./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-multidimensional/init-non-constant-3-u.c --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_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/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_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-multidimensional/init-non-constant-3-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/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_a2c61376-cb5b-4fa8-897d-8c90c691409a/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 df76811034b688387cfe28dd1eb6de91c21580662ac8ddb8163b41c1d6179172 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:09:16,540 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:09:16,619 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:09:16,624 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:09:16,624 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:09:16,647 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:09:16,647 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:09:16,647 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:09:16,648 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:09:16,648 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:09:16,648 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:09:16,648 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:09:16,648 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:09:16,649 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:09:16,649 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:09:16,649 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:09:16,649 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:09:16,649 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:09:16,649 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:09:16,649 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:09:16,649 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:09:16,649 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:09:16,650 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:09:16,650 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:09:16,650 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:09:16,650 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:09:16,650 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:09:16,650 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:09:16,650 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:09:16,650 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:09:16,650 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:09:16,651 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:09:16,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:09:16,651 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:09:16,651 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:09:16,651 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:09:16,651 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:09:16,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:09:16,651 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:09:16,652 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:09:16,652 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:09:16,652 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:09:16,652 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:09:16,652 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:09:16,652 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:09:16,652 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:09:16,652 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:09:16,652 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:09:16,652 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_a2c61376-cb5b-4fa8-897d-8c90c691409a/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 -> df76811034b688387cfe28dd1eb6de91c21580662ac8ddb8163b41c1d6179172 [2024-11-28 04:09:17,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:09:17,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:09:17,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:09:17,084 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:09:17,084 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:09:17,086 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/array-multidimensional/init-non-constant-3-u.c [2024-11-28 04:09:20,117 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/data/f98bf4b38/19398fac09b3423bafe2fc97df5a46c1/FLAGac50504c0 [2024-11-28 04:09:20,385 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:09:20,389 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/sv-benchmarks/c/array-multidimensional/init-non-constant-3-u.c [2024-11-28 04:09:20,400 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/data/f98bf4b38/19398fac09b3423bafe2fc97df5a46c1/FLAGac50504c0 [2024-11-28 04:09:20,432 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/data/f98bf4b38/19398fac09b3423bafe2fc97df5a46c1 [2024-11-28 04:09:20,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:09:20,438 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:09:20,439 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:09:20,441 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:09:20,447 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:09:20,448 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:09:20" (1/1) ... [2024-11-28 04:09:20,449 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e937708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:20, skipping insertion in model container [2024-11-28 04:09:20,451 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:09:20" (1/1) ... [2024-11-28 04:09:20,473 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:09:20,666 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_a2c61376-cb5b-4fa8-897d-8c90c691409a/sv-benchmarks/c/array-multidimensional/init-non-constant-3-u.c[333,346] [2024-11-28 04:09:20,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:09:20,715 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:09:20,731 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_a2c61376-cb5b-4fa8-897d-8c90c691409a/sv-benchmarks/c/array-multidimensional/init-non-constant-3-u.c[333,346] [2024-11-28 04:09:20,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:09:20,759 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:09:20,760 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:20 WrapperNode [2024-11-28 04:09:20,761 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:09:20,763 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:09:20,763 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:09:20,763 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:09:20,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:20" (1/1) ... [2024-11-28 04:09:20,779 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:20" (1/1) ... [2024-11-28 04:09:20,801 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2024-11-28 04:09:20,802 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:09:20,803 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:09:20,804 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:09:20,804 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:09:20,813 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:20" (1/1) ... [2024-11-28 04:09:20,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:20" (1/1) ... [2024-11-28 04:09:20,814 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:20" (1/1) ... [2024-11-28 04:09:20,839 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-28 04:09:20,839 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:20" (1/1) ... [2024-11-28 04:09:20,839 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:20" (1/1) ... [2024-11-28 04:09:20,846 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:20" (1/1) ... [2024-11-28 04:09:20,847 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:20" (1/1) ... [2024-11-28 04:09:20,858 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:20" (1/1) ... [2024-11-28 04:09:20,859 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:20" (1/1) ... [2024-11-28 04:09:20,860 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:20" (1/1) ... [2024-11-28 04:09:20,862 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:09:20,866 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:09:20,866 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:09:20,866 