./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/aim-200-2-0-sat-2.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_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/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_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/aim-200-2-0-sat-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/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_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/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 910d0d4a904a06e68dee590f9d6ecfde810a88dd5d3d7b91786246b920d30aca --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:20:31,596 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:20:31,682 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 05:20:31,688 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:20:31,689 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:20:31,719 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:20:31,721 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:20:31,721 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:20:31,722 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:20:31,722 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:20:31,722 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:20:31,722 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:20:31,722 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:20:31,722 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:20:31,723 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:20:31,723 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:20:31,723 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:20:31,723 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:20:31,723 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:20:31,723 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:20:31,723 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:20:31,723 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:20:31,724 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:20:31,724 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:20:31,724 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:20:31,724 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:20:31,724 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:20:31,724 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:20:31,724 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:20:31,724 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:20:31,725 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:20:31,726 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:20:31,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:20:31,726 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:20:31,727 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:20:31,727 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:20:31,727 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:20:31,727 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:20:31,727 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:20:31,727 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:20:31,727 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:20:31,727 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:20:31,727 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:20:31,728 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:20:31,728 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:20:31,728 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:20:31,728 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:20:31,728 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:20:31,728 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_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/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 -> 910d0d4a904a06e68dee590f9d6ecfde810a88dd5d3d7b91786246b920d30aca [2024-11-28 05:20:32,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:20:32,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:20:32,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:20:32,081 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:20:32,081 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:20:32,084 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/xcsp/aim-200-2-0-sat-2.c [2024-11-28 05:20:35,102 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/bin/uautomizer-verify-aQ6SnzHsRB/data/a95901837/0db1e56442e04ebc9b72764501130e23/FLAGeed8b9c0f [2024-11-28 05:20:35,556 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:20:35,560 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/sv-benchmarks/c/xcsp/aim-200-2-0-sat-2.c [2024-11-28 05:20:35,585 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/bin/uautomizer-verify-aQ6SnzHsRB/data/a95901837/0db1e56442e04ebc9b72764501130e23/FLAGeed8b9c0f [2024-11-28 05:20:35,612 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/bin/uautomizer-verify-aQ6SnzHsRB/data/a95901837/0db1e56442e04ebc9b72764501130e23 [2024-11-28 05:20:35,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:20:35,617 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:20:35,619 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:20:35,620 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:20:35,626 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:20:35,627 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:20:35" (1/1) ... [2024-11-28 05:20:35,628 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@466f7ab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:35, skipping insertion in model container [2024-11-28 05:20:35,630 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:20:35" (1/1) ... [2024-11-28 05:20:35,673 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:20:36,269 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_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/sv-benchmarks/c/xcsp/aim-200-2-0-sat-2.c[42791,42804] [2024-11-28 05:20:36,321 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:20:36,335 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:20:36,624 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_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/sv-benchmarks/c/xcsp/aim-200-2-0-sat-2.c[42791,42804] [2024-11-28 05:20:36,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:20:36,655 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:20:36,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:36 WrapperNode [2024-11-28 05:20:36,656 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:20:36,658 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:20:36,658 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:20:36,658 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:20:36,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:36" (1/1) ... [2024-11-28 05:20:36,751 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:36" (1/1) ... [2024-11-28 05:20:37,238 INFO L138 Inliner]: procedures = 13, calls = 789, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 8310 [2024-11-28 05:20:37,239 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:20:37,240 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:20:37,241 