./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/Haystacks-17.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_7e0f3437-a704-4993-8f01-006617458874/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e0f3437-a704-4993-8f01-006617458874/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_7e0f3437-a704-4993-8f01-006617458874/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e0f3437-a704-4993-8f01-006617458874/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/Haystacks-17.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e0f3437-a704-4993-8f01-006617458874/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_7e0f3437-a704-4993-8f01-006617458874/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 9b64cc6095d5436dfbf5be50f666bc80b5fa4a542b4082c7beb316107bdb1f5d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:07:28,029 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:07:28,104 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e0f3437-a704-4993-8f01-006617458874/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:07:28,114 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:07:28,114 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:07:28,141 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:07:28,142 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:07:28,142 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:07:28,142 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:07:28,143 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:07:28,143 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:07:28,143 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:07:28,143 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:07:28,144 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:07:28,144 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:07:28,144 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:07:28,144 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:07:28,144 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:07:28,145 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:07:28,145 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:07:28,145 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:07:28,145 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:07:28,145 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:07:28,146 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:07:28,146 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:07:28,146 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:07:28,146 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:07:28,146 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:07:28,146 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:07:28,147 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:07:28,147 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:07:28,147 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:07:28,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:07:28,147 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:07:28,147 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:07:28,148 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:07:28,148 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:07:28,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:07:28,148 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:07:28,148 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:07:28,148 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:07:28,148 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:07:28,148 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:07:28,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:07:28,149 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:07:28,149 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:07:28,149 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:07:28,149 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:07:28,149 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_7e0f3437-a704-4993-8f01-006617458874/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 -> 9b64cc6095d5436dfbf5be50f666bc80b5fa4a542b4082c7beb316107bdb1f5d [2024-11-28 04:07:28,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:07:28,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:07:28,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:07:28,524 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:07:28,524 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:07:28,527 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e0f3437-a704-4993-8f01-006617458874/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/xcsp/Haystacks-17.c [2024-11-28 04:07:31,788 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e0f3437-a704-4993-8f01-006617458874/bin/uautomizer-verify-aQ6SnzHsRB/data/92673cce8/dad67e46814846c8a2db318ec07c3521/FLAG1cd1807e6 [2024-11-28 04:07:32,460 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:07:32,461 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e0f3437-a704-4993-8f01-006617458874/sv-benchmarks/c/xcsp/Haystacks-17.c [2024-11-28 04:07:32,482 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e0f3437-a704-4993-8f01-006617458874/bin/uautomizer-verify-aQ6SnzHsRB/data/92673cce8/dad67e46814846c8a2db318ec07c3521/FLAG1cd1807e6 [2024-11-28 04:07:32,505 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e0f3437-a704-4993-8f01-006617458874/bin/uautomizer-verify-aQ6SnzHsRB/data/92673cce8/dad67e46814846c8a2db318ec07c3521 [2024-11-28 04:07:32,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:07:32,509 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:07:32,511 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:07:32,512 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:07:32,517 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:07:32,518 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:07:32" (1/1) ... [2024-11-28 04:07:32,522 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a00dd9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:32, skipping insertion in model container [2024-11-28 04:07:32,522 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:07:32" (1/1) ... [2024-11-28 04:07:32,620 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:07:33,323 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_7e0f3437-a704-4993-8f01-006617458874/sv-benchmarks/c/xcsp/Haystacks-17.c[124976,124989] [2024-11-28 04:07:33,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:07:33,414 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:07:33,686 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_7e0f3437-a704-4993-8f01-006617458874/sv-benchmarks/c/xcsp/Haystacks-17.c[124976,124989] [2024-11-28 04:07:33,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:07:33,718 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:07:33,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:33 WrapperNode [2024-11-28 04:07:33,719 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:07:33,721 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:07:33,722 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:07:33,722 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:07:33,732 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:33" (1/1) ... [2024-11-28 04:07:33,809 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:33" (1/1) ... [2024-11-28 04:07:34,122 INFO L138 Inliner]: procedures = 13, calls = 3169, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 4623 [2024-11-28 04:07:34,123 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:07:34,124 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:07:34,124 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:07:34,124 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:07:34,136 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:33" (1/1) ... [2024-11-28 04:07:34,136 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:33" (1/1) ... [2024-11-28 04:07:34,165 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:33" (1/1) ... [2024-11-28 04:07:34,231 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 04:07:34,231 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:33" (1/1) ... [2024-11-28 04:07:34,232 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:33" (1/1) ... [2024-11-28 04:07:34,360 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:33" (1/1) ... [2024-11-28 04:07:34,377 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:33" (1/1) ... [2024-11-28 04:07:34,387 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:33" (1/1) ... [2024-11-28 04:07:34,407 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:33" (1/1) ... [2024-11-28 04:07:34,421 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:33" (1/1) ... [2024-11-28 04:07:34,461 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:07:34,464 