./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-programs/copysome2-2.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_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/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_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-programs/copysome2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/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_4d0cbcd9-506c-4c39-8103-b4a357c4d282/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 498a9d01a4c9c1e07ef15169be61a1aa89cf7662222e03da034e67869e2f7c71 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:30:58,122 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:30:58,199 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:30:58,206 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:30:58,207 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:30:58,239 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:30:58,240 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:30:58,240 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:30:58,241 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:30:58,241 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:30:58,241 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:30:58,241 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:30:58,242 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:30:58,242 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:30:58,242 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:30:58,242 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:30:58,242 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:30:58,243 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:30:58,243 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:30:58,243 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:30:58,243 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:30:58,243 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:30:58,243 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:30:58,244 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:30:58,244 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:30:58,244 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:30:58,244 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:30:58,244 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:30:58,245 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:30:58,245 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:30:58,245 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:30:58,245 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:30:58,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:30:58,246 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:30:58,246 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:30:58,246 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:30:58,246 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:30:58,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:30:58,247 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:30:58,247 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:30:58,247 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:30:58,247 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:30:58,247 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:30:58,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:30:58,247 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:30:58,248 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:30:58,248 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:30:58,248 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:30:58,248 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_4d0cbcd9-506c-4c39-8103-b4a357c4d282/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 -> 498a9d01a4c9c1e07ef15169be61a1aa89cf7662222e03da034e67869e2f7c71 [2024-11-28 02:30:58,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:30:58,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:30:58,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:30:58,592 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:30:58,592 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:30:58,594 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/array-programs/copysome2-2.i [2024-11-28 02:31:02,188 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/data/2853230a3/52e9a03d86c64010b4972f69ace7752c/FLAGcbf526704 [2024-11-28 02:31:02,531 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:31:02,532 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/sv-benchmarks/c/array-programs/copysome2-2.i [2024-11-28 02:31:02,550 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/data/2853230a3/52e9a03d86c64010b4972f69ace7752c/FLAGcbf526704 [2024-11-28 02:31:02,593 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/data/2853230a3/52e9a03d86c64010b4972f69ace7752c [2024-11-28 02:31:02,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:31:02,598 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:31:02,600 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:31:02,600 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:31:02,615 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:31:02,616 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:31:02" (1/1) ... [2024-11-28 02:31:02,618 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4902289f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:02, skipping insertion in model container [2024-11-28 02:31:02,618 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:31:02" (1/1) ... [2024-11-28 02:31:02,637 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:31:02,837 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_4d0cbcd9-506c-4c39-8103-b4a357c4d282/sv-benchmarks/c/array-programs/copysome2-2.i[804,817] [2024-11-28 02:31:02,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:31:02,882 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:31:02,895 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_4d0cbcd9-506c-4c39-8103-b4a357c4d282/sv-benchmarks/c/array-programs/copysome2-2.i[804,817] [2024-11-28 02:31:02,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:31:02,925 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:31:02,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:02 WrapperNode [2024-11-28 02:31:02,926 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:31:02,927 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:31:02,928 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:31:02,928 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:31:02,937 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:02" (1/1) ... [2024-11-28 02:31:02,945 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:02" (1/1) ... [2024-11-28 02:31:02,966 INFO L138 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 87 [2024-11-28 02:31:02,967 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:31:02,968 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:31:02,968 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:31:02,968 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:31:02,979 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:02" (1/1) ... [2024-11-28 02:31:02,979 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:02" (1/1) ... [2024-11-28 02:31:02,981 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:02" (1/1) ... [2024-11-28 02:31:02,998 INFO L175 MemorySlicer]: Split 13 memory accesses to 4 slices as follows [2, 3, 4, 4]. 31 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 6 writes are split as follows [0, 1, 2, 3]. [2024-11-28 02:31:02,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:02" (1/1) ... [2024-11-28 02:31:02,999 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:02" (1/1) ... [2024-11-28 02:31:03,006 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:02" (1/1) ... [2024-11-28 02:31:03,007 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:02" (1/1) ... [2024-11-28 02:31:03,011 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:02" (1/1) ... [2024-11-28 02:31:03,013 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:02" (1/1) ... [2024-11-28 02:31:03,014 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:02" (1/1) ... [2024-11-28 02:31:03,016 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:31:03,017 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:31:03,018 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:31:03,018 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:31:03,019 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:02" (1/1) ... [2024-11-28 02:31:03,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:31:03,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:03,060 