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:20:37,241 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:20:37,251 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:36" (1/1) ... [2024-11-28 05:20:37,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:36" (1/1) ... [2024-11-28 05:20:37,344 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:36" (1/1) ... [2024-11-28 05:20:37,504 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 05:20:37,505 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:36" (1/1) ... [2024-11-28 05:20:37,505 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:36" (1/1) ... [2024-11-28 05:20:37,701 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:36" (1/1) ... [2024-11-28 05:20:37,716 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:36" (1/1) ... [2024-11-28 05:20:37,791 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:36" (1/1) ... [2024-11-28 05:20:37,830 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:36" (1/1) ... [2024-11-28 05:20:37,860 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:36" (1/1) ... [2024-11-28 05:20:37,947 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:20:37,949 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:20:37,949 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:20:37,949 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:20:37,952 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:36" (1/1) ... [2024-11-28 05:20:37,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:20:37,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:20:37,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:20:38,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:20:38,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:20:38,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:20:38,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:20:38,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:20:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2024-11-28 05:20:38,034 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2024-11-28 05:20:38,410 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:20:38,412 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:20:55,906 INFO L? ?]: Removed 1901 outVars from TransFormulas that were not future-live. [2024-11-28 05:20:55,906 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:20:56,005 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:20:56,006 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 05:20:56,006 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:20:56 BoogieIcfgContainer [2024-11-28 05:20:56,007 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:20:56,012 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:20:56,012 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:20:56,020 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:20:56,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:20:35" (1/3) ... [2024-11-28 05:20:56,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@547541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:20:56, skipping insertion in model container [2024-11-28 05:20:56,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:36" (2/3) ... [2024-11-28 05:20:56,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@547541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:20:56, skipping insertion in model container [2024-11-28 05:20:56,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:20:56" (3/3) ... [2024-11-28 05:20:56,028 INFO L128 eAbstractionObserver]: Analyzing ICFG aim-200-2-0-sat-2.c [2024-11-28 05:20:56,049 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:20:56,054 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aim-200-2-0-sat-2.c that has 2 procedures, 3817 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-28 05:20:56,298 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:20:56,318 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;@6044b342, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:20:56,321 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 05:20:56,345 INFO L276 IsEmpty]: Start isEmpty. Operand has 3817 states, 3032 states have (on average 1.537598944591029) internal successors, (4662), 3033 states have internal predecessors, (4662), 782 states have call successors, (782), 1 states have call predecessors, (782), 1 states have return successors, (782), 782 states have call predecessors, (782), 782 states have call successors, (782) [2024-11-28 05:20:56,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5310 [2024-11-28 05:20:56,718 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:20:56,722 INFO L218 NwaCegarLoop]: trace histogram [782, 782, 782, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:20:56,723 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:20:56,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:56,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1305856016, now seen corresponding path program 1 times [2024-11-28 05:20:56,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:56,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989895834] [2024-11-28 05:20:56,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:56,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:04,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1221484 backedges. 0 proven. 1562 refuted. 0 times theorem prover too weak. 1219922 trivial. 0 not checked. [2024-11-28 05:21:04,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:04,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989895834] [2024-11-28 05:21:04,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989895834] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:21:04,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966552715] [2024-11-28 05:21:04,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:04,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:21:04,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:21:04,431 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:21:04,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:21:06,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:06,695 INFO L256 TraceCheckSpWp]: Trace formula consists of 10288 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 05:21:06,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:21:07,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1221484 backedges. 1562 proven. 0 refuted. 0 times theorem prover too weak. 1219922 trivial. 