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:09:20,869 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:20" (1/1) ... [2024-11-28 04:09:20,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:09:20,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:09:20,904 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:09:20,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:09:20,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:09:20,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:09:20,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:09:20,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:09:20,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:09:20,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:09:20,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:09:20,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:09:20,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:09:20,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:09:20,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:09:21,007 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:09:21,009 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:09:21,182 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-28 04:09:21,182 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:09:21,192 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:09:21,192 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-28 04:09:21,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:09:21 BoogieIcfgContainer [2024-11-28 04:09:21,193 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:09:21,195 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:09:21,195 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:09:21,201 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:09:21,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:09:20" (1/3) ... [2024-11-28 04:09:21,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b48241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:09:21, skipping insertion in model container [2024-11-28 04:09:21,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:20" (2/3) ... [2024-11-28 04:09:21,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b48241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:09:21, skipping insertion in model container [2024-11-28 04:09:21,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:09:21" (3/3) ... [2024-11-28 04:09:21,204 INFO L128 eAbstractionObserver]: Analyzing ICFG init-non-constant-3-u.c [2024-11-28 04:09:21,221 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:09:21,223 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG init-non-constant-3-u.c that has 1 procedures, 27 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2024-11-28 04:09:21,300 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:09:21,319 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;@40077ece, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:09:21,319 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:09:21,325 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.56) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:21,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 04:09:21,333 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:09:21,334 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:09:21,336 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:09:21,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:09:21,345 INFO L85 PathProgramCache]: Analyzing trace with hash -75315821, now seen corresponding path program 1 times [2024-11-28 04:09:21,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:09:21,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161707495] [2024-11-28 04:09:21,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:09:21,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:09:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:09:21,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:09:21,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:09:21,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161707495] [2024-11-28 04:09:21,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161707495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:09:21,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:09:21,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:09:21,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98209982] [2024-11-28 04:09:21,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:09:21,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:09:21,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:09:21,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:09:21,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:09:21,810 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.56) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:21,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:09:21,901 INFO L93 Difference]: Finished difference Result 60 states and 90 transitions. [2024-11-28 04:09:21,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:09:21,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-28 04:09:21,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:09:21,911 INFO L225 Difference]: With dead ends: 60 [2024-11-28 04:09:21,912 INFO L226 Difference]: Without dead ends: 31 [2024-11-28 04:09:21,915 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 [2024-11-28 04:09:21,918 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 9 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:09:21,918 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 38 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:09:21,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-28 04:09:21,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 24. [2024-11-28 04:09:21,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:21,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2024-11-28 04:09:21,950 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 12 [2024-11-28 04:09:21,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:09:21,951 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2024-11-28 04:09:21,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:21,951 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2024-11-28 04:09:21,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 04:09:21,952 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:09:21,952 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:09:21,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:09:21,952 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:09:21,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:09:21,953 INFO L85 PathProgramCache]: Analyzing trace with hash 38174891, now seen corresponding path program 1 times [2024-11-28 04:09:21,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:09:21,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110830542] [2024-11-28 04:09:21,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:09:21,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:09:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:09:22,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:09:22,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:09:22,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110830542] [2024-11-28 04:09:22,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110830542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:09:22,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:09:22,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:09:22,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421430487] [2024-11-28 04:09:22,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:09:22,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:09:22,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:09:22,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:09:22,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:09:22,108 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:22,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:09:22,193 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2024-11-28 04:09:22,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:09:22,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-28 04:09:22,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:09:22,195 INFO L225 Difference]: With dead ends: 59 [2024-11-28 04:09:22,195 INFO L226 Difference]: Without dead ends: 38 [2024-11-28 04:09:22,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:09:22,197 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 54 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:09:22,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 23 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:09:22,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-28 04:09:22,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2024-11-28 04:09:22,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:22,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2024-11-28 04:09:22,209 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 16 [2024-11-28 04:09:22,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:09:22,209 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2024-11-28 04:09:22,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:22,210 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2024-11-28 04:09:22,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 04:09:22,210 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:09:22,210 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:09:22,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:09:22,211 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:09:22,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:09:22,216 INFO L85 PathProgramCache]: Analyzing trace with hash -322065611, now seen corresponding path program 1 times [2024-11-28 04:09:22,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:09:22,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799531984] [2024-11-28 04:09:22,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:09:22,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:09:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:09:22,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:09:22,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:09:22,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799531984] [2024-11-28 04:09:22,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799531984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:09:22,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:09:22,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:09:22,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411673747] [2024-11-28 04:09:22,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:09:22,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:09:22,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:09:22,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:09:22,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:09:22,394 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:22,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:09:22,463 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2024-11-28 04:09:22,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:09:22,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-28 04:09:22,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:09:22,465 INFO L225 Difference]: With dead ends: 57 [2024-11-28 04:09:22,465 INFO L226 Difference]: Without dead ends: 34 [2024-11-28 04:09:22,465 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:09:22,466 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 29 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:09:22,467 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 26 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:09:22,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-28 04:09:22,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2024-11-28 04:09:22,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:22,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2024-11-28 04:09:22,475 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 20 [2024-11-28 04:09:22,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:09:22,475 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2024-11-28 04:09:22,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:22,475 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2024-11-28 04:09:22,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-28 04:09:22,478 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:09:22,478 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:09:22,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:09:22,479 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:09:22,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:09:22,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1343680263, now seen corresponding path program 1 times [2024-11-28 04:09:22,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:09:22,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384045659] [2024-11-28 04:09:22,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:09:22,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:09:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:09:22,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:09:22,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:09:22,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384045659] [2024-11-28 04:09:22,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384045659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:09:22,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855407897] [2024-11-28 04:09:22,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:09:22,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:09:22,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:09:22,689 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:09:22,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:09:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:09:22,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:09:22,795 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:09:22,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:09:22,900 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:09:22,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:09:22,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855407897] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:09:22,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:09:22,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-28 04:09:22,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016011861] [2024-11-28 04:09:22,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:09:22,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:09:22,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:09:22,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:09:22,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:09:22,954 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:23,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:09:23,118 INFO L93 Difference]: Finished difference Result 77 states and 93 transitions. [2024-11-28 04:09:23,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:09:23,119 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-28 04:09:23,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:09:23,120 INFO L225 Difference]: With dead ends: 77 [2024-11-28 04:09:23,120 INFO L226 Difference]: Without dead ends: 52 [2024-11-28 04:09:23,122 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:09:23,123 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 65 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:09:23,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 47 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:09:23,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-28 04:09:23,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2024-11-28 04:09:23,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2) internal successors, (54), 45 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:23,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2024-11-28 04:09:23,142 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 22 [2024-11-28 04:09:23,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:09:23,143 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2024-11-28 04:09:23,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:23,143 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2024-11-28 04:09:23,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-28 04:09:23,144 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:09:23,145 