./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-5.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_94dbb302-df10-4fb2-b30d-1d8130af1ec7/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94dbb302-df10-4fb2-b30d-1d8130af1ec7/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_94dbb302-df10-4fb2-b30d-1d8130af1ec7/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94dbb302-df10-4fb2-b30d-1d8130af1ec7/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94dbb302-df10-4fb2-b30d-1d8130af1ec7/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_94dbb302-df10-4fb2-b30d-1d8130af1ec7/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 eb1314039a089ae50ffa2cf06a09d28c366b7983113714c5c1bfc7b71c13fc9d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:25:03,839 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:25:03,961 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94dbb302-df10-4fb2-b30d-1d8130af1ec7/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:25:03,971 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:25:03,971 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:25:04,008 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:25:04,009 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:25:04,009 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:25:04,010 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:25:04,010 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:25:04,010 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:25:04,010 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:25:04,011 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:25:04,011 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:25:04,012 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:25:04,012 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:25:04,013 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:25:04,013 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:25:04,014 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:25:04,014 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:25:04,014 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:25:04,014 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:25:04,015 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:25:04,015 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:25:04,015 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:25:04,016 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:25:04,016 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:25:04,016 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:25:04,016 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:25:04,016 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:25:04,017 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:25:04,017 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:25:04,017 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:25:04,017 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:25:04,017 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:25:04,017 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:25:04,017 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:25:04,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:25:04,018 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:25:04,018 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:25:04,019 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:25:04,019 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:25:04,019 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:25:04,019 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:25:04,019 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:25:04,020 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:25:04,020 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:25:04,020 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:25:04,020 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_94dbb302-df10-4fb2-b30d-1d8130af1ec7/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 -> eb1314039a089ae50ffa2cf06a09d28c366b7983113714c5c1bfc7b71c13fc9d [2024-11-27 23:25:04,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:25:04,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:25:04,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:25:04,509 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:25:04,509 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:25:04,511 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94dbb302-df10-4fb2-b30d-1d8130af1ec7/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-5.i [2024-11-27 23:25:08,490 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94dbb302-df10-4fb2-b30d-1d8130af1ec7/bin/uautomizer-verify-aQ6SnzHsRB/data/63742dee4/a57be825d72e45b482c1a2fa813845fa/FLAGb70a6bf8a [2024-11-27 23:25:09,059 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:25:09,061 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94dbb302-df10-4fb2-b30d-1d8130af1ec7/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-5.i [2024-11-27 23:25:09,078 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94dbb302-df10-4fb2-b30d-1d8130af1ec7/bin/uautomizer-verify-aQ6SnzHsRB/data/63742dee4/a57be825d72e45b482c1a2fa813845fa/FLAGb70a6bf8a [2024-11-27 23:25:09,106 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94dbb302-df10-4fb2-b30d-1d8130af1ec7/bin/uautomizer-verify-aQ6SnzHsRB/data/63742dee4/a57be825d72e45b482c1a2fa813845fa [2024-11-27 23:25:09,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:25:09,111 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:25:09,113 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:25:09,113 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:25:09,123 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:25:09,124 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:25:09" (1/1) ... [2024-11-27 23:25:09,126 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@134137b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:09, skipping insertion in model container [2024-11-27 23:25:09,127 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:25:09" (1/1) ... [2024-11-27 23:25:09,215 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:25:09,462 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_94dbb302-df10-4fb2-b30d-1d8130af1ec7/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-5.i[915,928] [2024-11-27 23:25:09,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:25:09,853 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:25:09,866 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_94dbb302-df10-4fb2-b30d-1d8130af1ec7/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-5.i[915,928] [2024-11-27 23:25:10,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:25:10,112 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:25:10,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:10 WrapperNode [2024-11-27 23:25:10,113 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:25:10,114 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:25:10,114 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:25:10,114 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:25:10,123 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:10" (1/1) ... [2024-11-27 23:25:10,170 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:10" (1/1) ... [2024-11-27 23:25:10,379 INFO L138 Inliner]: procedures = 26, calls = 102, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 879 [2024-11-27 23:25:10,380 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:25:10,381 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:25:10,381 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:25:10,381 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:25:10,396 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:10" (1/1) ... [2024-11-27 23:25:10,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:10" (1/1) ... [2024-11-27 23:25:10,429 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:10" (1/1) ... [2024-11-27 23:25:10,511 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 23:25:10,511 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:10" (1/1) ... [2024-11-27 23:25:10,511 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:10" (1/1) ... [2024-11-27 23:25:10,581 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:10" (1/1) ... [2024-11-27 23:25:10,588 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:10" (1/1) ... [2024-11-27 23:25:10,611 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:10" (1/1) ... [2024-11-27 23:25:10,633 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:10" (1/1) ... [2024-11-27 23:25:10,641 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:10" (1/1) ... [2024-11-27 23:25:10,739 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:25:10,741 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:25:10,741 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:25:10,741 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:25:10,743 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:10" (1/1) ... [2024-11-27 23:25:10,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:25:10,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94dbb302-df10-4fb2-b30d-1d8130af1ec7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:10,792 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94dbb302-df10-4fb2-b30d-1d8130af1ec7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:25:10,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94dbb302-df10-4fb2-b30d-1d8130af1ec7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:25:10,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:25:10,832 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 23:25:10,833 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 23:25:10,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:25:10,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:25:10,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:25:11,110 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:25:11,112 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:25:13,959 INFO L? ?]: Removed 119 outVars from TransFormulas that were not future-live. [2024-11-27 23:25:13,959 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:25:13,999 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:25:13,999 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 23:25:14,004 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:25:14 BoogieIcfgContainer [2024-11-27 23:25:14,004 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:25:14,011 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:25:14,011 