./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/aim-100-1-6-unsat-3.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_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/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_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/aim-100-1-6-unsat-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/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_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/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 d30251847c471692a2c7cfaf060cedad53374742a61982ae6df13e30693da17d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:21:46,760 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:21:46,864 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:21:46,869 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:21:46,869 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:21:46,904 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:21:46,905 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:21:46,905 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:21:46,906 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:21:46,906 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:21:46,907 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:21:46,907 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:21:46,908 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:21:46,908 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:21:46,908 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:21:46,909 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:21:46,909 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:21:46,909 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:21:46,909 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:21:46,909 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:21:46,909 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:21:46,909 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:21:46,909 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:21:46,909 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:21:46,909 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:21:46,909 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:21:46,910 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:21:46,910 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:21:46,910 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:21:46,910 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:21:46,911 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:21:46,911 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:21:46,911 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:21:46,911 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:21:46,911 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:21:46,911 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:21:46,912 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:21:46,912 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:21:46,912 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:21:46,912 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:21:46,912 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:21:46,912 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:21:46,912 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:21:46,912 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:21:46,913 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:21:46,913 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:21:46,913 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:21:46,913 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:21:46,913 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_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/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 -> d30251847c471692a2c7cfaf060cedad53374742a61982ae6df13e30693da17d [2024-11-28 03:21:47,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:21:47,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:21:47,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:21:47,281 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:21:47,281 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:21:47,282 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/xcsp/aim-100-1-6-unsat-3.c [2024-11-28 03:21:50,226 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/data/16015e6e5/9fd5ebc626fb4eb6925bf8a12c3fa758/FLAG1fa912769 [2024-11-28 03:21:50,642 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:21:50,645 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/sv-benchmarks/c/xcsp/aim-100-1-6-unsat-3.c [2024-11-28 03:21:50,669 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/data/16015e6e5/9fd5ebc626fb4eb6925bf8a12c3fa758/FLAG1fa912769 [2024-11-28 03:21:50,691 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/data/16015e6e5/9fd5ebc626fb4eb6925bf8a12c3fa758 [2024-11-28 03:21:50,694 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:21:50,696 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:21:50,698 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:21:50,698 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:21:50,703 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:21:50,704 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:21:50" (1/1) ... [2024-11-28 03:21:50,705 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25c9f980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:50, skipping insertion in model container [2024-11-28 03:21:50,705 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:21:50" (1/1) ... [2024-11-28 03:21:50,752 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:21:51,172 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_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/sv-benchmarks/c/xcsp/aim-100-1-6-unsat-3.c[18875,18888] [2024-11-28 03:21:51,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:21:51,213 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:21:51,363 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_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/sv-benchmarks/c/xcsp/aim-100-1-6-unsat-3.c[18875,18888] [2024-11-28 03:21:51,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:21:51,404 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:21:51,404 