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:09:23,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:09:23,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:09:23,347 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:09:23,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:09:23,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1980892091, now seen corresponding path program 2 times [2024-11-28 04:09:23,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:09:23,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274228247] [2024-11-28 04:09:23,348 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:09:23,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:09:23,407 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:09:23,407 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:09:23,591 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:09:23,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:09:23,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274228247] [2024-11-28 04:09:23,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274228247] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:09:23,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259324291] [2024-11-28 04:09:23,592 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:09:23,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:09:23,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:09:23,595 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:09:23,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:09:23,736 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:09:23,736 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:09:23,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:09:23,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:09:23,931 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:09:23,931 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:09:24,097 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:09:24,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259324291] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:09:24,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:09:24,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 16 [2024-11-28 04:09:24,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054866016] [2024-11-28 04:09:24,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:09:24,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 04:09:24,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:09:24,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 04:09:24,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:09:24,102 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:25,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:09:25,140 INFO L93 Difference]: Finished difference Result 334 states and 392 transitions. [2024-11-28 04:09:25,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-28 04:09:25,141 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-28 04:09:25,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:09:25,143 INFO L225 Difference]: With dead ends: 334 [2024-11-28 04:09:25,143 INFO L226 Difference]: Without dead ends: 291 [2024-11-28 04:09:25,144 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=629, Invalid=1093, Unknown=0, NotChecked=0, Total=1722 [2024-11-28 04:09:25,145 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 877 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:09:25,145 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 81 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:09:25,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-28 04:09:25,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 110. [2024-11-28 04:09:25,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.1559633027522935) internal successors, (126), 109 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:25,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 126 transitions. [2024-11-28 04:09:25,182 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 126 transitions. Word has length 28 [2024-11-28 04:09:25,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:09:25,182 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 126 transitions. [2024-11-28 04:09:25,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:25,182 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 126 transitions. [2024-11-28 04:09:25,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 04:09:25,184 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:09:25,184 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:09:25,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:09:25,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:09:25,390 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:09:25,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:09:25,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1314162905, now seen corresponding path program 3 times [2024-11-28 04:09:25,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:09:25,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416412496] [2024-11-28 04:09:25,392 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:09:25,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:09:25,445 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 04:09:25,449 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:09:25,548 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 228 proven. 3 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-11-28 04:09:25,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:09:25,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416412496] [2024-11-28 04:09:25,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416412496] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:09:25,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38009948] [2024-11-28 04:09:25,550 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:09:25,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:09:25,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:09:25,553 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:09:25,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:09:25,638 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 04:09:25,639 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:09:25,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:09:25,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:09:25,888 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 230 proven. 1 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-11-28 04:09:25,889 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:09:26,041 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 3 proven. 228 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-11-28 04:09:26,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38009948] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:09:26,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:09:26,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-28 04:09:26,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517257687] [2024-11-28 04:09:26,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:09:26,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:09:26,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:09:26,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:09:26,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:09:26,046 INFO L87 Difference]: Start difference. First operand 110 states and 126 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:26,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:09:26,278 INFO L93 Difference]: Finished difference Result 473 states and 548 transitions. [2024-11-28 04:09:26,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:09:26,278 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-28 04:09:26,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:09:26,283 INFO L225 Difference]: With dead ends: 473 [2024-11-28 04:09:26,285 INFO L226 Difference]: Without dead ends: 392 [2024-11-28 04:09:26,286 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:09:26,287 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 133 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:09:26,289 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 54 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:09:26,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-11-28 04:09:26,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 