and 4757 transitions. [2024-11-27 23:18:13,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-27 23:18:13,168 INFO L276 IsEmpty]: Start isEmpty. Operand 2897 states and 4757 transitions. [2024-11-27 23:18:13,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-11-27 23:18:13,173 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:13,174 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:13,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:18:13,174 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:13,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:13,175 INFO L85 PathProgramCache]: Analyzing trace with hash 864404244, now seen corresponding path program 1 times [2024-11-27 23:18:13,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:13,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105965828] [2024-11-27 23:18:13,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:13,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:14,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-27 23:18:14,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:14,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105965828] [2024-11-27 23:18:14,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105965828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:14,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:18:14,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:18:14,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673931713] [2024-11-27 23:18:14,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:14,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 23:18:14,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:14,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 23:18:14,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:18:14,481 INFO L87 Difference]: Start difference. First operand 2897 states and 4757 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-27 23:18:17,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:17,700 INFO L93 Difference]: Finished difference Result 7656 states and 12450 transitions. [2024-11-27 23:18:17,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:18:17,701 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 335 [2024-11-27 23:18:17,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:17,741 INFO L225 Difference]: With dead ends: 7656 [2024-11-27 23:18:17,741 INFO L226 Difference]: Without dead ends: 6515 [2024-11-27 23:18:17,748 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2024-11-27 23:18:17,749 INFO L435 NwaCegarLoop]: 593 mSDtfsCounter, 1331 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:18:17,780 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1331 Valid, 2436 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-27 23:18:17,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6515 states. [2024-11-27 23:18:18,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6515 to 3455. [2024-11-27 23:18:18,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3455 states, 2942 states have (on average 1.6050305914343983) internal successors, (4722), 2950 states have internal predecessors, (4722), 496 states have call successors, (496), 16 states have call predecessors, (496), 16 states have return successors, (496), 488 states have call predecessors, (496), 496 states have call successors, (496) [2024-11-27 23:18:18,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3455 states to 3455 states and 5714 transitions. [2024-11-27 23:18:18,297 INFO L78 Accepts]: Start accepts. Automaton has 3455 states and 5714 transitions. Word has length 335 [2024-11-27 23:18:18,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:18,299 INFO L471 AbstractCegarLoop]: Abstraction has 3455 states and 5714 transitions. [2024-11-27 23:18:18,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-27 23:18:18,299 INFO L276 IsEmpty]: Start isEmpty. Operand 3455 states and 5714 transitions. [2024-11-27 23:18:18,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-11-27 23:18:18,306 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:18,306 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:18,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:18:18,307 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:18,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:18,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1184983598, now seen corresponding path program 1 times [2024-11-27 23:18:18,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:18,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911148054] [2024-11-27 23:18:18,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:18,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:21,597 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 108 proven. 39 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2024-11-27 23:18:21,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:21,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911148054] [2024-11-27 23:18:21,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911148054] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:18:21,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577546327] [2024-11-27 23:18:21,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:21,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:21,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86927667-431a-4e49-ac70-37cd3f33691b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:21,601 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86927667-431a-4e49-ac70-37cd3f33691b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:18:21,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86927667-431a-4e49-ac70-37cd3f33691b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:18:22,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:22,013 INFO L256 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-27 23:18:22,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:18:24,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1929 proven. 90 refuted. 0 times theorem prover too weak. 2881 trivial. 0 not checked. [2024-11-27 23:18:24,984 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:18:28,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577546327] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:18:28,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:18:28,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 28 [2024-11-27 23:18:28,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006159716] [2024-11-27 23:18:28,634 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:18:28,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-27 23:18:28,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:28,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-27 23:18:28,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=955, Unknown=0, NotChecked=0, Total=1122 [2024-11-27 23:18:28,640 INFO L87 Difference]: Start difference. First operand 3455 states and 5714 transitions. Second operand has 28 states, 28 states have (on average 6.214285714285714) internal successors, (174), 27 states have internal predecessors, (174), 6 states have call successors, (100), 5 states have call predecessors, (100), 7 states have return successors, (100), 6 states have call predecessors, (100), 6 states have call successors, (100) [2024-11-27 23:18:48,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:48,713 INFO L93 Difference]: Finished difference Result 28842 states and 46691 transitions. [2024-11-27 23:18:48,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2024-11-27 23:18:48,714 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.214285714285714) internal successors, (174), 27 states have internal predecessors, (174), 6 states have call successors, (100), 5 states have call predecessors, (100), 7 states have return successors, (100), 6 states have call predecessors, (100), 6 states have call successors, (100) Word has length 335 [2024-11-27 23:18:48,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:48,851 INFO L225 Difference]: With dead ends: 28842 [2024-11-27 23:18:48,851 INFO L226 Difference]: Without dead ends: 25390 [2024-11-27 23:18:48,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9459 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=4165, Invalid=21917, Unknown=0, NotChecked=0, Total=26082 [2024-11-27 23:18:48,877 INFO L435 NwaCegarLoop]: 519 mSDtfsCounter, 4854 mSDsluCounter, 6637 mSDsCounter, 0 mSdLazyCounter, 5798 mSolverCounterSat, 3200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4855 SdHoareTripleChecker+Valid, 7156 SdHoareTripleChecker+Invalid, 8998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3200 IncrementalHoareTripleChecker+Valid, 5798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:18:48,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4855 Valid, 7156 Invalid, 8998 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3200 Valid, 5798 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2024-11-27 23:18:48,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25390 states. [2024-11-27 23:18:51,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25390 to 16512. [2024-11-27 23:18:51,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16512 states, 13981 states have (on average 1.5728488663185751) internal successors, (21990), 14038 states have internal predecessors, (21990), 2388 states have call successors, (2388), 142 states have call predecessors, (2388), 142 states have return successors, (2388), 2331 states have call predecessors, (2388), 2388 states have call successors, (2388) [2024-11-27 23:18:51,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16512 states to 16512 states and 26766 transitions. [2024-11-27 23:18:51,869 INFO L78 Accepts]: Start accepts. Automaton has 16512 states and 26766 transitions. Word has length 335 [2024-11-27 23:18:51,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:51,870 INFO L471 AbstractCegarLoop]: Abstraction has 16512 states and 26766 transitions. [2024-11-27 23:18:51,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.214285714285714) internal successors, (174), 27 states have internal predecessors, (174), 6 states have call successors, (100), 5 states have call predecessors, (100), 7 states have return successors, (100), 6 states have call predecessors, (100), 6 states have call successors, (100) [2024-11-27 23:18:51,871 INFO L276 IsEmpty]: Start isEmpty. Operand 16512 states and 26766 transitions. [2024-11-27 23:18:51,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-11-27 23:18:51,899 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:51,899 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:51,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86927667-431a-4e49-ac70-37cd3f33691b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 23:18:52,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86927667-431a-4e49-ac70-37cd3f33691b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:52,103 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:52,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:52,104 INFO L85 PathProgramCache]: Analyzing trace with hash 260084946, now seen corresponding path program 1 times [2024-11-27 23:18:52,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:52,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145446509] [2024-11-27 23:18:52,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:52,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:58,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 309 proven. 594 refuted. 0 times theorem prover too weak. 3997 trivial. 0 not checked. [2024-11-27 23:18:58,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:58,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145446509] [2024-11-27 23:18:58,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145446509] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:18:58,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452440243] [2024-11-27 23:18:58,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:58,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:58,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86927667-431a-4e49-ac70-37cd3f33691b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:58,265 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86927667-431a-4e49-ac70-37cd3f33691b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:18:58,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86927667-431a-4e49-ac70-37cd3f33691b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:18:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:58,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-27 23:18:58,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:19:07,206 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 3230 proven. 594 refuted. 0 times theorem prover too weak. 1076 trivial. 0 not checked. [2024-11-27 23:19:07,207 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:19:09,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452440243] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:19:09,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:19:09,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 29] total 47 [2024-11-27 23:19:09,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441922065] [2024-11-27 23:19:09,103 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:19:09,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-27 23:19:09,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:19:09,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-27 23:19:09,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=2374, Unknown=0, NotChecked=0, Total=2756 [2024-11-27 23:19:09,107 INFO L87 Difference]: Start difference. First operand 16512 states and 26766 transitions. Second operand has 47 states, 45 states have (on average 4.111111111111111) internal successors, (185), 43 states have internal predecessors, (185), 16 states have call successors, (100), 9 states have call predecessors, (100), 14 states have return successors, (100), 16 states have call predecessors, (100), 16 states have call successors, (100) [2024-11-27 23:20:29,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:29,512 INFO L93 Difference]: Finished difference Result 197777 states and 319283 transitions. [2024-11-27 23:20:29,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 463 states. [2024-11-27 23:20:29,513 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 45 states have (on average 4.111111111111111) internal successors, (185), 43 states have internal predecessors, (185), 16 states have call successors, (100), 9 states have call predecessors, (100), 14 states have return successors, (100), 16 states have call predecessors, (100), 16 states have call successors, (100) Word has length 335 [2024-11-27 23:20:29,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:30,157 INFO L225 Difference]: With dead ends: 197777 [2024-11-27 23:20:30,157 INFO L226 Difference]: Without dead ends: 181336 [2024-11-27 23:20:30,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 986 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 506 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112041 ImplicationChecksByTransitivity, 49.1s TimeCoverageRelationStatistics Valid=25358, Invalid=232198, Unknown=0, NotChecked=0, Total=257556 [2024-11-27 23:20:30,269 INFO L435 NwaCegarLoop]: 912 mSDtfsCounter, 9924 mSDsluCounter, 22789 mSDsCounter, 0 mSdLazyCounter, 17008 mSolverCounterSat, 2042 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9980 SdHoareTripleChecker+Valid, 23701 SdHoareTripleChecker+Invalid, 19050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2042 IncrementalHoareTripleChecker+Valid, 17008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:30,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9980 Valid, 23701 Invalid, 19050 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2042 Valid, 17008 Invalid, 0 Unknown, 0 Unchecked, 22.5s Time] [2024-11-27 23:20:30,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181336 states. [2024-11-27 