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:51 WrapperNode [2024-11-28 03:21:51,404 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:21:51,405 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:21:51,406 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:21:51,406 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:21:51,412 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:51" (1/1) ... [2024-11-28 03:21:51,442 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:51" (1/1) ... [2024-11-28 03:21:51,672 INFO L138 Inliner]: procedures = 13, calls = 359, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3412 [2024-11-28 03:21:51,672 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:21:51,673 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:21:51,674 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:21:51,674 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:21:51,684 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:51" (1/1) ... [2024-11-28 03:21:51,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:51" (1/1) ... [2024-11-28 03:21:51,783 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:51" (1/1) ... [2024-11-28 03:21:51,859 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 03:21:51,859 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:51" (1/1) ... [2024-11-28 03:21:51,859 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:51" (1/1) ... [2024-11-28 03:21:51,957 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:51" (1/1) ... [2024-11-28 03:21:51,976 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:51" (1/1) ... [2024-11-28 03:21:52,008 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:51" (1/1) ... [2024-11-28 03:21:52,040 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:51" (1/1) ... [2024-11-28 03:21:52,057 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:51" (1/1) ... [2024-11-28 03:21:52,103 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:21:52,105 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:21:52,106 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:21:52,106 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:21:52,107 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:51" (1/1) ... [2024-11-28 03:21:52,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:21:52,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:21:52,148 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:21:52,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:21:52,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:21:52,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:21:52,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:21:52,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:21:52,185 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2024-11-28 03:21:52,185 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2024-11-28 03:21:52,437 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:21:52,439 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:21:57,532 INFO L? ?]: Removed 803 outVars from TransFormulas that were not future-live. [2024-11-28 03:21:57,533 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:21:57,598 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:21:57,602 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 03:21:57,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:21:57 BoogieIcfgContainer [2024-11-28 03:21:57,602 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:21:57,605 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:21:57,605 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:21:57,632 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:21:57,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:21:50" (1/3) ... [2024-11-28 03:21:57,634 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54017a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:21:57, skipping insertion in model container [2024-11-28 03:21:57,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:51" (2/3) ... [2024-11-28 03:21:57,634 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54017a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:21:57, skipping insertion in model container [2024-11-28 03:21:57,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:21:57" (3/3) ... [2024-11-28 03:21:57,637 INFO L128 eAbstractionObserver]: Analyzing ICFG aim-100-1-6-unsat-3.c [2024-11-28 03:21:57,658 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:21:57,660 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aim-100-1-6-unsat-3.c that has 2 procedures, 1569 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-28 03:21:57,798 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:21:57,817 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;@48b51331, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:21:57,817 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:21:57,829 INFO L276 IsEmpty]: Start isEmpty. Operand has 1569 states, 1214 states have (on average 1.5255354200988467) internal successors, (1852), 1215 states have internal predecessors, (1852), 352 states have call successors, (352), 1 states have call predecessors, (352), 1 states have return successors, (352), 352 states have call predecessors, (352), 352 states have call successors, (352) [2024-11-28 03:21:58,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2334 [2024-11-28 03:21:58,045 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:21:58,047 INFO L218 NwaCegarLoop]: trace histogram [352, 352, 352, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:21:58,048 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:21:58,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:21:58,056 INFO L85 PathProgramCache]: Analyzing trace with hash 108099918, now seen corresponding path program 1 times [2024-11-28 03:21:58,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:21:58,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042021132] [2024-11-28 03:21:58,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:21:58,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:22:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:23:44,925 INFO L134 CoverageAnalysis]: Checked inductivity of 247104 backedges. 3423 proven. 24678 refuted. 0 times theorem prover too weak. 219003 trivial. 