./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/aim-100-1-6-unsat-4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/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_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/aim-100-1-6-unsat-4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/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_c4517a3a-5944-4574-b1a2-70f334871d8b/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 f7c795918b0d99793244a4191056369ebf467324a96b37155dad1e5d161bc1bc --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:07:03,704 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:07:03,799 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:07:03,804 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:07:03,805 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:07:03,840 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:07:03,840 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:07:03,841 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:07:03,841 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:07:03,841 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:07:03,841 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:07:03,841 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:07:03,842 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:07:03,842 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:07:03,843 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:07:03,843 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:07:03,843 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:07:03,843 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:07:03,843 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:07:03,844 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:07:03,844 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:07:03,844 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:07:03,844 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:07:03,844 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:07:03,844 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:07:03,844 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:07:03,844 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:07:03,844 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:07:03,844 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:07:03,844 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:07:03,845 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:07:03,845 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:07:03,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:03,845 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:07:03,845 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:07:03,845 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:07:03,845 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:07:03,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:03,845 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:07:03,845 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:07:03,846 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:07:03,846 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:07:03,846 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:07:03,846 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:07:03,846 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:07:03,846 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:07:03,846 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:07:03,846 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:07:03,846 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_c4517a3a-5944-4574-b1a2-70f334871d8b/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 -> f7c795918b0d99793244a4191056369ebf467324a96b37155dad1e5d161bc1bc [2024-11-28 02:07:04,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:07:04,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:07:04,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:07:04,171 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:07:04,171 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:07:04,173 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/xcsp/aim-100-1-6-unsat-4.c [2024-11-28 02:07:07,245 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/data/8630a0422/2d1a352a58264d83987de0457c387b05/FLAGeb1d08aa9 [2024-11-28 02:07:07,585 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:07:07,585 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/sv-benchmarks/c/xcsp/aim-100-1-6-unsat-4.c [2024-11-28 02:07:07,605 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/data/8630a0422/2d1a352a58264d83987de0457c387b05/FLAGeb1d08aa9 [2024-11-28 02:07:07,619 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/data/8630a0422/2d1a352a58264d83987de0457c387b05 [2024-11-28 02:07:07,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:07:07,623 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:07:07,625 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:07:07,625 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:07:07,633 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:07:07,634 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:07:07" (1/1) ... [2024-11-28 02:07:07,635 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28b9a9b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:07, skipping insertion in model container [2024-11-28 02:07:07,635 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:07:07" (1/1) ... [2024-11-28 02:07:07,664 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:07:07,983 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_c4517a3a-5944-4574-b1a2-70f334871d8b/sv-benchmarks/c/xcsp/aim-100-1-6-unsat-4.c[19042,19055] [2024-11-28 02:07:08,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:07:08,024 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:07:08,164 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_c4517a3a-5944-4574-b1a2-70f334871d8b/sv-benchmarks/c/xcsp/aim-100-1-6-unsat-4.c[19042,19055] [2024-11-28 02:07:08,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:07:08,191 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:07:08,192 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:08 WrapperNode [2024-11-28 02:07:08,193 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:07:08,194 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:07:08,194 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:07:08,194 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:07:08,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:08" (1/1) ... [2024-11-28 02:07:08,243 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:08" (1/1) ... [2024-11-28 02:07:08,513 INFO L138 Inliner]: procedures = 13, calls = 364, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3441 [2024-11-28 02:07:08,513 