./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/aim-200-1-6-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_3b28ad31-f94b-4774-ab76-4dcc219b15c5/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b28ad31-f94b-4774-ab76-4dcc219b15c5/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_3b28ad31-f94b-4774-ab76-4dcc219b15c5/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b28ad31-f94b-4774-ab76-4dcc219b15c5/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/aim-200-1-6-unsat-4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b28ad31-f94b-4774-ab76-4dcc219b15c5/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_3b28ad31-f94b-4774-ab76-4dcc219b15c5/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 1b001f470c24a62f4bd3e3be8a0014201f5c74288200955d224f93106cd478ae --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:21:13,827 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:21:13,901 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b28ad31-f94b-4774-ab76-4dcc219b15c5/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 05:21:13,912 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:21:13,912 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:21:13,954 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:21:13,955 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:21:13,956 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:21:13,956 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:21:13,957 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:21:13,958 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:21:13,958 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:21:13,958 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:21:13,958 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:21:13,959 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:21:13,959 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:21:13,959 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:21:13,959 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:21:13,960 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:21:13,960 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:21:13,960 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:21:13,960 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:21:13,960 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:21:13,960 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:21:13,960 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:21:13,961 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:21:13,961 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:21:13,961 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:21:13,961 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:21:13,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:21:13,961 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:21:13,961 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:21:13,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:21:13,962 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:21:13,962 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:21:13,963 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:21:13,963 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:21:13,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:21:13,963 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:21:13,963 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:21:13,963 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:21:13,963 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:21:13,963 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:21:13,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:21:13,964 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:21:13,964 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:21:13,964 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:21:13,964 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:21:13,964 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_3b28ad31-f94b-4774-ab76-4dcc219b15c5/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 -> 1b001f470c24a62f4bd3e3be8a0014201f5c74288200955d224f93106cd478ae [2024-11-28 05:21:14,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:21:14,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:21:14,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:21:14,276 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:21:14,276 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:21:14,278 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b28ad31-f94b-4774-ab76-4dcc219b15c5/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/xcsp/aim-200-1-6-unsat-4.c [2024-11-28 05:21:17,162 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b28ad31-f94b-4774-ab76-4dcc219b15c5/bin/uautomizer-verify-aQ6SnzHsRB/data/d7886ad19/a6e67d9bc8664a90abe62e490267a836/FLAG32301df01 [2024-11-28 05:21:17,549 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:21:17,554 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b28ad31-f94b-4774-ab76-4dcc219b15c5/sv-benchmarks/c/xcsp/aim-200-1-6-unsat-4.c [2024-11-28 05:21:17,576 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b28ad31-f94b-4774-ab76-4dcc219b15c5/bin/uautomizer-verify-aQ6SnzHsRB/data/d7886ad19/a6e67d9bc8664a90abe62e490267a836/FLAG32301df01 [2024-11-28 05:21:17,599 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b28ad31-f94b-4774-ab76-4dcc219b15c5/bin/uautomizer-verify-aQ6SnzHsRB/data/d7886ad19/a6e67d9bc8664a90abe62e490267a836 [2024-11-28 05:21:17,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:21:17,605 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:21:17,606 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:21:17,608 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:21:17,612 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:21:17,613 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:21:17" (1/1) ... [2024-11-28 05:21:17,614 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aa782cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:17, skipping insertion in model container [2024-11-28 05:21:17,616 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:21:17" (1/1) ... [2024-11-28 05:21:17,667 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:21:18,172 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_3b28ad31-f94b-4774-ab76-4dcc219b15c5/sv-benchmarks/c/xcsp/aim-200-1-6-unsat-4.c[38269,38282] [2024-11-28 05:21:18,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:21:18,217 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:21:18,493 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_3b28ad31-f94b-4774-ab76-4dcc219b15c5/sv-benchmarks/c/xcsp/aim-200-1-6-unsat-4.c[38269,38282] [2024-11-28 05:21:18,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:21:18,527 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:21:18,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:18 WrapperNode [2024-11-28 05:21:18,530 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:21:18,531 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:21:18,531 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:21:18,532 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:21:18,540 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:18" (1/1) ... [2024-11-28 05:21:18,646 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:18" (1/1) ... [2024-11-28 05:21:19,135 INFO L138 Inliner]: procedures = 13, calls = 723, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 6884 [2024-11-28 05:21:19,136 