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:25:14,023 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:25:14,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:25:09" (1/3) ... [2024-11-27 23:25:14,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17db274f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:25:14, skipping insertion in model container [2024-11-27 23:25:14,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:25:10" (2/3) ... [2024-11-27 23:25:14,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17db274f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:25:14, skipping insertion in model container [2024-11-27 23:25:14,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:25:14" (3/3) ... [2024-11-27 23:25:14,026 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-5.i [2024-11-27 23:25:14,055 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:25:14,060 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount500_file-5.i that has 2 procedures, 357 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 23:25:14,189 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:25:14,208 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;@213a64bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:25:14,210 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 23:25:14,220 INFO L276 IsEmpty]: Start isEmpty. Operand has 357 states, 265 states have (on average 1.5207547169811322) internal successors, (403), 266 states have internal predecessors, (403), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-27 23:25:14,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2024-11-27 23:25:14,279 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:14,283 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:25:14,284 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:14,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:14,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1031988803, now seen corresponding path program 1 times [2024-11-27 23:25:14,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:14,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913700322] [2024-11-27 23:25:14,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:14,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:15,807 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 15488 trivial. 0 not checked. [2024-11-27 23:25:15,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:15,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913700322] [2024-11-27 23:25:15,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913700322] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:15,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484837089] [2024-11-27 23:25:15,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:15,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:15,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94dbb302-df10-4fb2-b30d-1d8130af1ec7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:15,816 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94dbb302-df10-4fb2-b30d-1d8130af1ec7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:15,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94dbb302-df10-4fb2-b30d-1d8130af1ec7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:25:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:16,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 1384 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 23:25:16,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:16,825 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 15488 trivial. 0 not checked. [2024-11-27 23:25:16,826 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:25:16,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484837089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:16,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:25:16,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 23:25:16,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270804157] [2024-11-27 23:25:16,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:16,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:25:16,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:16,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:25:16,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:25:16,893 INFO L87 Difference]: Start difference. First operand has 357 states, 265 states have (on average 1.5207547169811322) internal successors, (403), 266 states have internal predecessors, (403), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 2 states, 2 states have (on average 76.0) internal successors, (152), 2 states have internal predecessors, (152), 2 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 2 states have call successors, (89) [2024-11-27 23:25:17,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:17,032 INFO L93 Difference]: Finished difference Result 707 states and 1245 transitions. [2024-11-27 23:25:17,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:25:17,038 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.0) internal successors, (152), 2 states have internal predecessors, (152), 2 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 2 states have call successors, (89) Word has length 592 [2024-11-27 23:25:17,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:17,059 INFO L225 Difference]: With dead ends: 707 [2024-11-27 23:25:17,059 INFO L226 Difference]: Without dead ends: 353 [2024-11-27 23:25:17,068 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 593 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 23:25:17,072 INFO L435 NwaCegarLoop]: 572 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, 572 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 23:25:17,073 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:25:17,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2024-11-27 23:25:17,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2024-11-27 23:25:17,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 262 states have (on average 1.5038167938931297) internal successors, (394), 262 states have internal predecessors, (394), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-27 23:25:17,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 572 transitions. [2024-11-27 23:25:17,230 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 572 transitions. Word has length 592 [2024-11-27 23:25:17,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:17,234 INFO L471 AbstractCegarLoop]: Abstraction has 353 states and 572 transitions. [2024-11-27 23:25:17,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.0) internal successors, (152), 2 states have internal predecessors, (152), 2 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 2 states have call successors, (89) [2024-11-27 23:25:17,235 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 572 transitions. [2024-11-27 23:25:17,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2024-11-27 23:25:17,262 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:17,263 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:25:17,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94dbb302-df10-4fb2-b30d-1d8130af1ec7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 23:25:17,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94dbb302-df10-4fb2-b30d-1d8130af1ec7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:17,464 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:17,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:17,465 INFO L85 PathProgramCache]: Analyzing trace with hash -967273876, now seen corresponding path program 1 times [2024-11-27 23:25:17,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:17,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039570824] [2024-11-27 23:25:17,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:17,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:18,780 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-27 23:25:18,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:18,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039570824] [2024-11-27 23:25:18,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039570824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:18,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:18,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:25:18,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270949048] [2024-11-27 23:25:18,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:18,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:25:18,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:18,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:25:18,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:25:18,789 INFO L87 Difference]: Start difference. First operand 353 states and 572 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-27 23:25:19,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:19,075 INFO L93 Difference]: Finished difference Result 947 states and 1532 transitions. [2024-11-27 23:25:19,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:25:19,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 593 [2024-11-27 23:25:19,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:19,093 INFO L225 Difference]: With dead ends: 947 [2024-11-27 23:25:19,095 INFO L226 Difference]: Without dead ends: 597 [2024-11-27 23:25:19,097 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:25:19,098 INFO L435 NwaCegarLoop]: 556 mSDtfsCounter, 387 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:19,099 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 1100 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:25:19,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2024-11-27 23:25:19,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 594. [2024-11-27 23:25:19,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 468 states have (on average 1.5235042735042734) internal successors, (713), 469 states have internal predecessors, (713), 123 states have call successors, (123), 2 states have call predecessors, (123), 2 states have return successors, (123), 122 states have call predecessors, (123), 123 states have call successors, (123) [2024-11-27 23:25:19,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 959 transitions. [2024-11-27 23:25:19,249 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 959 transitions. Word has length 593 [2024-11-27 23:25:19,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:19,255 INFO L471 AbstractCegarLoop]: Abstraction has 594 states and 959 transitions. [2024-11-27 