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:07:08,514 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:07:08,515 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:07:08,515 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:07:08,524 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:08" (1/1) ... [2024-11-28 02:07:08,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:08" (1/1) ... [2024-11-28 02:07:08,575 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:08" (1/1) ... [2024-11-28 02:07:08,666 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 02:07:08,666 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:08" (1/1) ... [2024-11-28 02:07:08,666 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:08" (1/1) ... [2024-11-28 02:07:08,791 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:08" (1/1) ... [2024-11-28 02:07:08,807 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:08" (1/1) ... [2024-11-28 02:07:08,838 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:08" (1/1) ... [2024-11-28 02:07:08,854 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:08" (1/1) ... [2024-11-28 02:07:08,871 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:08" (1/1) ... [2024-11-28 02:07:08,954 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:07:08,956 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:07:08,956 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:07:08,956 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:07:08,957 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:08" (1/1) ... [2024-11-28 02:07:08,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:08,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:08,998 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:07:09,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:07:09,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:07:09,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:07:09,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:07:09,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:07:09,031 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2024-11-28 02:07:09,031 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2024-11-28 02:07:09,230 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:07:09,232 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:07:14,475 INFO L? ?]: Removed 797 outVars from TransFormulas that were not future-live. [2024-11-28 02:07:14,475 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:07:14,517 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:07:14,517 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 02:07:14,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:07:14 BoogieIcfgContainer [2024-11-28 02:07:14,518 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:07:14,520 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:07:14,520 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:07:14,525 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:07:14,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:07:07" (1/3) ... [2024-11-28 02:07:14,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7004e728 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:07:14, skipping insertion in model container [2024-11-28 02:07:14,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:08" (2/3) ... [2024-11-28 02:07:14,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7004e728 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:07:14, skipping insertion in model container [2024-11-28 02:07:14,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:07:14" (3/3) ... [2024-11-28 02:07:14,532 INFO L128 eAbstractionObserver]: Analyzing ICFG aim-100-1-6-unsat-4.c [2024-11-28 02:07:14,548 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:07:14,551 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aim-100-1-6-unsat-4.c that has 2 procedures, 1588 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-28 02:07:14,683 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:07:14,700 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;@13dab02, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:07:14,701 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:07:14,712 INFO L276 IsEmpty]: Start isEmpty. Operand has 1588 states, 1228 states have (on average 1.52442996742671) internal successors, (1872), 1229 states have internal predecessors, (1872), 357 states have call successors, (357), 1 states have call predecessors, (357), 1 states have return successors, (357), 357 states have call predecessors, (357), 357 states have call successors, (357) [2024-11-28 02:07:14,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2367 [2024-11-28 02:07:14,940 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:14,942 INFO L218 NwaCegarLoop]: trace histogram [357, 357, 357, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:14,942 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:14,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:14,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1044049456, now seen corresponding path program 1 times [2024-11-28 02:07:14,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:14,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994079350] [2024-11-28 02:07:14,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:14,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:17,504 INFO L134 CoverageAnalysis]: Checked inductivity of 254184 backedges. 0 proven. 712 refuted. 0 times theorem prover too weak. 253472 trivial. 0 not checked. [2024-11-28 02:07:17,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:17,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994079350] [2024-11-28 02:07:17,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994079350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:17,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762463866] [2024-11-28 02:07:17,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:17,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:17,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:17,514 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:17,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:07:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:18,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 4559 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 02:07:18,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:18,917 INFO L134 CoverageAnalysis]: Checked inductivity of 254184 backedges. 712 proven. 0 refuted. 0 times theorem prover too weak. 253472 trivial. 