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:21:19,138 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:21:19,138 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:21:19,138 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:21:19,149 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:18" (1/1) ... [2024-11-28 05:21:19,149 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:18" (1/1) ... [2024-11-28 05:21:19,214 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:18" (1/1) ... [2024-11-28 05:21:19,378 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 05:21:19,378 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:18" (1/1) ... [2024-11-28 05:21:19,378 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:18" (1/1) ... [2024-11-28 05:21:19,614 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:18" (1/1) ... [2024-11-28 05:21:19,630 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:18" (1/1) ... [2024-11-28 05:21:19,706 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:18" (1/1) ... [2024-11-28 05:21:19,754 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:18" (1/1) ... [2024-11-28 05:21:19,782 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:18" (1/1) ... [2024-11-28 05:21:19,860 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:21:19,861 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:21:19,861 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:21:19,861 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:21:19,863 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:18" (1/1) ... [2024-11-28 05:21:19,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:21:19,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b28ad31-f94b-4774-ab76-4dcc219b15c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:21:19,898 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b28ad31-f94b-4774-ab76-4dcc219b15c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:21:19,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b28ad31-f94b-4774-ab76-4dcc219b15c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:21:19,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:21:19,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:21:19,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:21:19,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:21:19,936 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2024-11-28 05:21:19,936 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2024-11-28 05:21:20,307 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:21:20,309 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:21:34,169 INFO L? ?]: Removed 1589 outVars from TransFormulas that were not future-live. [2024-11-28 05:21:34,170 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:21:34,244 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:21:34,247 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 05:21:34,248 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:21:34 BoogieIcfgContainer [2024-11-28 05:21:34,248 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:21:34,250 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:21:34,254 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:21:34,260 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:21:34,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:21:17" (1/3) ... [2024-11-28 05:21:34,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28422f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:21:34, skipping insertion in model container [2024-11-28 05:21:34,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:18" (2/3) ... [2024-11-28 05:21:34,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28422f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:21:34, skipping insertion in model container [2024-11-28 05:21:34,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:21:34" (3/3) ... [2024-11-28 05:21:34,266 INFO L128 eAbstractionObserver]: Analyzing ICFG aim-200-1-6-unsat-4.c [2024-11-28 05:21:34,283 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:21:34,287 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aim-200-1-6-unsat-4.c that has 2 procedures, 3175 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-28 05:21:34,472 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:21:34,491 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;@30ba2b7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:21:34,492 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 05:21:34,506 INFO L276 IsEmpty]: Start isEmpty. Operand has 3175 states, 2456 states have (on average 1.525244299674267) internal successors, (3746), 2457 states have internal predecessors, (3746), 716 states have call successors, (716), 1 states have call predecessors, (716), 1 states have return successors, (716), 716 states have call predecessors, (716), 716 states have call successors, (716) [2024-11-28 05:21:34,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4744 [2024-11-28 05:21:34,758 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:21:34,761 INFO L218 NwaCegarLoop]: trace histogram [716, 716, 716, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-11-28 05:21:34,761 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:21:34,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:34,769 INFO L85 PathProgramCache]: Analyzing trace with hash 421791292, now seen corresponding path program 1 times [2024-11-28 05:21:34,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:34,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500629522] [2024-11-28 05:21:34,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:34,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:43,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1023880 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 1022450 trivial. 0 not checked. [2024-11-28 05:21:43,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:43,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500629522] [2024-11-28 05:21:43,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500629522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:21:43,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630949672] [2024-11-28 05:21:43,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:43,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:21:43,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b28ad31-f94b-4774-ab76-4dcc219b15c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:21:43,212 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b28ad31-f94b-4774-ab76-4dcc219b15c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:21:43,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b28ad31-f94b-4774-ab76-4dcc219b15c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:21:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:45,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 9118 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 05:21:45,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:21:45,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1023880 backedges. 1430 proven. 0 refuted. 0 times theorem prover too weak. 1022450 trivial. 