23:25:19,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-27 23:25:19,256 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 959 transitions. [2024-11-27 23:25:19,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2024-11-27 23:25:19,285 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:19,286 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:25:19,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:25:19,287 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:19,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:19,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1854496722, now seen corresponding path program 1 times [2024-11-27 23:25:19,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:19,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352016533] [2024-11-27 23:25:19,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:19,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:20,244 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-27 23:25:20,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:20,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352016533] [2024-11-27 23:25:20,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352016533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:20,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:20,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:25:20,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359105185] [2024-11-27 23:25:20,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:20,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:25:20,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:20,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:25:20,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:25:20,255 INFO L87 Difference]: Start difference. First operand 594 states and 959 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-27 23:25:20,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:20,534 INFO L93 Difference]: Finished difference Result 1768 states and 2855 transitions. [2024-11-27 23:25:20,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:25:20,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 593 [2024-11-27 23:25:20,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:20,556 INFO L225 Difference]: With dead ends: 1768 [2024-11-27 23:25:20,558 INFO L226 Difference]: Without dead ends: 1177 [2024-11-27 23:25:20,561 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:25:20,562 INFO L435 NwaCegarLoop]: 987 mSDtfsCounter, 544 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:20,564 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 1541 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:25:20,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2024-11-27 23:25:20,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 639. [2024-11-27 23:25:20,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 513 states have (on average 1.530214424951267) internal successors, (785), 514 states have internal predecessors, (785), 123 states have call successors, (123), 2 states have call predecessors, (123), 2 states have return successors, (123), 122 states have call predecessors, (123), 123 states have call successors, (123) [2024-11-27 23:25:20,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1031 transitions. [2024-11-27 23:25:20,750 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1031 transitions. Word has length 593 [2024-11-27 23:25:20,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:20,757 INFO L471 AbstractCegarLoop]: Abstraction has 639 states and 1031 transitions. [2024-11-27 23:25:20,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-27 23:25:20,758 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1031 transitions. [2024-11-27 23:25:20,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2024-11-27 23:25:20,783 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:20,783 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:25:20,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:25:20,784 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:20,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:20,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1827431120, now seen corresponding path program 1 times [2024-11-27 23:25:20,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:20,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4535920] [2024-11-27 23:25:20,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:20,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:21,733 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-27 23:25:21,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:21,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4535920] [2024-11-27 23:25:21,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4535920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:21,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:21,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:25:21,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429324350] [2024-11-27 23:25:21,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:21,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:25:21,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:21,742 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:25:21,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:25:21,745 INFO L87 Difference]: Start difference. First operand 639 states and 1031 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-27 23:25:21,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:21,936 INFO L93 Difference]: Finished difference Result 1813 states and 2925 transitions. [2024-11-27 23:25:21,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:25:21,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 593 [2024-11-27 23:25:21,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:21,957 INFO L225 Difference]: With dead ends: 1813 [2024-11-27 23:25:21,957 INFO L226 Difference]: Without dead ends: 1177 [2024-11-27 23:25:21,961 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:25:21,962 INFO L435 NwaCegarLoop]: 601 mSDtfsCounter, 503 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:21,963 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 1157 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:25:21,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2024-11-27 23:25:22,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 796. [2024-11-27 23:25:22,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 670 states have (on average 1.5776119402985074) internal successors, (1057), 671 states have internal predecessors, (1057), 123 states have call successors, (123), 2 states have call predecessors, (123), 2 states have return successors, (123), 122 states have call predecessors, (123), 123 states have call successors, (123) [2024-11-27 23:25:22,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1303 transitions. [2024-11-27 23:25:22,178 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1303 transitions. Word has length 593 [2024-11-27 23:25:22,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:22,182 INFO L471 AbstractCegarLoop]: Abstraction has 796 states and 1303 transitions. [2024-11-27 23:25:22,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-27 23:25:22,184 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1303 transitions. [2024-11-27 23:25:22,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2024-11-27 23:25:22,204 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:22,205 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:25:22,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:25:22,206 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:22,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:22,207 INFO L85 PathProgramCache]: Analyzing trace with hash 778592434, now seen corresponding path program 1 times [2024-11-27 23:25:22,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:22,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065820724] [2024-11-27 23:25:22,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:22,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:26,203 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-27 23:25:26,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:26,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065820724] [2024-11-27 23:25:26,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065820724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:26,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:26,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:25:26,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288012007] [2024-11-27 23:25:26,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:26,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:25:26,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:26,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:25:26,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:25:26,208 INFO L87 Difference]: Start difference. First operand 796 states and 1303 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-27 23:25:27,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:27,528 INFO L93 Difference]: Finished difference Result 2770 states and 4572 transitions. [2024-11-27 23:25:27,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:25:27,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 593 [2024-11-27 23:25:27,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:27,545 INFO L225 Difference]: With dead ends: 2770 [2024-11-27 23:25:27,545 INFO L226 Difference]: Without dead ends: 1977 [2024-11-27 23:25:27,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:25:27,549 INFO L435 NwaCegarLoop]: 787 mSDtfsCounter, 663 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 2473 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:27,550 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 2473 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 23:25:27,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2024-11-27 23:25:27,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 948. [2024-11-27 23:25:27,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 731 states have (on average 1.5307797537619698) internal successors, (1119), 732 states have internal predecessors, (1119), 212 states have call successors, (212), 4 states have call predecessors, (212), 4 states have return successors, (212), 211 states have call predecessors, (212), 212 states have call successors, (212) [2024-11-27 23:25:27,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1543 transitions. [2024-11-27 23:25:27,764 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1543 transitions. Word has length 593 [2024-11-27 23:25:27,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:27,768 INFO L471 AbstractCegarLoop]: Abstraction has 948 states and 1543 transitions. [2024-11-27 23:25:27,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-27 23:25:27,769 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1543 transitions. [2024-11-27 23:25:27,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2024-11-27 23:25:27,787 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:27,788 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:25:27,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:25:27,789 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:27,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:27,791 INFO L85 PathProgramCache]: Analyzing trace with hash 524517298, now seen corresponding path program 1 times [2024-11-27 23:25:27,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:27,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630915661] [2024-11-27 23:25:27,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:27,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:34,950 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 39 proven. 