0 not checked. [2024-11-28 02:07:18,918 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:07:18,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762463866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:18,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:07:18,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 02:07:18,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730892627] [2024-11-28 02:07:18,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:18,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:07:18,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:18,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:07:18,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:07:18,976 INFO L87 Difference]: Start difference. First operand has 1588 states, 1228 states have (on average 1.52442996742671) internal successors, (1872), 1229 states have internal predecessors, (1872), 357 states have call successors, (357), 1 states have call predecessors, (357), 1 states have return successors, (357), 357 states have call predecessors, (357), 357 states have call successors, (357) Second operand has 2 states, 2 states have (on average 293.0) internal successors, (586), 2 states have internal predecessors, (586), 2 states have call successors, (357), 2 states have call predecessors, (357), 1 states have return successors, (357), 1 states have call predecessors, (357), 2 states have call successors, (357) [2024-11-28 02:07:19,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:19,254 INFO L93 Difference]: Finished difference Result 3170 states and 5523 transitions. [2024-11-28 02:07:19,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:07:19,259 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 293.0) internal successors, (586), 2 states have internal predecessors, (586), 2 states have call successors, (357), 2 states have call predecessors, (357), 1 states have return successors, (357), 1 states have call predecessors, (357), 2 states have call successors, (357) Word has length 2366 [2024-11-28 02:07:19,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:19,290 INFO L225 Difference]: With dead ends: 3170 [2024-11-28 02:07:19,291 INFO L226 Difference]: Without dead ends: 1585 [2024-11-28 02:07:19,309 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2367 GetRequests, 2367 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:07:19,312 INFO L435 NwaCegarLoop]: 2582 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2582 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:19,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2582 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:07:19,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2024-11-28 02:07:19,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1585. [2024-11-28 02:07:19,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1226 states have (on average 1.5236541598694944) internal successors, (1868), 1226 states have internal predecessors, (1868), 357 states have call successors, (357), 1 states have call predecessors, (357), 1 states have return successors, (357), 357 states have call predecessors, (357), 357 states have call successors, (357) [2024-11-28 02:07:19,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2582 transitions. [2024-11-28 02:07:19,698 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2582 transitions. Word has length 2366 [2024-11-28 02:07:19,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:19,702 INFO L471 AbstractCegarLoop]: Abstraction has 1585 states and 2582 transitions. [2024-11-28 02:07:19,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 293.0) internal successors, (586), 2 states have internal predecessors, (586), 2 states have call successors, (357), 2 states have call predecessors, (357), 1 states have return successors, (357), 1 states have call predecessors, (357), 2 states have call successors, (357) [2024-11-28 02:07:19,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2582 transitions. [2024-11-28 02:07:19,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2367 [2024-11-28 02:07:19,826 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:19,827 INFO L218 NwaCegarLoop]: trace histogram [357, 357, 357, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:19,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 02:07:20,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:20,028 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:20,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:20,030 INFO L85 PathProgramCache]: Analyzing trace with hash -293575254, now seen corresponding path program 1 times [2024-11-28 02:07:20,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:20,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172844765] [2024-11-28 02:07:20,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:20,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:47,451 INFO L134 CoverageAnalysis]: Checked inductivity of 254184 backedges. 1458 proven. 5892 refuted. 0 times theorem prover too weak. 246834 trivial. 0 not checked. [2024-11-28 02:07:47,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:47,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172844765] [2024-11-28 02:07:47,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172844765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:47,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50303679] [2024-11-28 02:07:47,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:47,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:47,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:47,457 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:47,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:07:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:48,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 4559 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-11-28 02:07:48,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:08:31,286 INFO L134 CoverageAnalysis]: Checked inductivity of 254184 backedges. 15228 proven. 13236 refuted. 0 times theorem prover too weak. 225720 trivial. 0 not checked. [2024-11-28 02:08:31,286 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:09:07,079 INFO L134 CoverageAnalysis]: Checked inductivity of 254184 backedges. 2700 proven. 13668 refuted. 0 times theorem prover too weak. 237816 trivial. 