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:31:03,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:31:03,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:31:03,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:31:03,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:31:03,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:31:03,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:31:03,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:31:03,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:31:03,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:31:03,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:31:03,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 02:31:03,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:31:03,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:31:03,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:31:03,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:31:03,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:31:03,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 02:31:03,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:31:03,227 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:31:03,231 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:31:03,511 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-28 02:31:03,511 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:31:03,527 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:31:03,528 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 02:31:03,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:31:03 BoogieIcfgContainer [2024-11-28 02:31:03,530 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:31:03,534 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:31:03,534 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:31:03,544 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:31:03,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:31:02" (1/3) ... [2024-11-28 02:31:03,545 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f81c4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:31:03, skipping insertion in model container [2024-11-28 02:31:03,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:02" (2/3) ... [2024-11-28 02:31:03,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f81c4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:31:03, skipping insertion in model container [2024-11-28 02:31:03,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:31:03" (3/3) ... [2024-11-28 02:31:03,551 INFO L128 eAbstractionObserver]: Analyzing ICFG copysome2-2.i [2024-11-28 02:31:03,577 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:31:03,580 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG copysome2-2.i that has 1 procedures, 23 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-28 02:31:03,649 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:31:03,665 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;@1a471203, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:31:03,665 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:31:03,670 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 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 02:31:03,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 02:31:03,676 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:31:03,677 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:03,678 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:31:03,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:03,685 INFO L85 PathProgramCache]: Analyzing trace with hash -2095966413, now seen corresponding path program 1 times [2024-11-28 02:31:03,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:31:03,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345046828] [2024-11-28 02:31:03,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:31:03,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:31:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:31:04,028 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 02:31:04,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:31:04,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345046828] [2024-11-28 02:31:04,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345046828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:31:04,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:31:04,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:31:04,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536087628] [2024-11-28 02:31:04,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:31:04,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:31:04,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:31:04,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:31:04,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:31:04,072 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 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) 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 02:31:04,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:31:04,193 INFO L93 Difference]: Finished difference Result 50 states and 76 transitions. [2024-11-28 02:31:04,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:31:04,197 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 02:31:04,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:31:04,206 INFO L225 Difference]: With dead ends: 50 [2024-11-28 02:31:04,206 INFO L226 Difference]: Without dead ends: 27 [2024-11-28 02:31:04,210 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 02:31:04,214 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:31:04,219 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 29 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:31:04,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-28 02:31:04,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2024-11-28 02:31:04,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 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 02:31:04,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-11-28 02:31:04,262 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 12 [2024-11-28 02:31:04,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:31:04,263 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-11-28 02:31:04,263 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 02:31:04,263 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-11-28 02:31:04,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 02:31:04,264 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:31:04,264 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 02:31:04,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:31:04,268 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:31:04,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:04,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1581770489, now seen corresponding path program 1 times [2024-11-28 02:31:04,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:31:04,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460847689] [2024-11-28 02:31:04,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:31:04,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:31:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:31:04,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:31:04,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:31:04,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460847689] [2024-11-28 02:31:04,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460847689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:31:04,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673514180] [2024-11-28 02:31:04,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:31:04,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:04,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:04,527 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:04,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:31:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:31:04,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:31:04,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:04,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:31:04,794 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:31:04,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:31:04,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673514180] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:31:04,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:31:04,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 02:31:04,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569223638] [2024-11-28 02:31:04,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:31:04,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:31:04,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:31:04,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:31:04,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:31:04,839 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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 02:31:05,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:31:05,044 INFO L93 Difference]: Finished difference Result 63 states and 87 transitions. [2024-11-28 