386. [2024-11-28 04:09:26,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 1.1454545454545455) internal successors, (441), 385 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:26,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 441 transitions. [2024-11-28 04:09:26,405 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 441 transitions. Word has length 68 [2024-11-28 04:09:26,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:09:26,406 INFO L471 AbstractCegarLoop]: Abstraction has 386 states and 441 transitions. [2024-11-28 04:09:26,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:26,406 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 441 transitions. [2024-11-28 04:09:26,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-28 04:09:26,416 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:09:26,417 INFO L218 NwaCegarLoop]: trace histogram [80, 80, 8, 8, 8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:09:26,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:09:26,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 04:09:26,617 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:09:26,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:09:26,618 INFO L85 PathProgramCache]: Analyzing trace with hash -351273645, now seen corresponding path program 4 times [2024-11-28 04:09:26,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:09:26,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742136197] [2024-11-28 04:09:26,618 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:09:26,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:09:26,967 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:09:26,968 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:09:28,036 INFO L134 CoverageAnalysis]: Checked inductivity of 7094 backedges. 3612 proven. 1402 refuted. 0 times theorem prover too weak. 2080 trivial. 0 not checked. [2024-11-28 04:09:28,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:09:28,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742136197] [2024-11-28 04:09:28,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742136197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:09:28,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256599067] [2024-11-28 04:09:28,037 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:09:28,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:09:28,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:09:28,040 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:09:28,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:09:28,326 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:09:28,327 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:09:28,331 INFO L256 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 04:09:28,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:09:29,183 INFO L134 CoverageAnalysis]: Checked inductivity of 7094 backedges. 3677 proven. 1367 refuted. 0 times theorem prover too weak. 2050 trivial. 0 not checked. [2024-11-28 04:09:29,184 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:09:29,649 INFO L134 CoverageAnalysis]: Checked inductivity of 7094 backedges. 3677 proven. 1367 refuted. 0 times theorem prover too weak. 2050 trivial. 0 not checked. [2024-11-28 04:09:29,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256599067] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:09:29,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:09:29,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18, 18] total 34 [2024-11-28 04:09:29,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899897678] [2024-11-28 04:09:29,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:09:29,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-28 04:09:29,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:09:29,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-28 04:09:29,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=805, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 04:09:29,655 INFO L87 Difference]: Start difference. First operand 386 states and 441 transitions. Second operand has 34 states, 34 states have (on average 3.323529411764706) internal successors, (113), 34 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:31,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:09:31,952 INFO L93 Difference]: Finished difference Result 1329 states and 1477 transitions. [2024-11-28 04:09:31,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-11-28 04:09:31,953 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.323529411764706) internal successors, (113), 34 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 212 [2024-11-28 04:09:31,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:09:31,958 INFO L225 Difference]: With dead ends: 1329 [2024-11-28 04:09:31,958 INFO L226 Difference]: Without dead ends: 1044 [2024-11-28 04:09:31,962 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 393 SyntacticMatches, 10 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3080 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2146, Invalid=6044, Unknown=0, NotChecked=0, Total=8190 [2024-11-28 04:09:31,963 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 646 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:09:31,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 400 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 04:09:31,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2024-11-28 04:09:32,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 938. [2024-11-28 04:09:32,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 937 states have (on average 1.143009605122732) internal successors, (1071), 937 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:32,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1071 transitions. [2024-11-28 04:09:32,078 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1071 transitions. Word has length 212 [2024-11-28 04:09:32,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:09:32,079 INFO L471 AbstractCegarLoop]: Abstraction has 938 states and 1071 transitions. [2024-11-28 04:09:32,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.323529411764706) internal successors, (113), 34 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:32,079 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1071 transitions. [2024-11-28 04:09:32,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2024-11-28 04:09:32,088 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:09:32,088 INFO L218 NwaCegarLoop]: trace histogram [200, 200, 20, 20, 20, 20, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:09:32,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:09:32,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 04:09:32,289 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:09:32,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:09:32,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1536180651, now seen corresponding path program 5 times [2024-11-28 04:09:32,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:09:32,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176747086] [2024-11-28 04:09:32,290 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:09:32,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:09:35,720 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 63 check-sat command(s) [2024-11-28 04:09:35,721 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:09:37,544 INFO L134 CoverageAnalysis]: Checked inductivity of 44606 backedges. 11418 proven. 542 refuted. 0 times theorem prover too weak. 32646 trivial. 0 not checked. [2024-11-28 04:09:37,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:09:37,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176747086] [2024-11-28 04:09:37,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176747086] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:09:37,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107139132] [2024-11-28 04:09:37,548 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:09:37,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:09:37,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:09:37,550 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:09:37,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c61376-cb5b-4fa8-897d-8c90c691409a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process