0 not checked. [2024-11-28 02:09:07,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50303679] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:09:07,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:09:07,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 28, 28] total 59 [2024-11-28 02:09:07,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574034219] [2024-11-28 02:09:07,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:09:07,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-28 02:09:07,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:07,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-28 02:09:07,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=611, Invalid=2811, Unknown=0, NotChecked=0, Total=3422 [2024-11-28 02:09:07,098 INFO L87 Difference]: Start difference. First operand 1585 states and 2582 transitions. Second operand has 59 states, 41 states have (on average 40.8780487804878) internal successors, (1676), 41 states have internal predecessors, (1676), 56 states have call successors, (1035), 2 states have call predecessors, (1035), 3 states have return successors, (1037), 56 states have call predecessors, (1037), 56 states have call successors, (1037) [2024-11-28 02:11:52,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:52,456 INFO L93 Difference]: Finished difference Result 65543 states and 106839 transitions. [2024-11-28 02:11:52,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 470 states. [2024-11-28 02:11:52,460 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 41 states have (on average 40.8780487804878) internal successors, (1676), 41 states have internal predecessors, (1676), 56 states have call successors, (1035), 2 states have call predecessors, (1035), 3 states have return successors, (1037), 56 states have call predecessors, (1037), 56 states have call successors, (1037) Word has length 2366 [2024-11-28 02:11:52,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:52,732 INFO L225 Difference]: With dead ends: 65543 [2024-11-28 02:11:52,732 INFO L226 Difference]: Without dead ends: 64531 [2024-11-28 02:11:52,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5219 GetRequests, 4701 SyntacticMatches, 2 SemanticMatches, 516 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121904 ImplicationChecksByTransitivity, 60.0s TimeCoverageRelationStatistics Valid=46656, Invalid=221150, Unknown=0, NotChecked=0, Total=267806 [2024-11-28 02:11:52,796 INFO L435 NwaCegarLoop]: 11262 mSDtfsCounter, 151001 mSDsluCounter, 169049 mSDsCounter, 0 mSdLazyCounter, 36664 mSolverCounterSat, 12473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151082 SdHoareTripleChecker+Valid, 180311 SdHoareTripleChecker+Invalid, 49137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.8s SdHoareTripleChecker+Time, 12473 IncrementalHoareTripleChecker+Valid, 36664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:52,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151082 Valid, 180311 Invalid, 49137 Unknown, 0 Unchecked, 0.8s Time], IncrementalHoareTripleChecker [12473 Valid, 36664 Invalid, 0 Unknown, 0 Unchecked, 50.0s Time] [2024-11-28 02:11:52,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64531 states. [2024-11-28 02:11:56,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64531 to 13808. [2024-11-28 02:11:56,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13808 states, 11927 states have (on average 1.567787373186887) internal successors, (18699), 11927 states have internal predecessors, (18699), 1879 states have call successors, (1879), 1 states have call predecessors, (1879), 1 states have return successors, (1879), 1879 states have call predecessors, (1879), 1879 states have call successors, (1879) [2024-11-28 02:11:56,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13808 states to 13808 states and 22457 transitions. [2024-11-28 02:11:56,986 INFO L78 Accepts]: Start accepts. Automaton has 13808 states and 22457 transitions. Word has length 2366 [2024-11-28 02:11:56,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:56,992 INFO L471 AbstractCegarLoop]: Abstraction has 13808 states and 22457 transitions. [2024-11-28 02:11:56,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 41 states have (on average 40.8780487804878) internal successors, (1676), 41 states have internal predecessors, (1676), 56 states have call successors, (1035), 2 states have call predecessors, (1035), 3 states have return successors, (1037), 56 states have call predecessors, (1037), 56 states have call successors, (1037) [2024-11-28 02:11:56,994 INFO L276 IsEmpty]: Start isEmpty. Operand 13808 states and 22457 transitions. [2024-11-28 02:11:57,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2369 [2024-11-28 02:11:57,078 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:57,079 INFO L218 NwaCegarLoop]: trace histogram [357, 357, 357, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:11:57,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:11:57,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-28 02:11:57,283 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:57,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:57,286 INFO L85 PathProgramCache]: Analyzing trace with hash -412269696, now seen corresponding path program 1 times [2024-11-28 02:11:57,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:57,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058563363] [2024-11-28 02:11:57,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:57,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:58,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:07,844 INFO L134 CoverageAnalysis]: Checked inductivity of 254184 backedges. 624 proven. 1506 refuted. 0 times theorem prover too weak. 252054 trivial. 0 not checked. [2024-11-28 02:12:07,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:07,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058563363] [2024-11-28 02:12:07,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058563363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:12:07,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264223736] [2024-11-28 02:12:07,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:07,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:12:07,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:12:07,847 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:12:07,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:12:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:08,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 4565 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 02:12:08,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:12:10,528 INFO L134 CoverageAnalysis]: Checked inductivity of 254184 backedges. 99512 proven. 942 refuted. 0 times theorem prover too weak. 153730 trivial. 0 not checked. [2024-11-28 02:12:10,528 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:12:12,687 INFO L134 CoverageAnalysis]: Checked inductivity of 254184 backedges. 624 proven. 1506 refuted. 0 times theorem prover too weak. 252054 trivial. 