02:31:05,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:31:05,047 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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 02:31:05,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:31:05,048 INFO L225 Difference]: With dead ends: 63 [2024-11-28 02:31:05,048 INFO L226 Difference]: Without dead ends: 46 [2024-11-28 02:31:05,048 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:31:05,049 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 32 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:31:05,050 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 46 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:31:05,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-28 02:31:05,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-28 02:31:05,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 45 states have internal predecessors, (57), 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 02:31:05,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2024-11-28 02:31:05,067 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 20 [2024-11-28 02:31:05,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:31:05,067 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2024-11-28 02:31:05,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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 02:31:05,068 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2024-11-28 02:31:05,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-28 02:31:05,072 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:31:05,072 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:05,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 02:31:05,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:05,279 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:31:05,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:05,279 INFO L85 PathProgramCache]: Analyzing trace with hash -142704553, now seen corresponding path program 2 times [2024-11-28 02:31:05,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:31:05,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296096705] [2024-11-28 02:31:05,280 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:31:05,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:31:05,442 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:31:05,443 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:31:05,757 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-28 02:31:05,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:31:05,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296096705] [2024-11-28 02:31:05,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296096705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:31:05,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490926070] [2024-11-28 02:31:05,760 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:31:05,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:05,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:05,763 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:05,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:31:05,955 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:31:05,956 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:31:05,958 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:31:05,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:06,006 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-28 02:31:06,006 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:31:06,141 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-28 02:31:06,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490926070] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:31:06,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:31:06,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-28 02:31:06,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707514084] [2024-11-28 02:31:06,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:31:06,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 02:31:06,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:31:06,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 02:31:06,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:31:06,147 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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 02:31:06,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:31:06,564 INFO L93 Difference]: Finished difference Result 129 states and 180 transitions. [2024-11-28 02:31:06,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:31:06,565 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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) Word has length 44 [2024-11-28 02:31:06,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:31:06,567 INFO L225 Difference]: With dead ends: 129 [2024-11-28 02:31:06,569 INFO L226 Difference]: Without dead ends: 94 [2024-11-28 02:31:06,569 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:31:06,570 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 152 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:31:06,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 38 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:31:06,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-28 02:31:06,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-28 02:31:06,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.2580645161290323) internal successors, (117), 93 states have internal predecessors, (117), 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 02:31:06,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 117 transitions. [2024-11-28 02:31:06,586 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 117 transitions. Word has length 44 [2024-11-28 02:31:06,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:31:06,587 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 117 transitions. [2024-11-28 02:31:06,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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 02:31:06,587 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 117 transitions. [2024-11-28 02:31:06,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-28 02:31:06,590 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:31:06,590 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:06,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:31:06,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:06,791 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:31:06,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:06,791 INFO L85 PathProgramCache]: Analyzing trace with hash 2019004015, now seen corresponding path program 3 times [2024-11-28 02:31:06,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:31:06,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389532689] [2024-11-28 02:31:06,792 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:31:06,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:31:07,233 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 02:31:07,234 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:31:08,101 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-28 02:31:08,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:31:08,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389532689] [2024-11-28 02:31:08,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389532689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:31:08,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450573149] [2024-11-28 02:31:08,102 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:31:08,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:08,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:08,105 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:08,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:31:14,907 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 02:31:14,908 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:31:14,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:31:14,929 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:15,098 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-28 02:31:15,098 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:31:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-28 02:31:15,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450573149] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:31:15,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:31:15,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-28 02:31:15,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604138059] [2024-11-28 02:31:15,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:31:15,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 02:31:15,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:31:15,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 02:31:15,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-28 02:31:15,559 INFO L87 Difference]: Start difference. First operand 94 states and 117 transitions. Second operand has 25 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 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 02:31:16,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:31:16,279 INFO L93 Difference]: Finished difference Result 261 states and 366 transitions. [2024-11-28 02:31:16,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 02:31:16,280 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 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 92 [2024-11-28 02:31:16,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:31:16,282 INFO L225 Difference]: With dead ends: 261 [2024-11-28 02:31:16,282 INFO L226 Difference]: Without dead ends: 190 [2024-11-28 02:31:16,284 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-28 02:31:16,285 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 280 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:31:16,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 30 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:31:16,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-28 02:31:16,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2024-11-28 02:31:16,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 1.253968253968254) internal successors, (237), 189 states have internal predecessors, (237), 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 02:31:16,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 237 transitions. [2024-11-28 02:31:16,310 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 237 transitions. Word has length 92 [2024-11-28 02:31:16,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:31:16,311 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 237 transitions. [2024-11-28 02:31:16,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 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 02:31:16,311 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 237 transitions. [2024-11-28 02:31:16,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-28 02:31:16,318 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:31:16,318 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:16,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 02:31:16,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:16,519 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:31:16,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:16,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1564993889, now seen corresponding path program 4 times [2024-11-28 02:31:16,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:31:16,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414274248] [2024-11-28 02:31:16,520 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:31:16,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:31:16,735 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:31:16,735 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:31:24,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1914 backedges. 570 proven. 209 refuted. 0 times theorem prover too weak. 1135 trivial. 0 not checked. [2024-11-28 02:31:24,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:31:24,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414274248] [2024-11-28 02:31:24,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414274248] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:31:24,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579412171] [2024-11-28 02:31:24,676 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:31:24,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:24,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:24,681 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:24,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:31:25,165 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:31:25,165 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:31:25,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-11-28 02:31:25,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:25,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-28 02:31:25,334 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 02:31:25,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-28 02:31:25,388 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 02:31:25,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-28 02:31:25,443 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 02:31:25,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-28 02:31:25,494 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 02:31:25,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-28 02:31:25,541 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 02:31:25,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-28 02:31:25,586 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 02:31:25,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-28 02:31:25,632 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 02:31:25,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-28 02:31:25,667 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 02:31:25,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-28 02:31:25,702 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 02:31:25,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-28 02:31:25,742 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 02:31:25,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-28 02:31:25,783 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 02:31:25,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-28 02:31:25,837 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 02:31:25,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-28 02:31:25,895 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 02:31:25,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-28 02:31:25,940 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 02:31:25,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-28 02:31:25,989 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 02:31:25,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-28 02:31:26,030 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 02:31:26,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-28 02:31:26,079 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 02:31:26,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-28 02:31:26,132 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 02:31:26,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-28 02:31:26,180 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 02:31:26,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-28 02:31:26,227 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 02:31:26,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-28 02:31:26,331 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 02:31:26,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-28 02:31:26,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1914 backedges. 610 proven. 105 refuted. 0 times theorem prover too weak. 1199 trivial. 0 not checked. [2024-11-28 02:31:26,437 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:31:27,587 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-28 02:31:27,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2024-11-28 02:31:27,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1914 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 1789 trivial. 0 not checked. [2024-11-28 02:31:27,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579412171] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:31:27,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:31:27,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 9] total 32 [2024-11-28 02:31:27,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904967393] [2024-11-28 02:31:27,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:31:27,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 02:31:27,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:31:27,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 02:31:27,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=650, Unknown=0, NotChecked=0, Total=992 [2024-11-28 02:31:27,612 INFO L87 Difference]: Start difference. First operand 190 states and 237 transitions. Second operand has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 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 02:31:28,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:31:28,631 INFO L93 Difference]: Finished difference Result 268 states and 337 transitions. [2024-11-28 02:31:28,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 02:31:28,631 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 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 188 [2024-11-28 02:31:28,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:31:28,634 INFO L225 Difference]: With dead ends: 268 [2024-11-28 02:31:28,635 INFO L226 Difference]: Without dead ends: 266 [2024-11-28 02:31:28,640 