0 not checked. [2024-11-28 03:23:44,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:23:44,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042021132] [2024-11-28 03:23:44,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042021132] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:23:44,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261362754] [2024-11-28 03:23:44,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:23:44,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:23:44,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:23:44,938 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:23:44,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:23:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:23:46,013 INFO L256 TraceCheckSpWp]: Trace formula consists of 4500 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-28 03:23:46,068 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:24:02,302 INFO L134 CoverageAnalysis]: Checked inductivity of 247104 backedges. 16600 proven. 6396 refuted. 0 times theorem prover too weak. 224108 trivial. 0 not checked. [2024-11-28 03:24:02,303 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:24:23,819 INFO L134 CoverageAnalysis]: Checked inductivity of 247104 backedges. 1596 proven. 6660 refuted. 0 times theorem prover too weak. 238848 trivial. 0 not checked. [2024-11-28 03:24:23,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261362754] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:24:23,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:24:23,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 16, 16] total 86 [2024-11-28 03:24:23,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28878641] [2024-11-28 03:24:23,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:24:23,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-11-28 03:24:23,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:24:23,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-11-28 03:24:23,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=6849, Unknown=0, NotChecked=0, Total=7310 [2024-11-28 03:24:23,909 INFO L87 Difference]: Start difference. First operand has 1569 states, 1214 states have (on average 1.5255354200988467) internal successors, (1852), 1215 states have internal predecessors, (1852), 352 states have call successors, (352), 1 states have call predecessors, (352), 1 states have return successors, (352), 352 states have call predecessors, (352), 352 states have call successors, (352) Second operand has 86 states, 53 states have (on average 28.69811320754717) internal successors, (1521), 62 states have internal predecessors, (1521), 78 states have call successors, (959), 2 states have call predecessors, (959), 3 states have return successors, (961), 69 states have call predecessors, (961), 78 states have call successors, (961) [2024-11-28 03:27:04,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:04,273 INFO L93 Difference]: Finished difference Result 23837 states and 41785 transitions. [2024-11-28 03:27:04,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2024-11-28 03:27:04,280 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 53 states have (on average 28.69811320754717) internal successors, (1521), 62 states have internal predecessors, (1521), 78 states have call successors, (959), 2 states have call predecessors, (959), 3 states have return successors, (961), 69 states have call predecessors, (961), 78 states have call successors, (961) Word has length 2333 [2024-11-28 03:27:04,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:04,423 INFO L225 Difference]: With dead ends: 23837 [2024-11-28 03:27:04,424 INFO L226 Difference]: Without dead ends: 22271 [2024-11-28 03:27:04,472 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5007 GetRequests, 4707 SyntacticMatches, 8 SemanticMatches, 292 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28063 ImplicationChecksByTransitivity, 80.7s TimeCoverageRelationStatistics Valid=14650, Invalid=71492, Unknown=0, NotChecked=0, Total=86142 [2024-11-28 03:27:04,477 INFO L435 NwaCegarLoop]: 7172 mSDtfsCounter, 156710 mSDsluCounter, 142311 mSDsCounter, 0 mSdLazyCounter, 39886 mSolverCounterSat, 15475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156730 SdHoareTripleChecker+Valid, 149483 SdHoareTripleChecker+Invalid, 55361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.8s SdHoareTripleChecker+Time, 15475 IncrementalHoareTripleChecker+Valid, 39886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:04,479 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [156730 Valid, 149483 Invalid, 55361 Unknown, 0 Unchecked, 0.8s Time], IncrementalHoareTripleChecker [15475 Valid, 39886 Invalid, 0 Unknown, 0 Unchecked, 73.2s Time] [2024-11-28 03:27:04,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22271 states. [2024-11-28 03:27:07,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22271 to 12208. [2024-11-28 03:27:07,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12208 states, 10527 states have (on average 1.567683100598461) internal successors, (16503), 10527 states have internal predecessors, (16503), 1679 states have call successors, (1679), 1 states have call predecessors, (1679), 1 states have return successors, (1679), 1679 states have call predecessors, (1679), 1679 states have call successors, (1679) [2024-11-28 03:27:07,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12208 states to 12208 states and 19861 transitions. [2024-11-28 03:27:07,242 INFO L78 Accepts]: Start accepts. Automaton has 12208 states and 19861 transitions. Word has length 2333 [2024-11-28 03:27:07,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:07,255 INFO L471 AbstractCegarLoop]: Abstraction has 12208 states and 19861 transitions. [2024-11-28 03:27:07,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 53 states have (on average 28.69811320754717) internal successors, (1521), 62 states have internal predecessors, (1521), 78 states have call successors, (959), 2 states have call predecessors, (959), 3 states have return successors, (961), 69 states have call predecessors, (961), 78 states have call successors, (961) [2024-11-28 03:27:07,260 INFO L276 IsEmpty]: Start isEmpty. Operand 12208 states and 19861 transitions. [2024-11-28 