23:20:36,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181336 to 77405. [2024-11-27 23:20:36,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77405 states, 71590 states have (on average 1.6380220701215253) internal successors, (117266), 71743 states have internal predecessors, (117266), 5217 states have call successors, (5217), 597 states have call predecessors, (5217), 597 states have return successors, (5217), 5064 states have call predecessors, (5217), 5217 states have call successors, (5217) [2024-11-27 23:20:37,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77405 states to 77405 states and 127700 transitions. [2024-11-27 23:20:37,056 INFO L78 Accepts]: Start accepts. Automaton has 77405 states and 127700 transitions. Word has length 335 [2024-11-27 23:20:37,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:37,058 INFO L471 AbstractCegarLoop]: Abstraction has 77405 states and 127700 transitions. [2024-11-27 23:20:37,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 45 states have (on average 4.111111111111111) internal successors, (185), 43 states have internal predecessors, (185), 16 states have call successors, (100), 9 states have call predecessors, (100), 14 states have return successors, (100), 16 states have call predecessors, (100), 16 states have call successors, (100) [2024-11-27 23:20:37,060 INFO L276 IsEmpty]: Start isEmpty. Operand 77405 states and 127700 transitions. [2024-11-27 23:20:37,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-11-27 23:20:37,115 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:37,116 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:37,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86927667-431a-4e49-ac70-37cd3f33691b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 23:20:37,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86927667-431a-4e49-ac70-37cd3f33691b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:37,320 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:20:37,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:37,321 INFO L85 PathProgramCache]: Analyzing trace with hash 683731668, now seen corresponding path program 1 times [2024-11-27 23:20:37,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:37,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950741432] [2024-11-27 23:20:37,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:37,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:38,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-27 23:20:38,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:38,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950741432] [2024-11-27 23:20:38,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950741432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:38,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:38,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:20:38,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687253123] [2024-11-27 23:20:38,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:38,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:20:38,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:38,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:20:38,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:20:38,062 INFO L87 Difference]: Start difference. First operand 77405 states and 127700 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-27 23:20:44,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:44,626 INFO L93 Difference]: Finished difference Result 185301 states and 306034 transitions. [2024-11-27 23:20:44,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:20:44,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 335 [2024-11-27 23:20:44,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:44,925 INFO L225 Difference]: With dead ends: 185301 [2024-11-27 23:20:44,925 INFO L226 Difference]: Without dead ends: 107994 [2024-11-27 23:20:45,004 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:20:45,005 INFO L435 NwaCegarLoop]: 350 mSDtfsCounter, 384 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:45,005 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 1167 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 23:20:45,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107994 states. [2024-11-27 23:20:50,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107994 to 77554. [2024-11-27 23:20:50,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77554 states, 71718 states have (on average 1.637580523717895) internal successors, (117444), 71870 states have internal predecessors, (117444), 5232 states have call successors, (5232), 603 states have call predecessors, (5232), 603 states have return successors, (5232), 5080 states have call predecessors, (5232), 5232 states have call successors, (5232) [2024-11-27 23:20:50,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77554 states to 77554 states and 127908 transitions. [2024-11-27 23:20:50,500 INFO L78 Accepts]: Start accepts. Automaton has 77554 states and 127908 transitions. Word has length 335 [2024-11-27 23:20:50,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:50,501 INFO L471 AbstractCegarLoop]: Abstraction has 77554 states and 127908 transitions. [2024-11-27 23:20:50,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-27 23:20:50,501 INFO L276 IsEmpty]: Start isEmpty. Operand 77554 states and 127908 transitions. [2024-11-27 23:20:50,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-11-27 23:20:50,545 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:50,545 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:50,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 23:20:50,546 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:20:50,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:50,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1347709486, now seen corresponding path program 1 times [2024-11-27 23:20:50,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:50,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737016552] [2024-11-27 23:20:50,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:50,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:51,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-27 23:20:51,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:51,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737016552] [2024-11-27 23:20:51,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737016552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:51,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:51,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:20:51,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850361069] [2024-11-27 23:20:51,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:51,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:20:51,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:51,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:20:51,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:20:51,379 INFO L87 Difference]: Start difference. First operand 77554 states and 127908 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-27 23:21:00,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:00,523 INFO L93 Difference]: Finished difference Result 274335 states and 452943 transitions. [2024-11-27 23:21:00,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:21:00,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 335 [2024-11-27 23:21:00,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:01,027 INFO L225 Difference]: With dead ends: 274335 [2024-11-27 23:21:01,027 INFO L226 Difference]: Without dead ends: 197028 [2024-11-27 23:21:01,129 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:21:01,131 INFO L435 NwaCegarLoop]: 416 mSDtfsCounter, 388 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1355 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:01,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 1355 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:21:01,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197028 states.