./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_init9_ground-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_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/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_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/standard_init9_ground-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/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_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/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 477192436c119b4e74e1ff9bea9de738ba755c58e7908ace744a87a82dccf838 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:42:47,812 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:42:47,926 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:42:47,937 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:42:47,937 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:42:47,988 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:42:47,989 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:42:47,989 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:42:47,990 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:42:47,990 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:42:47,990 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:42:47,990 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:42:47,990 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:42:47,991 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:42:47,991 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:42:47,991 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:42:47,991 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:42:47,991 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:42:47,995 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:42:47,995 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:42:47,995 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:42:47,995 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:42:47,995 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:42:47,995 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:42:47,996 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:42:47,996 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:42:47,996 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:42:47,996 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:42:47,996 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:42:47,996 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:42:47,997 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:42:47,998 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:42:47,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:42:47,998 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:42:47,998 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:42:47,998 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:42:47,999 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:42:47,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:42:47,999 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:42:47,999 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:42:47,999 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:42:47,999 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:42:47,999 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:42:48,000 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:42:48,000 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:42:48,000 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:42:48,000 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:42:48,000 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:42:48,000 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_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/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 -> 477192436c119b4e74e1ff9bea9de738ba755c58e7908ace744a87a82dccf838 [2024-11-28 02:42:48,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:42:48,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:42:48,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:42:48,380 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:42:48,381 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:42:48,382 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/array-examples/standard_init9_ground-2.i [2024-11-28 02:42:52,176 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/data/0f4b247e2/da6952ad664d49ca9206b244524f6aa4/FLAG7d247f838 [2024-11-28 02:42:52,537 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:42:52,537 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/sv-benchmarks/c/array-examples/standard_init9_ground-2.i [2024-11-28 02:42:52,555 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/data/0f4b247e2/da6952ad664d49ca9206b244524f6aa4/FLAG7d247f838 [2024-11-28 02:42:52,584 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/data/0f4b247e2/da6952ad664d49ca9206b244524f6aa4 [2024-11-28 02:42:52,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:42:52,590 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:42:52,592 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:42:52,592 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:42:52,599 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:42:52,601 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:42:52" (1/1) ... [2024-11-28 02:42:52,605 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e0f3b7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:52, skipping insertion in model container [2024-11-28 02:42:52,606 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:42:52" (1/1) ... [2024-11-28 02:42:52,629 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:42:52,855 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_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/sv-benchmarks/c/array-examples/standard_init9_ground-2.i[816,829] [2024-11-28 02:42:52,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:42:52,909 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:42:52,925 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_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/sv-benchmarks/c/array-examples/standard_init9_ground-2.i[816,829] [2024-11-28 02:42:52,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:42:52,978 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:42:52,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:52 WrapperNode [2024-11-28 02:42:52,979 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:42:52,981 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:42:52,981 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:42:52,981 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:42:52,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:52" (1/1) ... [2024-11-28 02:42:53,003 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:52" (1/1) ... [2024-11-28 02:42:53,027 INFO L138 Inliner]: procedures = 15, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 85 [2024-11-28 02:42:53,031 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:42:53,031 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:42:53,032 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:42:53,033 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:42:53,045 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:52" (1/1) ... [2024-11-28 02:42:53,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:52" (1/1) ... [2024-11-28 02:42:53,047 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:52" (1/1) ... [2024-11-28 02:42:53,071 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 9 writes are split as follows [0, 9]. [2024-11-28 02:42:53,075 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:52" (1/1) ... [2024-11-28 02:42:53,076 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:52" (1/1) ... [2024-11-28 02:42:53,082 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:52" (1/1) ... [2024-11-28 02:42:53,087 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:52" (1/1) ... [2024-11-28 02:42:53,101 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:52" (1/1) ... [2024-11-28 02:42:53,103 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:52" (1/1) ... [2024-11-28 02:42:53,106 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:52" (1/1) ... [2024-11-28 02:42:53,108 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:42:53,112 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:42:53,112 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:42:53,112 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:42:53,114 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:52" (1/1) ... [2024-11-28 02:42:53,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:42:53,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:42:53,159 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:42:53,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:42:53,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:42:53,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:42:53,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:42:53,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:42:53,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:42:53,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:42:53,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:42:53,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:42:53,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:42:53,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:42:53,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:42:53,308 