0 not checked. [2024-11-28 02:12:12,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264223736] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:12:12,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:12:12,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-28 02:12:12,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158583318] [2024-11-28 02:12:12,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:12:12,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:12:12,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:12,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:12:12,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:12:12,697 INFO L87 Difference]: Start difference. First operand 13808 states and 22457 transitions. Second operand has 12 states, 11 states have (on average 71.63636363636364) internal successors, (788), 11 states have internal predecessors, (788), 6 states have call successors, (514), 2 states have call predecessors, (514), 3 states have return successors, (514), 6 states have call predecessors, (514), 6 states have call successors, (514) [2024-11-28 02:12:16,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:16,952 INFO L93 Difference]: Finished difference Result 24424 states and 39721 transitions. [2024-11-28 02:12:16,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:12:16,954 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 71.63636363636364) internal successors, (788), 11 states have internal predecessors, (788), 6 states have call successors, (514), 2 states have call predecessors, (514), 3 states have return successors, (514), 6 states have call predecessors, (514), 6 states have call successors, (514) Word has length 2368 [2024-11-28 02:12:16,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:17,023 INFO L225 Difference]: With dead ends: 24424 [2024-11-28 02:12:17,024 INFO L226 Difference]: Without dead ends: 20252 [2024-11-28 02:12:17,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4750 GetRequests, 4735 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:12:17,042 INFO L435 NwaCegarLoop]: 2662 mSDtfsCounter, 1528 mSDsluCounter, 15600 mSDsCounter, 0 mSdLazyCounter, 4386 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 18262 SdHoareTripleChecker+Invalid, 4398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 4386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:17,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1615 Valid, 18262 Invalid, 4398 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 4386 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-28 02:12:17,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20252 states. [2024-11-28 02:12:19,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20252 to 18269. [2024-11-28 02:12:19,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18269 states, 15819 states have (on average 1.5689993046336683) internal successors, (24820), 15819 states have internal predecessors, (24820), 2448 states have call successors, (2448), 1 states have call predecessors, (2448), 1 states have return successors, (2448), 2448 states have call predecessors, (2448), 2448 states have call successors, (2448) [2024-11-28 02:12:19,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18269 states to 18269 states and 29716 transitions. [2024-11-28 02:12:19,488 INFO L78 Accepts]: Start accepts. Automaton has 18269 states and 29716 transitions. Word has length 2368 [2024-11-28 02:12:19,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:19,491 INFO L471 AbstractCegarLoop]: Abstraction has 18269 states and 29716 transitions. [2024-11-28 02:12:19,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 71.63636363636364) internal successors, (788), 11 states have internal predecessors, (788), 6 states have call successors, (514), 2 states have call predecessors, (514), 3 states have return successors, (514), 6 states have call predecessors, (514), 6 states have call successors, (514) [2024-11-28 02:12:19,492 INFO L276 IsEmpty]: Start isEmpty. Operand 18269 states and 29716 transitions. [2024-11-28 02:12:19,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2369 [2024-11-28 02:12:19,588 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:19,589 INFO L218 NwaCegarLoop]: trace histogram [357, 357, 357, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:19,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:12:19,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-28 02:12:19,790 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:19,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:19,792 INFO L85 PathProgramCache]: Analyzing trace with hash 166696726, now seen corresponding path program 1 times [2024-11-28 02:12:19,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:19,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311894279] [2024-11-28 02:12:19,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:19,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:27,329 INFO L134 CoverageAnalysis]: Checked inductivity of 254184 backedges. 672 proven. 1458 refuted. 0 times theorem prover too weak. 252054 trivial. 0 not checked. [2024-11-28 02:12:27,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:27,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311894279] [2024-11-28 02:12:27,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311894279] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:12:27,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017412429] [2024-11-28 02:12:27,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:27,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:12:27,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:12:27,333 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:12:27,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:12:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:28,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 4565 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 02:12:28,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:12:30,275 INFO L134 CoverageAnalysis]: Checked inductivity of 254184 backedges. 49160 proven. 1230 refuted. 0 times theorem prover too weak. 203794 trivial. 0 not checked. [2024-11-28 02:12:30,276 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:12:33,211 INFO L134 CoverageAnalysis]: Checked inductivity of 254184 backedges. 672 proven. 1458 refuted. 0 times theorem prover too weak. 252054 trivial. 