225 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-11-27 23:25:34,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:34,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630915661] [2024-11-27 23:25:34,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630915661] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:34,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239978819] [2024-11-27 23:25:34,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:34,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:34,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94dbb302-df10-4fb2-b30d-1d8130af1ec7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:34,956 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94dbb302-df10-4fb2-b30d-1d8130af1ec7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:34,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94dbb302-df10-4fb2-b30d-1d8130af1ec7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:25:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:35,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:25:35,657 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:37,633 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 6864 proven. 180 refuted. 0 times theorem prover too weak. 8620 trivial. 0 not checked. [2024-11-27 23:25:37,634 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:25:38,917 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 84 proven. 180 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-11-27 23:25:38,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239978819] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:25:38,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:25:38,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-27 23:25:38,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901581418] [2024-11-27 23:25:38,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:25:38,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 23:25:38,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:38,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 23:25:38,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:25:38,924 INFO L87 Difference]: Start difference. First operand 948 states and 1543 transitions. Second operand has 12 states, 12 states have (on average 26.583333333333332) internal successors, (319), 12 states have internal predecessors, (319), 4 states have call successors, (224), 2 states have call predecessors, (224), 4 states have return successors, (226), 4 states have call predecessors, (226), 4 states have call successors, (226) [2024-11-27 23:25:41,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:41,874 INFO L93 Difference]: Finished difference Result 2197 states and 3548 transitions. [2024-11-27 23:25:41,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 23:25:41,876 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 26.583333333333332) internal successors, (319), 12 states have internal predecessors, (319), 4 states have call successors, (224), 2 states have call predecessors, (224), 4 states have return successors, (226), 4 states have call predecessors, (226), 4 states have call successors, (226) Word has length 593 [2024-11-27 23:25:41,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:41,895 INFO L225 Difference]: With dead ends: 2197 [2024-11-27 23:25:41,896 INFO L226 Difference]: Without dead ends: 1404 [2024-11-27 23:25:41,902 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1206 GetRequests, 1184 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2024-11-27 23:25:41,909 INFO L435 NwaCegarLoop]: 466 mSDtfsCounter, 1587 mSDsluCounter, 2044 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1601 SdHoareTripleChecker+Valid, 2510 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:41,909 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1601 Valid, 2510 Invalid, 1445 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [221 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-27 23:25:41,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2024-11-27 23:25:42,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1392. [2024-11-27 23:25:42,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1141 states have (on average 1.5241016652059596) internal successors, (1739), 1144 states have internal predecessors, (1739), 238 states have call successors, (238), 12 states have call predecessors, (238), 12 states have return successors, (238), 235 states have call predecessors, (238), 238 states have call successors, (238) [2024-11-27 23:25:42,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 2215 transitions. [2024-11-27 23:25:42,096 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 2215 transitions. Word has length 593 [2024-11-27 23:25:42,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:42,099 INFO L471 AbstractCegarLoop]: Abstraction has 1392 states and 2215 transitions. [2024-11-27 23:25:42,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.583333333333332) internal successors, (319), 12 states have internal predecessors, (319), 4 states have call successors, (224), 2 states have call predecessors, (224), 4 states have return successors, (226), 4 states have call predecessors, (226), 4 states have call successors, (226) [2024-11-27 23:25:42,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 2215 transitions. [2024-11-27 23:25:42,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2024-11-27 23:25:42,109 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:42,110 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:25:42,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94dbb302-df10-4fb2-b30d-1d8130af1ec7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 23:25:42,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94dbb302-df10-4fb2-b30d-1d8130af1ec7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:42,314 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:42,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:42,315 INFO L85 PathProgramCache]: Analyzing trace with hash -287246094, now seen corresponding path program 1 times [2024-11-27 23:25:42,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:42,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134365875] [2024-11-27 23:25:42,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:42,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:49,128 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-27 23:25:49,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:49,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134365875] [2024-11-27 23:25:49,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134365875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:49,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:49,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-27 23:25:49,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094365918] [2024-11-27 23:25:49,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:49,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 23:25:49,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:49,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 23:25:49,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:25:49,134 INFO L87 Difference]: Start difference. First operand 1392 states and 2215 transitions. Second operand has 12 states, 12 states have (on average 12.583333333333334) internal successors, (151), 12 states have internal predecessors, (151), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-27 23:25:54,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:54,576 INFO L93 Difference]: Finished difference Result 6559 states and 10415 transitions. [2024-11-27 23:25:54,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 23:25:54,577 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 12.583333333333334) internal successors, (151), 12 states have internal predecessors, (151), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 593 [2024-11-27 23:25:54,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:54,618 INFO L225 Difference]: With dead ends: 6559 [2024-11-27 23:25:54,618 INFO L226 Difference]: Without dead ends: 5330 [2024-11-27 23:25:54,624 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=109, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:25:54,627 INFO L435 NwaCegarLoop]: 618 mSDtfsCounter, 4105 mSDsluCounter, 2236 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4105 SdHoareTripleChecker+Valid, 2854 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:54,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4105 Valid, 2854 Invalid, 1456 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [463 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-27 23:25:54,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5330 states. [2024-11-27 23:25:54,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5330 to 2672. [2024-11-27 23:25:54,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2672 states, 2418 states have (on average 1.5996691480562448) internal successors, (3868), 2421 states have internal predecessors, (3868), 238 states have call successors, (238), 15 states have call predecessors, (238), 15 states have return successors, (238), 235 states have call predecessors, (238), 238 states have call successors, (238) [2024-11-27 