03:27:07,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2336 [2024-11-28 03:27:07,458 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:07,460 INFO L218 NwaCegarLoop]: trace histogram [352, 352, 352, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:27:07,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:27:07,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 03:27:07,661 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:27:07,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:07,665 INFO L85 PathProgramCache]: Analyzing trace with hash -787186776, now seen corresponding path program 1 times [2024-11-28 03:27:07,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:07,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187569992] [2024-11-28 03:27:07,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:07,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:23,204 INFO L134 CoverageAnalysis]: Checked inductivity of 247104 backedges. 1098 proven. 4107 refuted. 0 times theorem prover too weak. 241899 trivial. 0 not checked. [2024-11-28 03:27:23,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:27:23,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187569992] [2024-11-28 03:27:23,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187569992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:27:23,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520908196] [2024-11-28 03:27:23,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:23,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:23,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:23,210 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:23,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:27:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:24,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 4506 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 03:27:24,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:28,755 INFO L134 CoverageAnalysis]: Checked inductivity of 247104 backedges. 15808 proven. 3240 refuted. 0 times theorem prover too weak. 228056 trivial. 0 not checked. [2024-11-28 03:27:28,755 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:27:33,813 INFO L134 CoverageAnalysis]: Checked inductivity of 247104 backedges. 804 proven. 3372 refuted. 0 times theorem prover too weak. 242928 trivial. 0 not checked. [2024-11-28 03:27:33,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520908196] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:27:33,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:27:33,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2024-11-28 03:27:33,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693003189] [2024-11-28 03:27:33,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:27:33,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:27:33,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:27:33,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:27:33,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:27:33,827 INFO L87 Difference]: Start difference. First operand 12208 states and 19861 transitions. Second operand has 16 states, 13 states have (on average 62.84615384615385) internal successors, (817), 13 states have internal predecessors, (817), 13 states have call successors, (506), 2 states have call predecessors, (506), 3 states have return successors, (508), 13 states have call predecessors, (508), 13 states have call successors, (508) [2024-11-28 03:27:42,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:42,960 INFO L93 Difference]: Finished difference Result 47615 states and 77481 transitions. [2024-11-28 03:27:42,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:27:42,962 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 62.84615384615385) internal successors, (817), 13 states have internal predecessors, (817), 13 states have call successors, (506), 2 states have call predecessors, (506), 3 states have return successors, (508), 13 states have call predecessors, (508), 13 states have call successors, (508) Word has length 2335 [2024-11-28 03:27:42,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:43,115 INFO L225 Difference]: With dead ends: 47615 [2024-11-28 03:27:43,115 INFO L226 Difference]: Without dead ends: 38409 [2024-11-28 03:27:43,148 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4695 GetRequests, 4672 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2024-11-28 03:27:43,149 INFO L435 NwaCegarLoop]: 3746 mSDtfsCounter, 20348 mSDsluCounter, 19355 mSDsCounter, 0 mSdLazyCounter, 4653 mSolverCounterSat, 1356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20539 SdHoareTripleChecker+Valid, 23101 SdHoareTripleChecker+Invalid, 6009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1356 IncrementalHoareTripleChecker+Valid, 4653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:43,150 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20539 Valid, 23101 Invalid, 6009 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1356 Valid, 4653 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-28 03:27:43,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38409 states. [2024-11-28 03:27:47,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38409 to 22226. [2024-11-28 03:27:47,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22226 states, 19279 states have (on average 1.5684423465947404) internal successors, (30238), 19279 states have internal predecessors, (30238), 2945 states have call successors, (2945), 1 states have call predecessors, (2945), 1 states have return successors, (2945), 2945 states have call predecessors, (2945), 2945 states have call successors, (2945) [2024-11-28 03:27:47,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22226 states to 22226 states and 36128 transitions. [2024-11-28 03:27:47,766 INFO L78 Accepts]: Start accepts. Automaton has 22226 states and 36128 transitions. Word has length 2335 [2024-11-28 03:27:47,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:47,769 INFO L471 AbstractCegarLoop]: Abstraction has 22226 states and 36128 transitions. [2024-11-28 03:27:47,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 62.84615384615385) internal successors, (817), 13 states have internal predecessors, (817), 13 states have call successors, (506), 2 