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 373 SyntacticMatches, 21 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 822 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=349, Invalid=707, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 02:31:28,641 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:31:28,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 76 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 02:31:28,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-28 02:31:28,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 259. [2024-11-28 02:31:28,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 1.2713178294573644) internal successors, (328), 258 states have internal predecessors, (328), 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 02:31:28,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 328 transitions. [2024-11-28 02:31:28,688 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 328 transitions. Word has length 188 [2024-11-28 02:31:28,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:31:28,689 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 328 transitions. [2024-11-28 02:31:28,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 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 02:31:28,690 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 328 transitions. [2024-11-28 02:31:28,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-28 02:31:28,694 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:31:28,694 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:28,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 02:31:28,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:28,898 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:31:28,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:28,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1762622753, now seen corresponding path program 1 times [2024-11-28 02:31:28,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:31:28,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273157733] [2024-11-28 02:31:28,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:31:28,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:31:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:31:29,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1914 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 1871 trivial. 0 not checked. [2024-11-28 02:31:29,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:31:29,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273157733] [2024-11-28 02:31:29,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273157733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:31:29,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:31:29,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:31:29,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828096747] [2024-11-28 02:31:29,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:31:29,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:31:29,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:31:29,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:31:29,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:31:29,356 INFO L87 Difference]: Start difference. First operand 259 states and 328 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 02:31:29,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:31:29,422 INFO L93 Difference]: Finished difference Result 402 states and 516 transitions. [2024-11-28 02:31:29,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:31:29,424 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 188 [2024-11-28 02:31:29,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:31:29,429 INFO L225 Difference]: With dead ends: 402 [2024-11-28 02:31:29,429 INFO L226 Difference]: Without dead ends: 193 [2024-11-28 02:31:29,430 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 02:31:29,431 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 18 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:31:29,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 23 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:31:29,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-28 02:31:29,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2024-11-28 02:31:29,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.2395833333333333) internal successors, (238), 192 states have internal predecessors, (238), 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 02:31:29,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 238 transitions. [2024-11-28 02:31:29,454 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 238 transitions. Word has length 188 [2024-11-28 02:31:29,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:31:29,454 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 238 transitions. [2024-11-28 02:31:29,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 02:31:29,455 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 238 transitions. [2024-11-28 02:31:29,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-28 02:31:29,457 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:31:29,458 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:29,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:31:29,458 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:31:29,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:29,459 INFO L85 PathProgramCache]: Analyzing trace with hash -831942875, now seen corresponding path program 1 times [2024-11-28 02:31:29,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:31:29,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438567803] [2024-11-28 02:31:29,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:31:29,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:31:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:31:31,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1917 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 1433 trivial. 0 not checked. [2024-11-28 02:31:31,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:31:31,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438567803] [2024-11-28 02:31:31,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438567803] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:31:31,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659420957] [2024-11-28 02:31:31,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:31:31,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:31,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:31,055 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:31,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:31:31,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:31:31,546 INFO L256 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 02:31:31,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:31,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1917 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 1433 trivial. 0 not checked. [2024-11-28 02:31:31,677 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:31:32,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1917 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 1433 trivial. 0 not checked. [2024-11-28 02:31:32,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659420957] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:31:32,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:31:32,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-28 02:31:32,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892555762] [2024-11-28 02:31:32,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:31:32,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-28 02:31:32,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:31:32,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-28 02:31:32,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 02:31:32,973 INFO L87 Difference]: Start difference. First operand 193 states and 238 transitions. Second operand has 49 states, 49 states have (on average 2.306122448979592) internal successors, (113), 49 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 02:31:34,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:31:34,728 INFO L93 Difference]: Finished difference Result 531 states and 740 transitions. [2024-11-28 02:31:34,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 02:31:34,729 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.306122448979592) internal successors, (113), 49 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 192 [2024-11-28 02:31:34,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:31:34,731 INFO L225 Difference]: With dead ends: 531 [2024-11-28 02:31:34,732 INFO L226 Difference]: Without dead ends: 385 [2024-11-28 02:31:34,737 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 02:31:34,738 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 998 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:31:34,742 