23:25:54,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2672 states to 2672 states and 4344 transitions. [2024-11-27 23:25:54,998 INFO L78 Accepts]: Start accepts. Automaton has 2672 states and 4344 transitions. Word has length 593 [2024-11-27 23:25:55,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:55,003 INFO L471 AbstractCegarLoop]: Abstraction has 2672 states and 4344 transitions. [2024-11-27 23:25:55,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.583333333333334) internal successors, (151), 12 states have internal predecessors, (151), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-27 23:25:55,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2672 states and 4344 transitions. [2024-11-27 23:25:55,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2024-11-27 23:25:55,015 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:55,016 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:25:55,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 23:25:55,016 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:55,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:55,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1347827869, now seen corresponding path program 1 times [2024-11-27 23:25:55,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:55,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495602329] [2024-11-27 23:25:55,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:55,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:58,488 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-27 23:25:58,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:58,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495602329] [2024-11-27 23:25:58,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495602329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:58,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:58,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:25:58,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347713231] [2024-11-27 23:25:58,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:58,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 23:25:58,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:58,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 23:25:58,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:25:58,494 INFO L87 Difference]: Start difference. First operand 2672 states and 4344 transitions. Second operand has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 9 states have internal predecessors, (152), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-27 23:26:03,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:03,763 INFO L93 Difference]: Finished difference Result 8386 states and 13617 transitions. [2024-11-27 23:26:03,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:26:03,764 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 9 states have internal predecessors, (152), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 594 [2024-11-27 23:26:03,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:03,800 INFO L225 Difference]: With dead ends: 8386 [2024-11-27 23:26:03,801 INFO L226 Difference]: Without dead ends: 5881 [2024-11-27 23:26:03,808 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:26:03,810 INFO L435 NwaCegarLoop]: 756 mSDtfsCounter, 1849 mSDsluCounter, 2407 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1849 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:03,812 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1849 Valid, 3163 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1364 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-27 23:26:03,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5881 states. [2024-11-27 23:26:04,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5881 to 3660. [2024-11-27 23:26:04,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3660 states, 3404 states have (on average 1.5963572267920094) internal successors, (5434), 3407 states have internal predecessors, (5434), 238 states have call successors, (238), 17 states have call predecessors, (238), 17 states have return successors, (238), 235 states have call predecessors, (238), 238 states have call successors, (238) [2024-11-27 23:26:04,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 5910 transitions. [2024-11-27 23:26:04,278 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 5910 transitions. Word has length 594 [2024-11-27 23:26:04,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:04,280 INFO L471 AbstractCegarLoop]: Abstraction has 3660 states and 5910 transitions. [2024-11-27 23:26:04,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 9 states have internal predecessors, (152), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-27 23:26:04,281 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 5910 transitions. [2024-11-27 23:26:04,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2024-11-27 23:26:04,295 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:04,295 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:26:04,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 23:26:04,297 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:04,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:04,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1592576791, now seen corresponding path program 1 times [2024-11-27 23:26:04,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:04,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332345608] [2024-11-27 23:26:04,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:04,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:06,141 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-27 23:26:06,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:06,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332345608] [2024-11-27 23:26:06,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332345608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:06,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:06,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:26:06,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531477520] [2024-11-27 23:26:06,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:06,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:26:06,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:06,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:26:06,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:26:06,148 INFO L87 Difference]: Start difference. First operand 3660 states and 5910 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-27 23:26:06,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:06,859 INFO L93 Difference]: Finished difference Result 7908 states and 12848 transitions. [2024-11-27 23:26:06,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:26:06,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 594 [2024-11-27 23:26:06,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:06,885 INFO L225 Difference]: With dead ends: 7908 [2024-11-27 23:26:06,885 INFO L226 Difference]: Without dead ends: 4415 [2024-11-27 23:26:06,893 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:26:06,895 INFO L435 NwaCegarLoop]: 575 mSDtfsCounter, 518 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:06,895 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 1418 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:26:06,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4415 states. [2024-11-27 23:26:07,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4415 to 3660. [2024-11-27 23:26:07,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3660 states, 3404 states have (on average 1.5928319623971798) internal successors, (5422), 3407 states have internal predecessors, (5422), 238 states have call successors, (238), 17 states have call predecessors, (238), 17 states have return successors, (238), 235 states have call predecessors, (238), 238 states have call successors, (238) [2024-11-27 23:26:07,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 5898 transitions. [2024-11-27 23:26:07,269 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 5898 transitions. Word has length 594 [2024-11-27 23:26:07,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:07,271 INFO L471 AbstractCegarLoop]: Abstraction has 3660 states and 5898 transitions. [2024-11-27 23:26:07,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-27 23:26:07,276 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 5898 transitions. [2024-11-27 23:26:07,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2024-11-27 23:26:07,299 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:07,299 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:26:07,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 23:26:07,300 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:07,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:07,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1168930069, now seen corresponding path program 1 times [2024-11-27 23:26:07,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:07,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636445934] [2024-11-27 23:26:07,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:07,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:12,031 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-27 23:26:12,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:12,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636445934] [2024-11-27 23:26:12,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636445934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:12,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:12,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-27 23:26:12,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003807206] [2024-11-27 23:26:12,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:12,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:26:12,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:12,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:26:12,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:26:12,037 INFO L87 Difference]: Start difference. First operand 3660 states and 5898 transitions. Second operand has 11 states, 11 states have (on average 13.818181818181818) internal successors, (152), 11 states have internal predecessors, (152), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-27 23:26:18,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:18,914 INFO L93 Difference]: Finished difference Result 9971 states and 15871 transitions. [2024-11-27 