0 not checked. [2024-11-28 05:21:07,477 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:21:07,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966552715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:07,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:21:07,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 05:21:07,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38984686] [2024-11-28 05:21:07,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:07,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 05:21:07,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:07,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 05:21:07,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 05:21:07,544 INFO L87 Difference]: Start difference. First operand has 3817 states, 3032 states have (on average 1.537598944591029) internal successors, (4662), 3033 states have internal predecessors, (4662), 782 states have call successors, (782), 1 states have call predecessors, (782), 1 states have return successors, (782), 782 states have call predecessors, (782), 782 states have call successors, (782) Second operand has 2 states, 2 states have (on average 702.0) internal successors, (1404), 2 states have internal predecessors, (1404), 2 states have call successors, (782), 2 states have call predecessors, (782), 1 states have return successors, (782), 1 states have call predecessors, (782), 2 states have call successors, (782) [2024-11-28 05:21:07,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:21:07,951 INFO L93 Difference]: Finished difference Result 7628 states and 13228 transitions. [2024-11-28 05:21:07,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 05:21:07,955 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 702.0) internal successors, (1404), 2 states have internal predecessors, (1404), 2 states have call successors, (782), 2 states have call predecessors, (782), 1 states have return successors, (782), 1 states have call predecessors, (782), 2 states have call successors, (782) Word has length 5309 [2024-11-28 05:21:07,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:21:08,001 INFO L225 Difference]: With dead ends: 7628 [2024-11-28 05:21:08,003 INFO L226 Difference]: Without dead ends: 3814 [2024-11-28 05:21:08,028 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5310 GetRequests, 5310 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 05:21:08,033 INFO L435 NwaCegarLoop]: 6222 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, 6222 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 05:21:08,034 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6222 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:21:08,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3814 states. [2024-11-28 05:21:08,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3814 to 3814. [2024-11-28 05:21:08,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3814 states, 3030 states have (on average 1.5372937293729374) internal successors, (4658), 3030 states have internal predecessors, (4658), 782 states have call successors, (782), 1 states have call predecessors, (782), 1 states have return successors, (782), 782 states have call predecessors, (782), 782 states have call successors, (782) [2024-11-28 05:21:08,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3814 states to 3814 states and 6222 transitions. [2024-11-28 05:21:08,770 INFO L78 Accepts]: Start accepts. Automaton has 3814 states and 6222 transitions. Word has length 5309 [2024-11-28 05:21:08,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:21:08,773 INFO L471 AbstractCegarLoop]: Abstraction has 3814 states and 6222 transitions. [2024-11-28 05:21:08,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 702.0) internal successors, (1404), 2 states have internal predecessors, (1404), 2 states have call successors, (782), 2 states have call predecessors, (782), 1 states have return successors, (782), 1 states have call predecessors, (782), 2 states have call successors, (782) [2024-11-28 05:21:08,774 INFO L276 IsEmpty]: Start isEmpty. Operand 3814 states and 6222 transitions. [2024-11-28 05:21:09,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5310 [2024-11-28 05:21:09,015 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:21:09,016 INFO L218 NwaCegarLoop]: trace histogram [782, 782, 782, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:21:09,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 05:21:09,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:21:09,218 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:21:09,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:09,222 INFO L85 PathProgramCache]: Analyzing trace with hash 587033420, now seen corresponding path program 1 times [2024-11-28 05:21:09,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:09,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143380295] [2024-11-28 05:21:09,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:09,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:22:58,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1221484 backedges. 2100 proven. 16476 refuted. 0 times theorem prover too weak. 1202908 trivial. 0 not checked. [2024-11-28 05:22:58,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:22:58,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143380295] [2024-11-28 05:22:58,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143380295] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:22:58,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28271629] [2024-11-28 05:22:58,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:22:58,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:22:58,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:22:58,092 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:22:58,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:23:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:23:00,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 10288 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-28 05:23:00,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:24:03,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1221484 backedges. 66648 proven. 25728 refuted. 0 times theorem prover too weak. 1129108 trivial. 0 not checked. [2024-11-28 05:24:03,293 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:25:28,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1221484 backedges. 5688 proven. 26568 refuted. 0 times theorem prover too weak. 1189228 trivial. 0 not checked. [2024-11-28 05:25:28,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28271629] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:25:28,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:25:28,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 25, 25] total 58 [2024-11-28 05:25:28,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535029500] [2024-11-28 05:25:28,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:25:28,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-28 05:25:28,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:25:28,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-28 05:25:28,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=517, Invalid=2789, Unknown=0, NotChecked=0, Total=3306 [2024-11-28 05:25:28,639 INFO L87 Difference]: Start difference. First operand 3814 states and 6222 transitions. Second operand has 58 states, 39 states have (on average 101.23076923076923) internal successors, (3948), 41 states have internal predecessors, (3948), 53 states have call successors, (2189), 2 states have call predecessors, (2189), 3 states have return successors, (2191), 51 states have call predecessors, (2191), 53 states have call successors, (2191) [2024-11-28 05:27:43,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:27:43,660 