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 54 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 02:31:34,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-28 02:31:34,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2024-11-28 02:31:34,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 1.2447916666666667) internal successors, (478), 384 states have internal predecessors, (478), 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 02:31:34,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 478 transitions. [2024-11-28 02:31:34,786 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 478 transitions. Word has length 192 [2024-11-28 02:31:34,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:31:34,787 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 478 transitions. [2024-11-28 02:31:34,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.306122448979592) internal successors, (113), 49 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 02:31:34,788 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 478 transitions. [2024-11-28 02:31:34,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2024-11-28 02:31:34,800 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:31:34,800 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:34,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 02:31:35,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 02:31:35,001 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:31:35,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:35,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1307910021, now seen corresponding path program 2 times [2024-11-28 02:31:35,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:31:35,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203468266] [2024-11-28 02:31:35,003 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:31:35,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:31:35,269 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:31:35,270 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:31:40,275 INFO L134 CoverageAnalysis]: Checked inductivity of 8421 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 6305 trivial. 0 not checked. [2024-11-28 02:31:40,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:31:40,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203468266] [2024-11-28 02:31:40,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203468266] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:31:40,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719906915] [2024-11-28 02:31:40,276 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:31:40,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:40,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:40,279 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:40,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:31:41,111 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:31:41,112 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:31:41,120 INFO L256 TraceCheckSpWp]: Trace formula consists of 1972 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-28 02:31:41,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:41,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8421 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 6305 trivial. 0 not checked. [2024-11-28 02:31:41,370 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:31:45,399 INFO L134 CoverageAnalysis]: Checked inductivity of 8421 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 6305 trivial. 0 not checked. [2024-11-28 02:31:45,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719906915] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:31:45,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:31:45,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2024-11-28 02:31:45,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906697991] [2024-11-28 02:31:45,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:31:45,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-28 02:31:45,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:31:45,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-28 02:31:45,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-28 02:31:45,411 INFO L87 Difference]: Start difference. First operand 385 states and 478 transitions. Second operand has 97 states, 97 states have (on average 2.154639175257732) internal successors, (209), 97 states have internal predecessors, (209), 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 02:31:52,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:31:52,214 INFO L93 Difference]: Finished difference Result 1059 states and 1484 transitions. [2024-11-28 02:31:52,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-28 02:31:52,214 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.154639175257732) internal successors, (209), 97 states have internal predecessors, (209), 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 384 [2024-11-28 02:31:52,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:31:52,218 INFO L225 Difference]: With dead ends: 1059 [2024-11-28 02:31:52,219 INFO L226 Difference]: Without dead ends: 769 [2024-11-28 02:31:52,222 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 815 GetRequests, 720 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-28 02:31:52,223 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 2360 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 890 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2360 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 1861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 890 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:31:52,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2360 Valid, 62 Invalid, 1861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [890 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-28 02:31:52,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2024-11-28 02:31:52,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 769. [2024-11-28 02:31:52,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 768 states have (on average 1.2473958333333333) internal successors, (958), 768 states have internal predecessors, (958), 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 02:31:52,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 958 transitions. [2024-11-28 02:31:52,268 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 958 transitions. Word has length 384 [2024-11-28 02:31:52,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:31:52,268 INFO L471 AbstractCegarLoop]: Abstraction has 769 states and 958 transitions. [2024-11-28 02:31:52,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.154639175257732) internal successors, (209), 97 states have internal predecessors, (209), 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 02:31:52,269 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 958 transitions. [2024-11-28 02:31:52,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2024-11-28 02:31:52,294 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:31:52,295 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 94, 94, 94, 94, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:52,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 02:31:52,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 02:31:52,496 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:31:52,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:52,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1215496261, now seen corresponding path program 3 times [2024-11-28 02:31:52,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:31:52,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291904980] [2024-11-28 02:31:52,497 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:31:52,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:32:12,845 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 95 check-sat command(s) [2024-11-28 02:32:12,845 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:32:27,808 INFO L134 CoverageAnalysis]: Checked inductivity of 35253 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 26417 trivial. 0 not checked. [2024-11-28 02:32:27,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:32:27,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291904980] [2024-11-28 02:32:27,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291904980] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:32:27,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853009525] [2024-11-28 02:32:27,809 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:32:27,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:32:27,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:32:27,816 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:32:27,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d0cbcd9-506c-4c39-8103-b4a357c4d282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process