23:26:18,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 23:26:18,917 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.818181818181818) internal successors, (152), 11 states have internal predecessors, (152), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 594 [2024-11-27 23:26:18,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:18,951 INFO L225 Difference]: With dead ends: 9971 [2024-11-27 23:26:18,952 INFO L226 Difference]: Without dead ends: 6478 [2024-11-27 23:26:18,958 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:26:18,959 INFO L435 NwaCegarLoop]: 904 mSDtfsCounter, 2142 mSDsluCounter, 3257 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2142 SdHoareTripleChecker+Valid, 4161 SdHoareTripleChecker+Invalid, 2486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 2224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:18,960 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2142 Valid, 4161 Invalid, 2486 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [262 Valid, 2224 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-11-27 23:26:18,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6478 states. [2024-11-27 23:26:19,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6478 to 4262. [2024-11-27 23:26:19,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4262 states, 3869 states have (on average 1.5629361592142672) internal successors, (6047), 3876 states have internal predecessors, (6047), 363 states have call successors, (363), 29 states have call predecessors, (363), 29 states have return successors, (363), 356 states have call predecessors, (363), 363 states have call successors, (363) [2024-11-27 23:26:19,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4262 states to 4262 states and 6773 transitions. [2024-11-27 23:26:19,859 INFO L78 Accepts]: Start accepts. Automaton has 4262 states and 6773 transitions. Word has length 594 [2024-11-27 23:26:19,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:19,861 INFO L471 AbstractCegarLoop]: Abstraction has 4262 states and 6773 transitions. [2024-11-27 23:26:19,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.818181818181818) internal successors, (152), 11 states have internal predecessors, (152), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-27 23:26:19,862 INFO L276 IsEmpty]: Start isEmpty. Operand 4262 states and 6773 transitions. [2024-11-27 23:26:19,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2024-11-27 23:26:19,875 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:19,875 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:26:19,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 23:26:19,876 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:19,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:19,879 INFO L85 PathProgramCache]: Analyzing trace with hash -587680399, now seen corresponding path program 1 times [2024-11-27 23:26:19,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:19,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280513124] [2024-11-27 23:26:19,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:19,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:21,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:27,792 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-27 23:26:27,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:27,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280513124] [2024-11-27 23:26:27,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280513124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:27,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:27,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-27 23:26:27,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043641416] [2024-11-27 23:26:27,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:27,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 23:26:27,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:27,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 23:26:27,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2024-11-27 23:26:27,798 INFO L87 Difference]: Start difference. First operand 4262 states and 6773 transitions. Second operand has 16 states, 16 states have (on average 9.5) internal successors, (152), 16 states have internal predecessors, (152), 2 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2024-11-27 23:26:42,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:42,059 INFO L93 Difference]: Finished difference Result 25380 states and 40252 transitions. [2024-11-27 23:26:42,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-27 23:26:42,060 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.5) internal successors, (152), 16 states have internal predecessors, (152), 2 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) Word has length 594 [2024-11-27 23:26:42,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:42,224 INFO L225 Difference]: With dead ends: 25380 [2024-11-27 23:26:42,224 INFO L226 Difference]: Without dead ends: 21285 [2024-11-27 23:26:42,238 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=410, Invalid=1396, Unknown=0, NotChecked=0, Total=1806 [2024-11-27 23:26:42,240 INFO L435 NwaCegarLoop]: 776 mSDtfsCounter, 4982 mSDsluCounter, 8556 mSDsCounter, 0 mSdLazyCounter, 5127 mSolverCounterSat, 923 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4982 SdHoareTripleChecker+Valid, 9332 SdHoareTripleChecker+Invalid, 6050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 923 IncrementalHoareTripleChecker+Valid, 5127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:42,241 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4982 Valid, 9332 Invalid, 6050 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [923 Valid, 5127 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2024-11-27 23:26:42,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21285 states. [2024-11-27 23:26:44,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21285 to 14037. [2024-11-27 23:26:44,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14037 states, 13090 states have (on average 1.5727272727272728) internal successors, (20587), 13116 states have internal predecessors, (20587), 867 states have call successors, (867), 79 states have call predecessors, (867), 79 states have return successors, (867), 841 states have call predecessors, (867), 867 states have call successors, (867) [2024-11-27 23:26:44,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14037 states to 14037 states and 22321 transitions. [2024-11-27 23:26:44,529 INFO L78 Accepts]: Start accepts. Automaton has 14037 states and 22321 transitions. Word has length 594 [2024-11-27 23:26:44,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:44,531 INFO L471 AbstractCegarLoop]: Abstraction has 14037 states and 22321 transitions. [2024-11-27 23:26:44,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.5) internal successors, (152), 16 states have internal predecessors, (152), 2 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2024-11-27 23:26:44,532 INFO L276 IsEmpty]: Start isEmpty. Operand 14037 states and 22321 transitions. [2024-11-27 23:26:44,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2024-11-27 23:26:44,571 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:44,572 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:26:44,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 23:26:44,572 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:44,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:44,573 INFO L85 PathProgramCache]: Analyzing trace with hash -312920785, now seen corresponding path program 1 times [2024-11-27 23:26:44,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:44,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074261760] [2024-11-27 23:26:44,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:44,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:57,007 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-27 23:26:57,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:57,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074261760] [2024-11-27 23:26:57,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074261760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:57,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:57,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-27 23:26:57,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229318608] [2024-11-27 23:26:57,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:57,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 23:26:57,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:57,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 23:26:57,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2024-11-27 23:26:57,013 INFO L87 Difference]: Start difference. First operand 14037 states and 22321 transitions. Second operand has 17 states, 17 states have (on average 8.941176470588236) internal successors, (152), 17 states have internal predecessors, (152), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-27 23:27:15,226 WARN L286 SmtUtils]: Spent 8.27s on a formula simplification. DAG size of input: 120 DAG size of output: 88 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 23:27:26,413 WARN L286 SmtUtils]: Spent 8.32s on a formula simplification. DAG size of input: 126 DAG size of output: 93 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 23:27:45,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:45,732 INFO L93 Difference]: Finished difference Result 104109 states and 166498 transitions. [2024-11-27 23:27:45,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-27 23:27:45,733 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 8.941176470588236) internal successors, (152), 17 states have internal predecessors, (152), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 594 [2024-11-27 23:27:45,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:46,186 INFO L225 Difference]: With dead ends: 104109 [2024-11-27 23:27:46,186 INFO L226 Difference]: Without dead ends: 90239 [2024-11-27 23:27:46,223 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 25.1s TimeCoverageRelationStatistics Valid=276, Invalid=1056, Unknown=0, NotChecked=0, Total=1332 [2024-11-27 23:27:46,224 INFO L435 NwaCegarLoop]: 1233 mSDtfsCounter, 9450 mSDsluCounter, 9035 mSDsCounter, 0 mSdLazyCounter, 6025 mSolverCounterSat, 1434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9450 SdHoareTripleChecker+Valid, 10268 SdHoareTripleChecker+Invalid, 7459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1434 IncrementalHoareTripleChecker+Valid, 