states have call predecessors, (506), 3 states have return successors, (508), 13 states have call predecessors, (508), 13 states have call successors, (508) [2024-11-28 03:27:47,770 INFO L276 IsEmpty]: Start isEmpty. Operand 22226 states and 36128 transitions. [2024-11-28 03:27:47,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2336 [2024-11-28 03:27:47,876 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:47,877 INFO L218 NwaCegarLoop]: trace histogram [352, 352, 352, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-11-28 03:27:47,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:27:48,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:48,083 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:27:48,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:48,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1809855342, now seen corresponding path program 1 times [2024-11-28 03:27:48,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:48,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271579090] [2024-11-28 03:27:48,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:48,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:57,147 INFO L134 CoverageAnalysis]: Checked inductivity of 247104 backedges. 672 proven. 1428 refuted. 0 times theorem prover too weak. 245004 trivial. 0 not checked. [2024-11-28 03:27:57,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:27:57,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271579090] [2024-11-28 03:27:57,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271579090] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:27:57,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107712683] [2024-11-28 03:27:57,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:57,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:57,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:57,150 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:57,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:27:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:58,186 INFO L256 TraceCheckSpWp]: Trace formula consists of 4506 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:27:58,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:00,464 INFO L134 CoverageAnalysis]: Checked inductivity of 247104 backedges. 18300 proven. 1350 refuted. 0 times theorem prover too weak. 227454 trivial. 0 not checked. [2024-11-28 03:28:00,464 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:28:03,785 INFO L134 CoverageAnalysis]: Checked inductivity of 247104 backedges. 672 proven. 1428 refuted. 0 times theorem prover too weak. 245004 trivial. 0 not checked. [2024-11-28 03:28:03,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107712683] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:28:03,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:28:03,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-28 03:28:03,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4621923] [2024-11-28 03:28:03,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:28:03,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:28:03,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:28:03,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:28:03,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:28:03,791 INFO L87 Difference]: Start difference. First operand 22226 states and 36128 transitions. Second operand has 12 states, 11 states have (on average 53.63636363636363) internal successors, (590), 11 states have internal predecessors, (590), 5 states have call successors, (365), 2 states have call predecessors, (365), 3 states have return successors, (365), 5 states have call predecessors, (365), 5 states have call successors, (365) [2024-11-28 03:28:08,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:08,552 INFO L93 Difference]: Finished difference Result 27575 states and 44822 transitions. [2024-11-28 03:28:08,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:28:08,553 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 53.63636363636363) internal successors, (590), 11 states have internal predecessors, (590), 5 states have call successors, (365), 2 states have call predecessors, (365), 3 states have return successors, (365), 5 states have call predecessors, (365), 5 states have call successors, (365) Word has length 2335 [2024-11-28 03:28:08,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:08,641 INFO L225 Difference]: With dead ends: 27575 [2024-11-28 03:28:08,642 INFO L226 Difference]: Without dead ends: 27215 [2024-11-28 03:28:08,650 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4684 GetRequests, 4665 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:28:08,650 INFO L435 NwaCegarLoop]: 2631 mSDtfsCounter, 4179 mSDsluCounter, 12397 mSDsCounter, 0 mSdLazyCounter, 3378 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4261 SdHoareTripleChecker+Valid, 15028 SdHoareTripleChecker+Invalid, 3456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 3378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:08,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4261 Valid, 15028 Invalid, 3456 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 3378 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-28 03:28:08,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27215 states. [2024-11-28 03:28:12,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27215 to 24197. [2024-11-28 03:28:12,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24197 states, 21000 states have (on average 1.5683809523809524) internal successors, (32936), 21000 states have internal predecessors, (32936), 3195 states have call successors, (3195), 1 states have call predecessors, (3195), 1 states have return successors, (3195), 3195 states have call predecessors, (3195), 3195 states have call successors, (3195) [2024-11-28 03:28:12,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24197 states to 24197 states and 39326 transitions. [2024-11-28 03:28:12,165 INFO L78 Accepts]: Start accepts. Automaton has 24197 states and 39326 transitions. Word has length 2335 [2024-11-28 03:28:12,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:12,169 INFO L471 AbstractCegarLoop]: Abstraction has 24197 states and 39326 transitions. [2024-11-28 