0 not checked. [2024-11-28 05:21:45,819 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:21:45,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630949672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:45,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:21:45,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 05:21:45,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982865160] [2024-11-28 05:21:45,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:45,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 05:21:45,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:45,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 05:21:45,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 05:21:45,868 INFO L87 Difference]: Start difference. First operand has 3175 states, 2456 states have (on average 1.525244299674267) internal successors, (3746), 2457 states have internal predecessors, (3746), 716 states have call successors, (716), 1 states have call predecessors, (716), 1 states have return successors, (716), 716 states have call predecessors, (716), 716 states have call successors, (716) Second operand has 2 states, 2 states have (on average 584.0) internal successors, (1168), 2 states have internal predecessors, (1168), 2 states have call successors, (716), 2 states have call predecessors, (716), 1 states have return successors, (716), 1 states have call predecessors, (716), 2 states have call successors, (716) [2024-11-28 05:21:46,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:21:46,146 INFO L93 Difference]: Finished difference Result 6344 states and 11066 transitions. [2024-11-28 05:21:46,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 05:21:46,149 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 584.0) internal successors, (1168), 2 states have internal predecessors, (1168), 2 states have call successors, (716), 2 states have call predecessors, (716), 1 states have return successors, (716), 1 states have call predecessors, (716), 2 states have call successors, (716) Word has length 4743 [2024-11-28 05:21:46,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:21:46,182 INFO L225 Difference]: With dead ends: 6344 [2024-11-28 05:21:46,182 INFO L226 Difference]: Without dead ends: 3172 [2024-11-28 05:21:46,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4744 GetRequests, 4744 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 05:21:46,199 INFO L435 NwaCegarLoop]: 5174 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, 5174 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 05:21:46,200 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5174 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:21:46,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3172 states. [2024-11-28 05:21:47,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3172 to 3172. [2024-11-28 05:21:47,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3172 states, 2454 states have (on average 1.5248573757131214) internal successors, (3742), 2454 states have internal predecessors, (3742), 716 states have call successors, (716), 1 states have call predecessors, (716), 1 states have return successors, (716), 716 states have call predecessors, (716), 716 states have call successors, (716) [2024-11-28 05:21:47,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3172 states to 3172 states and 5174 transitions. [2024-11-28 05:21:47,323 INFO L78 Accepts]: Start accepts. Automaton has 3172 states and 5174 transitions. Word has length 4743 [2024-11-28 05:21:47,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:21:47,327 INFO L471 AbstractCegarLoop]: Abstraction has 3172 states and 5174 transitions. [2024-11-28 05:21:47,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 584.0) internal successors, (1168), 2 states have internal predecessors, (1168), 2 states have call successors, (716), 2 states have call predecessors, (716), 1 states have return successors, (716), 1 states have call predecessors, (716), 2 states have call successors, (716) [2024-11-28 05:21:47,328 INFO L276 IsEmpty]: Start isEmpty. Operand 3172 states and 5174 transitions. [2024-11-28 05:21:47,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4744 [2024-11-28 05:21:47,523 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:21:47,526 INFO L218 NwaCegarLoop]: trace histogram [716, 716, 716, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-11-28 05:21:47,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b28ad31-f94b-4774-ab76-4dcc219b15c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 05:21:47,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b28ad31-f94b-4774-ab76-4dcc219b15c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:21:47,727 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:21:47,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:47,731 INFO L85 PathProgramCache]: Analyzing trace with hash -74466900, now seen corresponding path program 1 times [2024-11-28 05:21:47,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:47,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878748170] [2024-11-28 05:21:47,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:47,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:23:04,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1023880 backedges. 4212 proven. 14877 refuted. 0 times theorem prover too weak. 1004791 trivial. 0 not checked. [2024-11-28 05:23:04,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:23:04,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878748170] [2024-11-28 05:23:04,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878748170] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:23:04,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41477929] [2024-11-28 05:23:04,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:23:04,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:23:04,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b28ad31-f94b-4774-ab76-4dcc219b15c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:23:04,082 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b28ad31-f94b-4774-ab76-4dcc219b15c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:23:04,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b28ad31-f94b-4774-ab76-4dcc219b15c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:23:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:23:06,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 9118 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-28 05:23:06,174 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:23:30,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1023880 backedges. 116904 proven. 12312 refuted. 0 times theorem prover too weak. 894664 trivial. 0 not checked. [2024-11-28 05:23:30,140 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:23:58,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1023880 backedges. 3672 proven. 13320 refuted. 0 times theorem prover too weak. 1006888 trivial. 