0 not checked. [2024-11-28 02:12:33,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017412429] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:12:33,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:12:33,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2024-11-28 02:12:33,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960348719] [2024-11-28 02:12:33,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:12:33,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:12:33,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:33,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:12:33,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:12:33,216 INFO L87 Difference]: Start difference. First operand 18269 states and 29716 transitions. Second operand has 11 states, 10 states have (on average 70.3) internal successors, (703), 10 states have internal predecessors, (703), 8 states have call successors, (430), 2 states have call predecessors, (430), 3 states have return successors, (430), 8 states have call predecessors, (430), 8 states have call successors, (430) [2024-11-28 02:12:39,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:39,377 INFO L93 Difference]: Finished difference Result 55318 states and 89978 transitions. [2024-11-28 02:12:39,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:12:39,378 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 70.3) internal successors, (703), 10 states have internal predecessors, (703), 8 states have call successors, (430), 2 states have call predecessors, (430), 3 states have return successors, (430), 8 states have call predecessors, (430), 8 states have call successors, (430) Word has length 2368 [2024-11-28 02:12:39,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:39,487 INFO L225 Difference]: With dead ends: 55318 [2024-11-28 02:12:39,487 INFO L226 Difference]: Without dead ends: 42169 [2024-11-28 02:12:39,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4749 GetRequests, 4734 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:12:39,526 INFO L435 NwaCegarLoop]: 3381 mSDtfsCounter, 12543 mSDsluCounter, 15481 mSDsCounter, 0 mSdLazyCounter, 4650 mSolverCounterSat, 581 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12729 SdHoareTripleChecker+Valid, 18862 SdHoareTripleChecker+Invalid, 5231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 4650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:39,527 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12729 Valid, 18862 Invalid, 5231 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [581 Valid, 4650 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-28 02:12:39,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42169 states. [2024-11-28 02:12:44,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42169 to 36582. [2024-11-28 02:12:44,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36582 states, 31823 states have (on average 1.5685510479841624) internal successors, (49916), 31823 states have internal predecessors, (49916), 4757 states have call successors, (4757), 1 states have call predecessors, (4757), 1 states have return successors, (4757), 4757 states have call predecessors, (4757), 4757 states have call successors, (4757) [2024-11-28 02:12:44,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36582 states to 36582 states and 59430 transitions. [2024-11-28 02:12:44,430 INFO L78 Accepts]: Start accepts. Automaton has 36582 states and 59430 transitions. Word has length 2368 [2024-11-28 02:12:44,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:44,433 INFO L471 AbstractCegarLoop]: Abstraction has 36582 states and 59430 transitions. [2024-11-28 02:12:44,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 70.3) internal successors, (703), 10 states have internal predecessors, (703), 8 states have call successors, (430), 2 states have call predecessors, (430), 3 states have return successors, (430), 8 states have call predecessors, (430), 8 states have call successors, (430) [2024-11-28 02:12:44,434 INFO L276 IsEmpty]: Start isEmpty. Operand 36582 states and 59430 transitions. [2024-11-28 02:12:44,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2369 [2024-11-28 02:12:44,569 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:44,570 INFO L218 NwaCegarLoop]: trace histogram [357, 357, 357, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:44,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:12:44,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:12:44,771 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:44,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:44,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1314304532, now seen corresponding path program 1 times [2024-11-28 02:12:44,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:44,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862117672] [2024-11-28 02:12:44,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:44,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:17,186 INFO L134 CoverageAnalysis]: Checked inductivity of 254184 backedges. 1761 proven. 9657 refuted. 0 times theorem prover too weak. 242766 trivial. 0 not checked. [2024-11-28 02:13:17,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:17,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862117672] [2024-11-28 02:13:17,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862117672] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:13:17,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545406636] [2024-11-28 02:13:17,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:17,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:13:17,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:13:17,189 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:13:17,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4517a3a-5944-4574-b1a2-70f334871d8b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:13:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:17,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 4565 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-28 02:13:17,978 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:13:26,806 INFO L134 CoverageAnalysis]: Checked inductivity of 254184 backedges. 37568 proven. 5094 refuted. 0 times theorem prover too weak. 211522 trivial. 0 not checked. [2024-11-28 02:13:26,806 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:13:38,340 INFO L134 CoverageAnalysis]: Checked inductivity of 254184 backedges. 720 proven. 5598 refuted. 0 times theorem prover too weak. 247866 trivial. 0 not checked. [2024-11-28 02:13:38,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545406636] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:13:38,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:13:38,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 15, 15] total 40 [2024-11-28 02:13:38,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319538256] [2024-11-28 02:13:38,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:13:38,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-28 02:13:38,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:38,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-28 02:13:38,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1369, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 02:13:38,347 INFO L87 Difference]: Start difference. First operand 36582 states and 59430 transitions. Second operand has 40 states, 29 states have (on average 51.689655172413794) internal successors, (1499), 30 states have internal predecessors, (1499), 37 states have call successors, (986), 2 states have call predecessors, (986), 3 states have return successors, (989), 36 states have call predecessors, (989), 37 states have call successors, (989)