03:28:12,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 53.63636363636363) internal successors, (590), 11 states have internal predecessors, (590), 5 states have call successors, (365), 2 states have call predecessors, (365), 3 states have return successors, (365), 5 states have call predecessors, (365), 5 states have call successors, (365) [2024-11-28 03:28:12,170 INFO L276 IsEmpty]: Start isEmpty. Operand 24197 states and 39326 transitions. [2024-11-28 03:28:12,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2336 [2024-11-28 03:28:12,273 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:12,275 INFO L218 NwaCegarLoop]: trace histogram [352, 352, 352, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-11-28 03:28:12,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:28:12,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:12,476 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:28:12,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:12,477 INFO L85 PathProgramCache]: Analyzing trace with hash 627830830, now seen corresponding path program 1 times [2024-11-28 03:28:12,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:28:12,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152755434] [2024-11-28 03:28:12,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:12,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:28:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:20,247 INFO L134 CoverageAnalysis]: Checked inductivity of 247104 backedges. 672 proven. 1428 refuted. 0 times theorem prover too weak. 245004 trivial. 0 not checked. [2024-11-28 03:28:20,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:28:20,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152755434] [2024-11-28 03:28:20,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152755434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:28:20,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712025513] [2024-11-28 03:28:20,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:20,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:20,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:20,250 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:20,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:28:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:21,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 4506 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:28:21,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:23,908 INFO L134 CoverageAnalysis]: Checked inductivity of 247104 backedges. 18300 proven. 1350 refuted. 0 times theorem prover too weak. 227454 trivial. 0 not checked. [2024-11-28 03:28:23,908 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:28:27,935 INFO L134 CoverageAnalysis]: Checked inductivity of 247104 backedges. 672 proven. 1428 refuted. 0 times theorem prover too weak. 245004 trivial. 0 not checked. [2024-11-28 03:28:27,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712025513] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:28:27,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:28:27,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-28 03:28:27,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127887265] [2024-11-28 03:28:27,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:28:27,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:28:27,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:28:27,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:28:27,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:28:27,940 INFO L87 Difference]: Start difference. First operand 24197 states and 39326 transitions. Second operand has 12 states, 11 states have (on average 53.63636363636363) internal successors, (590), 11 states have internal predecessors, (590), 5 states have call successors, (365), 2 states have call predecessors, (365), 3 states have return successors, (365), 5 states have call predecessors, (365), 5 states have call successors, (365) [2024-11-28 03:28:33,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:33,248 INFO L93 Difference]: Finished difference Result 37445 states and 60854 transitions. [2024-11-28 03:28:33,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:28:33,249 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 53.63636363636363) internal successors, (590), 11 states have internal predecessors, (590), 5 states have call successors, (365), 2 states have call predecessors, (365), 3 states have return successors, (365), 5 states have call predecessors, (365), 5 states have call successors, (365) Word has length 2335 [2024-11-28 03:28:33,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:33,368 INFO L225 Difference]: With dead ends: 37445 [2024-11-28 03:28:33,368 INFO L226 Difference]: Without dead ends: 32150 [2024-11-28 03:28:33,394 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4683 GetRequests, 4665 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:28:33,396 INFO L435 NwaCegarLoop]: 2481 mSDtfsCounter, 3845 mSDsluCounter, 11853 mSDsCounter, 0 mSdLazyCounter, 3824 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3927 SdHoareTripleChecker+Valid, 14334 SdHoareTripleChecker+Invalid, 3873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 3824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:33,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3927 Valid, 14334 Invalid, 3873 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 3824 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-28 03:28:33,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32150 states. [2024-11-28 03:28:37,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32150 to 25220. [2024-11-28 03:28:37,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25220 states, 21898 states have (on average 1.5682710749840167) internal successors, (34342), 21898 states have internal predecessors, (34342), 3320 states have call successors, (3320), 1 states have call predecessors, (3320), 1 states have return successors, (3320), 3320 states have call predecessors, (3320), 3320 states have call successors, (3320) [2024-11-28 03:28:37,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25220 states to 25220 states and 40982 transitions. [2024-11-28 03:28:37,384 INFO L78 Accepts]: Start accepts. Automaton has 25220 states