0 not checked. [2024-11-28 05:23:58,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41477929] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:23:58,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:23:58,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 35 [2024-11-28 05:23:58,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395767368] [2024-11-28 05:23:58,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:23:58,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-28 05:23:58,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:23:58,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-28 05:23:58,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=942, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 05:23:58,787 INFO L87 Difference]: Start difference. First operand 3172 states and 5174 transitions. Second operand has 35 states, 24 states have (on average 118.75) internal successors, (2850), 25 states have internal predecessors, (2850), 32 states have call successors, (1754), 2 states have call predecessors, (1754), 3 states have return successors, (1756), 31 states have call predecessors, (1756), 32 states have call successors, (1756) [2024-11-28 05:24:23,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:23,804 INFO L93 Difference]: Finished difference Result 18098 states and 29456 transitions. [2024-11-28 05:24:23,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-28 05:24:23,808 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 24 states have (on average 118.75) internal successors, (2850), 25 states have internal predecessors, (2850), 32 states have call successors, (1754), 2 states have call predecessors, (1754), 3 states have return successors, (1756), 31 states have call predecessors, (1756), 32 states have call successors, (1756) Word has length 4743 [2024-11-28 05:24:23,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:23,894 INFO L225 Difference]: With dead ends: 18098 [2024-11-28 05:24:23,895 INFO L226 Difference]: Without dead ends: 16178 [2024-11-28 05:24:23,904 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9558 GetRequests, 9483 SyntacticMatches, 8 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1465, Invalid=3227, Unknown=0, NotChecked=0, Total=4692 [2024-11-28 05:24:23,906 INFO L435 NwaCegarLoop]: 10371 mSDtfsCounter, 74925 mSDsluCounter, 70661 mSDsCounter, 0 mSdLazyCounter, 12284 mSolverCounterSat, 5224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74929 SdHoareTripleChecker+Valid, 81032 SdHoareTripleChecker+Invalid, 17508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 5224 IncrementalHoareTripleChecker+Valid, 12284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:23,906 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74929 Valid, 81032 Invalid, 17508 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [5224 Valid, 12284 Invalid, 0 Unknown, 0 Unchecked, 19.4s Time] [2024-11-28 05:24:23,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16178 states. [2024-11-28 05:24:25,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16178 to 8871. [2024-11-28 05:24:25,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8871 states, 7443 states have (on average 1.5566303909713826) internal successors, (11586), 7443 states have internal predecessors, (11586), 1426 states have call successors, (1426), 1 states have call predecessors, (1426), 1 states have return successors, (1426), 1426 states have call predecessors, (1426), 1426 states have call successors, (1426) [2024-11-28 05:24:26,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8871 states to 8871 states and 14438 transitions. [2024-11-28 05:24:26,039 INFO L78 Accepts]: Start accepts. Automaton has 8871 states and 14438 transitions. Word has length 4743 [2024-11-28 05:24:26,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:26,057 INFO L471 AbstractCegarLoop]: Abstraction has 8871 states and 14438 transitions. [2024-11-28 05:24:26,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 24 states have (on average 118.75) internal successors, (2850), 25 states have internal predecessors, (2850), 32 states have call successors, (1754), 2 states have call predecessors, (1754), 3 states have return successors, (1756), 31 states have call predecessors, (1756), 32 states have call successors, (1756) [2024-11-28 05:24:26,063 INFO L276 IsEmpty]: Start isEmpty. Operand 8871 states and 14438 transitions. [2024-11-28 05:24:26,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4745 [2024-11-28 05:24:26,395 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:26,397 INFO L218 NwaCegarLoop]: trace histogram [716, 716, 716, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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05:24:26,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b28ad31-f94b-4774-ab76-4dcc219b15c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 05:24:26,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b28ad31-f94b-4774-ab76-4dcc219b15c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:26,598 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:24:26,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:26,600 INFO L85 PathProgramCache]: Analyzing trace with hash 140216700, now seen corresponding path program 1 times [2024-11-28 05:24:26,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:26,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344982355] [2024-11-28 05:24:26,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:26,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:26:19,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1023880 backedges. 3021 proven. 32628 refuted. 0 times theorem prover too weak. 988231 trivial. 0 not checked. [2024-11-28 05:26:19,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:26:19,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344982355] [2024-11-28 05:26:19,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344982355] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:26:19,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738329991] [2024-11-28 05:26:19,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:26:19,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:19,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b28ad31-f94b-4774-ab76-4dcc219b15c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:26:19,324 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b28ad31-f94b-4774-ab76-4dcc219b15c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:26:19,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b28ad31-f94b-4774-ab76-4dcc219b15c5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:26:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:26:21,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 9121 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-11-28 05:26:21,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:27:31,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1023880 backedges. 285576 proven. 26130 refuted. 0 times theorem prover too weak. 712174 trivial. 0 not checked. [2024-11-28 05:27:31,689 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:28:39,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1023880 backedges. 5244 proven. 32448 refuted. 0 times theorem prover too weak. 986188 trivial. 0 not checked. [2024-11-28 05:28:39,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738329991] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:28:39,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:28:39,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 31, 31] total 88 [2024-11-28 05:28:39,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693901547] [2024-11-28 05:28:39,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:28:40,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-11-28 05:28:40,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:28:40,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-11-28 05:28:40,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=846, Invalid=6810, Unknown=0, NotChecked=0, Total=7656 [2024-11-28 05:28:40,026 INFO L87 Difference]: Start difference. First operand 8871 states and 14438 transitions. Second operand has 88 states, 58 states have (on average 51.55172413793103) internal successors, (2990), 63 states have internal predecessors, (2990), 85 states have call successors, (2072), 2 states have call predecessors, (2072), 3 states have return successors, (2074), 80 states have call predecessors, (2074), 85 states have call successors, (2074)