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:42:53,310 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:42:53,607 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-28 02:42:53,607 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:42:53,622 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:42:53,623 INFO L312 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-28 02:42:53,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:42:53 BoogieIcfgContainer [2024-11-28 02:42:53,623 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:42:53,626 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:42:53,627 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:42:53,634 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:42:53,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:42:52" (1/3) ... [2024-11-28 02:42:53,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee929d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:42:53, skipping insertion in model container [2024-11-28 02:42:53,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:52" (2/3) ... [2024-11-28 02:42:53,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee929d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:42:53, skipping insertion in model container [2024-11-28 02:42:53,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:42:53" (3/3) ... [2024-11-28 02:42:53,637 INFO L128 eAbstractionObserver]: Analyzing ICFG standard_init9_ground-2.i [2024-11-28 02:42:53,658 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:42:53,661 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG standard_init9_ground-2.i that has 1 procedures, 39 locations, 1 initial locations, 10 loop locations, and 1 error locations. [2024-11-28 02:42:53,754 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:42:53,776 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;@44f7b76c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:42:53,776 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:42:53,781 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 38 states have internal predecessors, (59), 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 02:42:53,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 02:42:53,791 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:42:53,792 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:42:53,792 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:42:53,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:53,799 INFO L85 PathProgramCache]: Analyzing trace with hash 812434007, now seen corresponding path program 1 times [2024-11-28 02:42:53,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:53,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145225780] [2024-11-28 02:42:53,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:53,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:54,066 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 02:42:54,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:42:54,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145225780] [2024-11-28 02:42:54,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145225780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:54,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:42:54,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:42:54,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487824359] [2024-11-28 02:42:54,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:54,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:42:54,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:42:54,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:42:54,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:42:54,105 INFO L87 Difference]: Start difference. First operand has 39 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 38 states have internal predecessors, (59), 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 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 02:42:54,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:42:54,341 INFO L93 Difference]: Finished difference Result 92 states and 148 transitions. [2024-11-28 02:42:54,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:42:54,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2024-11-28 02:42:54,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:42:54,357 INFO L225 Difference]: With dead ends: 92 [2024-11-28 02:42:54,357 INFO L226 Difference]: Without dead ends: 53 [2024-11-28 02:42:54,362 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 02:42:54,368 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 9 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:42:54,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 41 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:42:54,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-28 02:42:54,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2024-11-28 02:42:54,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 43 states have internal predecessors, (53), 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 02:42:54,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2024-11-28 02:42:54,434 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 24 [2024-11-28 02:42:54,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:42:54,435 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2024-11-28 02:42:54,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 02:42:54,435 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2024-11-28 02:42:54,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 02:42:54,437 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:42:54,437 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:42:54,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:42:54,438 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:42:54,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:54,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1429278403, now seen corresponding path program 1 times [2024-11-28 02:42:54,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:54,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059459371] [2024-11-28 02:42:54,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:54,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:54,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:54,781 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:42:54,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:42:54,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059459371] [2024-11-28 02:42:54,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059459371] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:42:54,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087292195] [2024-11-28 02:42:54,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:54,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:42:54,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:42:54,787 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:42:54,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:42:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:54,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:42:54,979 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:42:55,062 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:42:55,063 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:42:55,131 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:42:55,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087292195] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:42:55,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:42:55,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 02:42:55,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222547391] [2024-11-28 02:42:55,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:42:55,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:42:55,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:42:55,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:42:55,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:42:55,137 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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 02:42:55,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:42:55,566 INFO L93 Difference]: Finished difference Result 137 states and 181 transitions. [2024-11-28 02:42:55,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:42:55,571 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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 42 [2024-11-28 02:42:55,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:42:55,572 INFO L225 Difference]: With dead ends: 137 [2024-11-28 02:42:55,572 INFO L226 Difference]: Without dead ends: 98 [2024-11-28 02:42:55,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:42:55,574 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 50 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:42:55,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 