6025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:46,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9450 Valid, 10268 Invalid, 7459 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1434 Valid, 6025 Invalid, 0 Unknown, 0 Unchecked, 20.5s Time] [2024-11-27 23:27:46,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90239 states. [2024-11-27 23:27:51,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90239 to 32951. [2024-11-27 23:27:51,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32951 states, 30487 states have (on average 1.561649227539607) internal successors, (47610), 30567 states have internal predecessors, (47610), 2235 states have call successors, (2235), 228 states have call predecessors, (2235), 228 states have return successors, (2235), 2155 states have call predecessors, (2235), 2235 states have call successors, (2235) [2024-11-27 23:27:51,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32951 states to 32951 states and 52080 transitions. [2024-11-27 23:27:51,458 INFO L78 Accepts]: Start accepts. Automaton has 32951 states and 52080 transitions. Word has length 594 [2024-11-27 23:27:51,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:51,460 INFO L471 AbstractCegarLoop]: Abstraction has 32951 states and 52080 transitions. [2024-11-27 23:27:51,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.941176470588236) internal successors, (152), 17 states have internal predecessors, (152), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-27 23:27:51,462 INFO L276 IsEmpty]: Start isEmpty. Operand 32951 states and 52080 transitions. [2024-11-27 23:27:51,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2024-11-27 23:27:51,672 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:51,672 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:27:51,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 23:27:51,673 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:51,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:51,674 INFO L85 PathProgramCache]: Analyzing trace with hash -202091356, now seen corresponding path program 1 times [2024-11-27 23:27:51,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:51,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132072793] [2024-11-27 23:27:51,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:51,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:11,985 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-27 23:28:11,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:11,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132072793] [2024-11-27 23:28:11,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132072793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:11,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:28:11,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-11-27 23:28:11,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36849983] [2024-11-27 23:28:11,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:11,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-27 23:28:11,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:11,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-27 23:28:11,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2024-11-27 23:28:11,989 INFO L87 Difference]: Start difference. First operand 32951 states and 52080 transitions. Second operand has 23 states, 23 states have (on average 6.608695652173913) internal successors, (152), 23 states have internal predecessors, (152), 2 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2024-11-27 23:29:56,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:56,613 INFO L93 Difference]: Finished difference Result 94974 states and 150656 transitions. [2024-11-27 23:29:56,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-27 23:29:56,614 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.608695652173913) internal successors, (152), 23 states have internal predecessors, (152), 2 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) Word has length 594 [2024-11-27 23:29:56,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:56,845 INFO L225 Difference]: With dead ends: 94974 [2024-11-27 23:29:56,845 INFO L226 Difference]: Without dead ends: 81104 [2024-11-27 23:29:56,878 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 54.1s TimeCoverageRelationStatistics Valid=775, Invalid=2765, Unknown=0, NotChecked=0, Total=3540 [2024-11-27 23:29:56,879 INFO L435 NwaCegarLoop]: 1109 mSDtfsCounter, 11518 mSDsluCounter, 14254 mSDsCounter, 0 mSdLazyCounter, 11544 mSolverCounterSat, 787 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11518 SdHoareTripleChecker+Valid, 15363 SdHoareTripleChecker+Invalid, 12331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 787 IncrementalHoareTripleChecker+Valid, 11544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:56,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11518 Valid, 15363 Invalid, 12331 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [787 Valid, 11544 Invalid, 0 Unknown, 0 Unchecked, 49.6s Time] [2024-11-27 23:29:56,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81104 states. [2024-11-27 23:30:00,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81104 to 31476. [2024-11-27 23:30:00,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31476 states, 29263 states have (on average 1.5690804087072412) internal successors, (45916), 29331 states have internal predecessors, (45916), 2005 states have call successors, (2005), 207 states have call predecessors, (2005), 207 states have return successors, (2005), 1937 states have call predecessors, (2005), 2005 states have call successors, (2005) [2024-11-27 23:30:00,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31476 states to 31476 states and 49926 transitions. [2024-11-27 23:30:00,407 INFO L78 Accepts]: Start accepts. Automaton has 31476 states and 49926 transitions. Word has length 594 [2024-11-27 23:30:00,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:30:00,408 INFO L471 AbstractCegarLoop]: Abstraction has 31476 states and 49926 transitions. [2024-11-27 23:30:00,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.608695652173913) internal successors, (152), 23 states have internal predecessors, (152), 2 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2024-11-27 23:30:00,409 INFO L276 IsEmpty]: Start isEmpty. Operand 31476 states and 49926 transitions. [2024-11-27 23:30:00,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2024-11-27 23:30:00,442 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:00,442 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:30:00,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 23:30:00,442 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:30:00,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:00,443 INFO L85 PathProgramCache]: Analyzing trace with hash 455102254, now seen corresponding path program 1 times [2024-11-27 23:30:00,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:30:00,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059326670] [2024-11-27 23:30:00,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:00,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:30:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:30:10,490 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-27 23:30:10,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:30:10,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059326670] [2024-11-27 23:30:10,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059326670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:30:10,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:30:10,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-27 23:30:10,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245032308] [2024-11-27 23:30:10,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:30:10,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 23:30:10,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:30:10,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 23:30:10,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-11-27 23:30:10,493 INFO L87 Difference]: Start difference. First operand 31476 states and 49926 transitions. Second operand has 18 states, 18 states have (on average 8.444444444444445) internal successors, (152), 18 states have internal predecessors, (152), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-27 23:30:35,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:30:35,925 INFO L93 Difference]: Finished difference Result 91170 states and 144843 transitions. [2024-11-27 23:30:35,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-27 23:30:35,926 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.444444444444445) internal successors, (152), 18 states have internal predecessors, (152), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 594 [2024-11-27 23:30:35,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:30:36,085 INFO L225 Difference]: With dead ends: 91170 [2024-11-27 23:30:36,085 INFO L226 Difference]: Without dead ends: 75947 [2024-11-27 23:30:36,108 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=504, Invalid=1566, Unknown=0, NotChecked=0, Total=2070 [2024-11-27 23:30:36,109 INFO L435 NwaCegarLoop]: 1209 mSDtfsCounter, 7325 mSDsluCounter, 9527 mSDsCounter, 0 mSdLazyCounter, 6404 mSolverCounterSat, 1618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7325 SdHoareTripleChecker+Valid, 10736 SdHoareTripleChecker+Invalid, 8022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1618 IncrementalHoareTripleChecker+Valid, 6404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:30:36,109 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7325 Valid, 10736 Invalid, 8022 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1618 Valid, 6404 Invalid, 0 Unknown, 0 Unchecked, 15.5s Time] [2024-11-27 23:30:36,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75947 states. [2024-11-27 23:30:39,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75947 to 40173. [2024-11-27 23:30:39,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40173 states, 37765 states have (on average 1.585197934595525) internal successors, (59865), 37836 states have internal predecessors, (59865), 2185 states have call successors, (2185), 222 states have call predecessors, (2185), 222 states have return successors, (2185), 2114 states have call predecessors, (2185), 2185 states have call successors, (2185) [2024-11-27 23:30:39,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40173 states to 40173 states and 64235 transitions. [2024-11-27 23:30:39,314 INFO L78 Accepts]: Start accepts. Automaton has 40173 states and 64235 transitions. Word has length 594 [2024-11-27 23:30:39,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:30:39,315 INFO L471 AbstractCegarLoop]: Abstraction has 40173 states and 64235 transitions. [2024-11-27 23:30:39,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.444444444444445) internal successors, (152), 18 states have internal predecessors, (152), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-27 23:30:39,316 INFO L276 IsEmpty]: Start isEmpty. Operand 40173 states and 64235 transitions. [2024-11-27 23:30:39,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2024-11-27 23:30:39,359 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:39,359 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:30:39,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 23:30:39,360 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:30:39,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:39,360 INFO L85 PathProgramCache]: Analyzing trace with hash 729861868, now seen corresponding path program 1 times [2024-11-27 23:30:39,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:30:39,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952347757] [2024-11-27 23:30:39,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:39,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:30:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:30:42,569 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-27 23:30:42,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:30:42,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952347757] [2024-11-27 23:30:42,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952347757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:30:42,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:30:42,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-27 23:30:42,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874479695] [2024-11-27 23:30:42,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:30:42,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 23:30:42,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:30:42,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 23:30:42,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:30:42,572 INFO L87 Difference]: Start difference. First operand 40173 states and 64235 transitions. Second operand has 12 states, 12 states have (on average 12.666666666666666) internal successors, (152), 12 states have internal predecessors, (152), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-27 23:30:55,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:30:55,880 INFO L93 Difference]: Finished difference Result 141182 states and 225010 transitions. [2024-11-27 23:30:55,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 23:30:55,881 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 12.666666666666666) internal successors, (152), 12 states have internal predecessors, (152), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 594 [2024-11-27 23:30:55,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:30:56,058 INFO L225 Difference]: With dead ends: 141182 [2024-11-27 23:30:56,059 INFO L226 Difference]: Without dead ends: 101188 [2024-11-27 23:30:56,110 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=168, Invalid=482, Unknown=0, NotChecked=0, Total=650 [2024-11-27 23:30:56,111 INFO L435 NwaCegarLoop]: 1197 mSDtfsCounter, 4444 mSDsluCounter, 7775 mSDsCounter, 0 mSdLazyCounter, 2827 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4444 SdHoareTripleChecker+Valid, 8972 SdHoareTripleChecker+Invalid, 3685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 2827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:30:56,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4444 Valid, 8972 Invalid, 3685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [858 Valid, 2827 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-27 23:30:56,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101188 states. [2024-11-27 23:31:00,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101188 to 57799. [2024-11-27 23:31:00,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57799 states, 54635 states have (on average 1.5863640523473963) internal successors, (86671), 54738 states have internal predecessors, (86671), 2857 states have call successors, (2857), 306 states have call predecessors, (2857), 306 states have return successors, (2857), 2754 states have call predecessors, (2857), 2857 states have call successors, (2857) [2024-11-27 23:31:01,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57799 states to 57799 states and 92385 transitions. [2024-11-27 23:31:01,112 INFO L78 Accepts]: Start accepts. Automaton has 57799 states and 92385 transitions. Word has length 594 [2024-11-27 23:31:01,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:01,113 INFO L471 AbstractCegarLoop]: Abstraction has 57799 states and 92385 transitions. [2024-11-27 23:31:01,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.666666666666666) internal successors, (152), 12 states have internal predecessors, (152), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-27 23:31:01,113 INFO L276 IsEmpty]: Start isEmpty. Operand 57799 states and 92385 transitions. [2024-11-27 23:31:01,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2024-11-27 23:31:01,171 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:01,171 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:31:01,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 23:31:01,171 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:01,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:01,172 INFO L85 PathProgramCache]: Analyzing trace with hash 2071003953, now seen corresponding path program 1 times [2024-11-27 23:31:01,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:01,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505807463] [2024-11-27 23:31:01,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:01,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:04,324 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 63 proven. 201 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-11-27 23:31:04,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:04,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505807463] [2024-11-27 23:31:04,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505807463] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:04,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084714027] [2024-11-27 23:31:04,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:04,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:04,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94dbb302-df10-4fb2-b30d-1d8130af1ec7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:04,333 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94dbb302-df10-4fb2-b30d-1d8130af1ec7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:04,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94dbb302-df10-4fb2-b30d-1d8130af1ec7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:31:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:04,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-27 23:31:04,849 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:07,747 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 9914 proven. 318 refuted. 0 times theorem prover too weak. 5432 trivial. 0 not checked. [2024-11-27 23:31:07,747 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:31:09,692 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 204 proven. 321 refuted. 0 times theorem prover too weak. 15139 trivial. 0 not checked. [2024-11-27 23:31:09,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084714027] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:31:09,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:31:09,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 11] total 24 [2024-11-27 23:31:09,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185194818] [2024-11-27 23:31:09,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:31:09,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-27 23:31:09,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:09,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-27 23:31:09,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2024-11-27 23:31:09,696 INFO L87 Difference]: Start difference. First operand 57799 states and 92385 transitions. Second operand has 24 states, 24 states have (on average 16.375) internal successors, (393), 24 states have internal predecessors, (393), 7 states have call successors, (250), 4 states have call predecessors, (250), 9 states have return successors, (251), 7 states have call predecessors, (251), 7 states have call successors, (251) [2024-11-27 23:31:47,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:47,469 INFO L93 Difference]: Finished difference Result 391754 states and 620802 transitions. [2024-11-27 23:31:47,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2024-11-27 23:31:47,470 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 16.375) internal successors, (393), 24 states have internal predecessors, (393), 7 states have call successors, (250), 4 states have call predecessors, (250), 9 states have return successors, (251), 7 states have call predecessors, (251), 7 states have call successors, (251) Word has length 594 [2024-11-27 23:31:47,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:48,085 INFO L225 Difference]: With dead ends: 391754 [2024-11-27 23:31:48,085 INFO L226 Difference]: Without dead ends: 334134 [2024-11-27 23:31:48,176 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1345 GetRequests, 1192 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9755 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3845, Invalid=20025, Unknown=0, NotChecked=0, Total=23870 [2024-11-27 23:31:48,177 INFO L435 NwaCegarLoop]: 985 mSDtfsCounter, 7221 mSDsluCounter, 8390 mSDsCounter, 0 mSdLazyCounter, 6016 mSolverCounterSat, 1976 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7241 SdHoareTripleChecker+Valid, 9375 SdHoareTripleChecker+Invalid, 7992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1976 IncrementalHoareTripleChecker+Valid, 6016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:48,177 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7241 Valid, 9375 Invalid, 7992 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1976 Valid, 6016 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2024-11-27 23:31:48,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334134 states.