and 40982 transitions. Word has length 2335 [2024-11-28 03:28:37,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:37,388 INFO L471 AbstractCegarLoop]: Abstraction has 25220 states and 40982 transitions. [2024-11-28 03:28:37,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 53.63636363636363) internal successors, (590), 11 states have internal predecessors, (590), 5 states have call successors, (365), 2 states have call predecessors, (365), 3 states have return successors, (365), 5 states have call predecessors, (365), 5 states have call successors, (365) [2024-11-28 03:28:37,388 INFO L276 IsEmpty]: Start isEmpty. Operand 25220 states and 40982 transitions. [2024-11-28 03:28:37,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2336 [2024-11-28 03:28:37,487 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:37,489 INFO L218 NwaCegarLoop]: trace histogram [352, 352, 352, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:28:37,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:28:37,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:37,690 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:28:37,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:37,692 INFO L85 PathProgramCache]: Analyzing trace with hash -637814918, now seen corresponding path program 1 times [2024-11-28 03:28:37,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:28:37,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307735224] [2024-11-28 03:28:37,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:37,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:28:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:50,407 INFO L134 CoverageAnalysis]: Checked inductivity of 247104 backedges. 804 proven. 3372 refuted. 0 times theorem prover too weak. 242928 trivial. 0 not checked. [2024-11-28 03:28:50,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:28:50,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307735224] [2024-11-28 03:28:50,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307735224] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:28:50,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942839741] [2024-11-28 03:28:50,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:50,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:50,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:50,412 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:50,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65bbb438-82f8-4a06-bd2c-2b0f15a014b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:28:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:51,182 INFO L256 TraceCheckSpWp]: Trace formula consists of 4506 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-28 03:28:51,207 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:29:07,146 INFO L134 CoverageAnalysis]: Checked inductivity of 247104 backedges. 20704 proven. 6144 refuted. 0 times theorem prover too weak. 220256 trivial. 0 not checked. [2024-11-28 03:29:07,146 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:29:33,128 INFO L134 CoverageAnalysis]: Checked inductivity of 247104 backedges. 1776 proven. 6480 refuted. 0 times theorem prover too weak. 238848 trivial. 0 not checked. [2024-11-28 03:29:33,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942839741] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:29:33,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:29:33,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 17] total 36 [2024-11-28 03:29:33,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335156777] [2024-11-28 03:29:33,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:29:33,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-28 03:29:33,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:29:33,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-28 03:29:33,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1066, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 03:29:33,137 INFO L87 Difference]: Start difference. First operand 25220 states and 40982 transitions. Second operand has 36 states, 27 states have (on average 54.55555555555556) internal successors, (1473), 27 states have internal predecessors, (1473), 29 states have call successors, (923), 2 states have call predecessors, (923), 3 states have return successors, (925), 29 states have call predecessors, (925), 29 states have call successors, (925) [2024-11-28 03:30:24,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:24,601 INFO L93 Difference]: Finished difference Result 238787 states and 388585 transitions. [2024-11-28 03:30:24,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2024-11-28 03:30:24,602 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 27 states have (on average 54.55555555555556) internal successors, (1473), 27 states have internal predecessors, (1473), 29 states have call successors, (923), 2 states have call predecessors, (923), 3 states have return successors, (925), 29 states have call predecessors, (925), 29 states have call successors, (925) Word has length 2335 [2024-11-28 03:30:24,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:25,353 INFO L225 Difference]: With dead ends: 238787 [2024-11-28 03:30:25,353 INFO L226 Difference]: Without dead ends: 227873 [2024-11-28 03:30:25,428 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4796 GetRequests, 4651 SyntacticMatches, 3 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6015 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=5920, Invalid=14672, Unknown=0, NotChecked=0, Total=20592 [2024-11-28 03:30:25,429 INFO L435 NwaCegarLoop]: 6657 mSDtfsCounter, 51002 mSDsluCounter, 78304 mSDsCounter, 0 mSdLazyCounter, 16221 mSolverCounterSat, 3461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51044 SdHoareTripleChecker+Valid, 84961 SdHoareTripleChecker+Invalid, 19682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 3461 IncrementalHoareTripleChecker+Valid, 16221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:25,429 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51044 Valid, 84961 Invalid, 19682 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [3461 Valid, 16221 Invalid, 0 Unknown, 0 Unchecked, 18.5s Time] [2024-11-28 03:30:25,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227873 states.