50 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:42:55,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-28 02:42:55,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-11-28 02:42:55,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.1030927835051547) internal successors, (107), 97 states have internal predecessors, (107), 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 02:42:55,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 107 transitions. [2024-11-28 02:42:55,599 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 107 transitions. Word has length 42 [2024-11-28 02:42:55,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:42:55,599 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 107 transitions. [2024-11-28 02:42:55,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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 02:42:55,599 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 107 transitions. [2024-11-28 02:42:55,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-28 02:42:55,604 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:42:55,604 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:42:55,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:42:55,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:42:55,805 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:42:55,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:55,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1827042799, now seen corresponding path program 2 times [2024-11-28 02:42:55,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:55,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440846310] [2024-11-28 02:42:55,807 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:42:55,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:55,981 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:42:55,981 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:42:56,552 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-28 02:42:56,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:42:56,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440846310] [2024-11-28 02:42:56,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440846310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:42:56,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068782584] [2024-11-28 02:42:56,553 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:42:56,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:42:56,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:42:56,557 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:42:56,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:42:56,768 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:42:56,768 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:42:56,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:42:56,777 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:42:56,850 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-28 02:42:56,853 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:42:57,003 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-28 02:42:57,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068782584] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:42:57,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:42:57,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-28 02:42:57,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534312828] [2024-11-28 02:42:57,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:42:57,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 02:42:57,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:42:57,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 02:42:57,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:42:57,009 INFO L87 Difference]: Start difference. First operand 98 states and 107 transitions. Second operand has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 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 02:42:57,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:42:57,837 INFO L93 Difference]: Finished difference Result 293 states and 364 transitions. [2024-11-28 02:42:57,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:42:57,838 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 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 96 [2024-11-28 02:42:57,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:42:57,840 INFO L225 Difference]: With dead ends: 293 [2024-11-28 02:42:57,840 INFO L226 Difference]: Without dead ends: 206 [2024-11-28 02:42:57,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 186 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 02:42:57,842 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 162 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:42:57,843 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 50 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:42:57,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-28 02:42:57,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2024-11-28 02:42:57,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.048780487804878) internal successors, (215), 205 states have internal predecessors, (215), 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 02:42:57,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 215 transitions. [2024-11-28 02:42:57,892 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 215 transitions. Word has length 96 [2024-11-28 02:42:57,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:42:57,892 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 215 transitions. [2024-11-28 02:42:57,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 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 02:42:57,893 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 215 transitions. [2024-11-28 02:42:57,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-28 02:42:57,896 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:42:57,897 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:42:57,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:42:58,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-28 02:42:58,098 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:42:58,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:58,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1695332679, now seen corresponding path program 3 times [2024-11-28 02:42:58,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:58,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470700080] [2024-11-28 02:42:58,099 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:42:58,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:58,553 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 02:42:58,554 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:42:59,556 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2024-11-28 02:42:59,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:42:59,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470700080] [2024-11-28 02:42:59,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470700080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:42:59,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969138032] [2024-11-28 02:42:59,558 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:42:59,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:42:59,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:42:59,562 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:42:59,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:44:25,732 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 02:44:25,732 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:44:25,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 02:44:25,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:44:25,903 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2024-11-28 02:44:25,903 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:44:26,305 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 781 trivial. 