INFO L93 Difference]: Finished difference Result 75022 states and 122197 transitions. [2024-11-28 05:27:43,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 269 states. [2024-11-28 05:27:43,667 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 39 states have (on average 101.23076923076923) internal successors, (3948), 41 states have internal predecessors, (3948), 53 states have call successors, (2189), 2 states have call predecessors, (2189), 3 states have return successors, (2191), 51 states have call predecessors, (2191), 53 states have call successors, (2191) Word has length 5309 [2024-11-28 05:27:43,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:27:43,971 INFO L225 Difference]: With dead ends: 75022 [2024-11-28 05:27:43,971 INFO L226 Difference]: Without dead ends: 73148 [2024-11-28 05:27:44,015 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10913 GetRequests, 10591 SyntacticMatches, 8 SemanticMatches, 314 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38544 ImplicationChecksByTransitivity, 36.2s TimeCoverageRelationStatistics Valid=22058, Invalid=77482, Unknown=0, NotChecked=0, Total=99540 [2024-11-28 05:27:44,017 INFO L435 NwaCegarLoop]: 21152 mSDtfsCounter, 251940 mSDsluCounter, 296660 mSDsCounter, 0 mSdLazyCounter, 50584 mSolverCounterSat, 20016 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252017 SdHoareTripleChecker+Valid, 317812 SdHoareTripleChecker+Invalid, 70600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.2s SdHoareTripleChecker+Time, 20016 IncrementalHoareTripleChecker+Valid, 50584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:27:44,017 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [252017 Valid, 317812 Invalid, 70600 Unknown, 0 Unchecked, 1.2s Time], IncrementalHoareTripleChecker [20016 Valid, 50584 Invalid, 0 Unknown, 0 Unchecked, 67.4s Time] [2024-11-28 05:27:44,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73148 states. [2024-11-28 05:27:53,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73148 to 35290. [2024-11-28 05:27:53,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35290 states, 30679 states have (on average 1.5714006323543792) internal successors, (48209), 30679 states have internal predecessors, (48209), 4609 states have call successors, (4609), 1 states have call predecessors, (4609), 1 states have return successors, (4609), 4609 states have call predecessors, (4609), 4609 states have call successors, (4609) [2024-11-28 05:27:53,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35290 states to 35290 states and 57427 transitions. [2024-11-28 05:27:53,945 INFO L78 Accepts]: Start accepts. Automaton has 35290 states and 57427 transitions. Word has length 5309 [2024-11-28 05:27:53,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:27:53,969 INFO L471 AbstractCegarLoop]: Abstraction has 35290 states and 57427 transitions. [2024-11-28 05:27:53,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 39 states have (on average 101.23076923076923) internal successors, (3948), 41 states have internal predecessors, (3948), 53 states have call successors, (2189), 2 states have call predecessors, (2189), 3 states have return successors, (2191), 51 states have call predecessors, (2191), 53 states have call successors, (2191) [2024-11-28 05:27:53,979 INFO L276 IsEmpty]: Start isEmpty. Operand 35290 states and 57427 transitions. [2024-11-28 05:27:54,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5312 [2024-11-28 05:27:54,727 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:27:54,729 INFO L218 NwaCegarLoop]: trace histogram [782, 782, 782, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-11-28 05:27:54,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 05:27:54,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:27:54,935 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:27:54,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:27:54,943 INFO L85 PathProgramCache]: Analyzing trace with hash 167653204, now seen corresponding path program 1 times [2024-11-28 05:27:54,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:27:54,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153003667] [2024-11-28 05:27:54,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:27:54,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:28:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:30:43,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1221484 backedges. 4680 proven. 23040 refuted. 0 times theorem prover too weak. 1193764 trivial. 0 not checked. [2024-11-28 05:30:43,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:30:43,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153003667] [2024-11-28 05:30:43,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153003667] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:30:43,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4825671] [2024-11-28 05:30:43,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:30:43,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:30:43,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:30:43,895 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:30:43,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e4e2611-dc63-4ebf-8869-6c3358f5fff5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:30:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:30:46,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 10294 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-28 05:30:46,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:31:09,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1221484 backedges. 48912 proven. 10806 refuted. 0 times theorem prover too weak. 1161766 trivial. 0 not checked. [2024-11-28 05:31:09,663 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:31:26,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1221484 backedges. 2892 proven. 11076 refuted. 0 times theorem prover too weak. 1207516 trivial. 0 not checked. [2024-11-28 05:31:26,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4825671] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:31:26,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:31:26,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 14, 14] total 42 [2024-11-28 05:31:26,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645130625] [2024-11-28 05:31:26,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:31:26,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-28 05:31:26,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:31:26,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-28 05:31:26,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1475, Unknown=0, NotChecked=0, Total=1722 [2024-11-28 05:31:26,590 INFO L87 Difference]: Start difference. First operand 35290 states and 57427 transitions. Second operand has 42 states, 30 states have (on average 120.86666666666666) internal successors, (3626), 31 states have internal predecessors, (3626), 39 states have call successors, (2047), 2 states have call predecessors, (2047), 3 states have return successors, (2049), 38 states have call predecessors, (2049), 39 states have call successors, (2049)