0 not checked. [2024-11-28 02:44:26,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969138032] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:44:26,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:44:26,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-28 02:44:26,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833422858] [2024-11-28 02:44:26,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:44:26,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 02:44:26,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:44:26,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 02:44:26,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-28 02:44:26,309 INFO L87 Difference]: Start difference. First operand 206 states and 215 transitions. Second operand has 25 states, 25 states have (on average 3.52) internal successors, (88), 25 states have internal predecessors, (88), 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 02:44:27,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:44:27,623 INFO L93 Difference]: Finished difference Result 605 states and 730 transitions. [2024-11-28 02:44:27,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 02:44:27,623 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.52) internal successors, (88), 25 states have internal predecessors, (88), 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 204 [2024-11-28 02:44:27,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:44:27,627 INFO L225 Difference]: With dead ends: 605 [2024-11-28 02:44:27,627 INFO L226 Difference]: Without dead ends: 422 [2024-11-28 02:44:27,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-28 02:44:27,630 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 450 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 541 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 541 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:44:27,630 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 66 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [541 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 02:44:27,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-11-28 02:44:27,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2024-11-28 02:44:27,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 421 states have (on average 1.0237529691211402) internal successors, (431), 421 states have internal predecessors, (431), 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 02:44:27,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 431 transitions. [2024-11-28 02:44:27,676 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 431 transitions. Word has length 204 [2024-11-28 02:44:27,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:44:27,677 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 431 transitions. [2024-11-28 02:44:27,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.52) internal successors, (88), 25 states have internal predecessors, (88), 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 02:44:27,677 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 431 transitions. [2024-11-28 02:44:27,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2024-11-28 02:44:27,698 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:44:27,698 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:44:27,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 02:44:27,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:44:27,899 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:44:27,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:27,900 INFO L85 PathProgramCache]: Analyzing trace with hash 389813239, now seen corresponding path program 4 times [2024-11-28 02:44:27,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:44:27,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456316303] [2024-11-28 02:44:27,901 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:44:27,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:44:28,197 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:44:28,197 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:44:31,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2024-11-28 02:44:31,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:44:31,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456316303] [2024-11-28 02:44:31,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456316303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:44:31,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646185958] [2024-11-28 02:44:31,087 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:44:31,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:44:31,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:44:31,090 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:44:31,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:44:31,639 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:44:31,639 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:44:31,648 INFO L256 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 02:44:31,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:44:31,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2024-11-28 02:44:31,857 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:44:33,154 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2024-11-28 02:44:33,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646185958] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:44:33,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:44:33,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-28 02:44:33,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087382195] [2024-11-28 02:44:33,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:44:33,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-28 02:44:33,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:44:33,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-28 02:44:33,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 02:44:33,166 INFO L87 Difference]: Start difference. First operand 422 states and 431 transitions. Second operand has 49 states, 49 states have (on average 2.7142857142857144) internal successors, (133), 49 states have internal predecessors, (133), 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 02:44:36,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:44:36,296 INFO L93 Difference]: Finished difference Result 1229 states and 1462 transitions. [2024-11-28 02:44:36,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 02:44:36,297 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.7142857142857144) internal successors, (133), 49 states have internal predecessors, (133), 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 420 [2024-11-28 02:44:36,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:44:36,301 INFO L225 Difference]: With dead ends: 1229 [2024-11-28 02:44:36,301 INFO L226 Difference]: Without dead ends: 854 [2024-11-28 02:44:36,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 863 GetRequests, 816 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 02:44:36,306 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 1346 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 1546 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 2410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1546 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:44:36,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1346 Valid, 50 Invalid, 2410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1546 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 02:44:36,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2024-11-28 02:44:36,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 854. [2024-11-28 02:44:36,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 1.0117233294255568) internal successors, (863), 853 states have internal predecessors, (863), 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 02:44:36,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 863 transitions. [2024-11-28 02:44:36,373 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 863 transitions. Word has length 420 [2024-11-28 02:44:36,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:44:36,374 INFO L471 AbstractCegarLoop]: Abstraction has 854 states and 863 transitions. [2024-11-28 02:44:36,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.7142857142857144) internal successors, (133), 49 states have internal predecessors, (133), 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 02:44:36,375 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 863 transitions. [2024-11-28 02:44:36,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 853 [2024-11-28 02:44:36,414 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:44:36,415 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:44:36,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 02:44:36,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:44:36,620 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:44:36,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:36,621 INFO L85 PathProgramCache]: Analyzing trace with hash -28436137, now seen corresponding path program 5 times [2024-11-28 02:44:36,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:44:36,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348552052] [2024-11-28 02:44:36,622 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:44:36,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:44:41,892 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-11-28 02:44:41,893 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:44:50,346 INFO L134 CoverageAnalysis]: Checked inductivity of 19044 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 16928 trivial. 0 not checked. [2024-11-28 02:44:50,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:44:50,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348552052] [2024-11-28 02:44:50,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348552052] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:44:50,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352802784] [2024-11-28 02:44:50,347 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:44:50,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:44:50,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:44:50,350 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:44:50,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d5295c-ff49-4d27-b87d-bb2b7b0672de/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process