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:07:34,465 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:07:34,466 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:07:34,467 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:33" (1/1) ... [2024-11-28 04:07:34,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:07:34,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e0f3437-a704-4993-8f01-006617458874/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:07:34,503 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e0f3437-a704-4993-8f01-006617458874/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:07:34,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e0f3437-a704-4993-8f01-006617458874/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:07:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:07:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:07:34,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:07:34,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:07:34,538 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2024-11-28 04:07:34,538 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2024-11-28 04:07:34,823 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:07:34,826 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:07:54,672 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-11-28 04:07:54,672 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:07:54,773 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:07:54,776 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 04:07:54,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:07:54 BoogieIcfgContainer [2024-11-28 04:07:54,777 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:07:54,780 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:07:54,780 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:07:54,785 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:07:54,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:07:32" (1/3) ... [2024-11-28 04:07:54,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a796401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:07:54, skipping insertion in model container [2024-11-28 04:07:54,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:33" (2/3) ... [2024-11-28 04:07:54,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a796401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:07:54, skipping insertion in model container [2024-11-28 04:07:54,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:07:54" (3/3) ... [2024-11-28 04:07:54,790 INFO L128 eAbstractionObserver]: Analyzing ICFG Haystacks-17.c [2024-11-28 04:07:54,807 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:07:54,810 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Haystacks-17.c that has 2 procedures, 3462 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-28 04:07:55,016 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:07:55,033 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;@51df1b76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:07:55,033 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:07:55,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 3462 states, 297 states have (on average 1.0067340067340067) internal successors, (299), 298 states have internal predecessors, (299), 3162 states have call successors, (3162), 1 states have call predecessors, (3162), 1 states have return successors, (3162), 3162 states have call predecessors, (3162), 3162 states have call successors, (3162) [2024-11-28 04:07:57,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16103 [2024-11-28 04:07:57,052 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:57,055 INFO L218 NwaCegarLoop]: trace histogram [3162, 3162, 3162, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-11-28 04:07:57,056 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:57,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:57,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1190058368, now seen corresponding path program 1 times [2024-11-28 04:07:57,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:57,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982372678] [2024-11-28 04:07:57,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:57,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:33,457 INFO L134 CoverageAnalysis]: Checked inductivity of 19990164 backedges. 0 proven. 6322 refuted. 0 times theorem prover too weak. 19983842 trivial. 0 not checked. [2024-11-28 04:08:33,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:33,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982372678] [2024-11-28 04:08:33,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982372678] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:08:33,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187892817] [2024-11-28 04:08:33,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:33,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:33,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e0f3437-a704-4993-8f01-006617458874/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:33,469 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e0f3437-a704-4993-8f01-006617458874/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:08:33,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e0f3437-a704-4993-8f01-006617458874/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:08:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:39,498 INFO L256 TraceCheckSpWp]: Trace formula consists of 29062 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 04:08:39,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:08:41,250 INFO L134 CoverageAnalysis]: Checked inductivity of 19990164 backedges. 6322 proven. 0 refuted. 0 times theorem prover too weak. 19983842 trivial. 0 not checked. [2024-11-28 04:08:41,250 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:08:41,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187892817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:08:41,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:08:41,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 04:08:41,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790861835] [2024-11-28 04:08:41,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:08:41,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:08:41,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:41,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:08:41,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:08:41,333 INFO L87 Difference]: Start difference. First operand has 3462 states, 297 states have (on average 1.0067340067340067) internal successors, (299), 298 states have internal predecessors, (299), 3162 states have call successors, (3162), 1 states have call predecessors, (3162), 1 states have return successors, (3162), 3162 states have call predecessors, (3162), 3162 states have call successors, (3162) Second operand has 2 states, 2 states have (on average 148.5) internal successors, (297), 2 states have internal predecessors, (297), 2 states have call successors, (3162), 2 states have call predecessors, (3162), 1 states have return successors, (3162), 1 states have call predecessors, (3162), 2 states have call successors, (3162) [2024-11-28 04:08:41,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:41,819 INFO L93 Difference]: Finished difference Result 6918 states and 16402 transitions. [2024-11-28 04:08:41,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:08:41,834 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 148.5) internal successors, (297), 2 states have internal predecessors, (297), 2 states have call successors, (3162), 2 states have call predecessors, (3162), 1 states have return successors, (3162), 1 states have call predecessors, (3162), 2 states have call successors, (3162) Word has length 16102 [2024-11-28 04:08:41,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:41,911 INFO L225 Difference]: With dead ends: 6918 [2024-11-28 04:08:41,912 INFO L226 Difference]: Without dead ends: 3459 [2024-11-28 04:08:41,965 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16103 GetRequests, 16103 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 04:08:41,968 INFO L435 NwaCegarLoop]: 6619 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, 6619 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 04:08:41,971 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6619 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:08:41,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3459 states. [2024-11-28 04:08:47,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3459 to 3459. [2024-11-28 04:08:47,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3459 states, 295 states have (on average 1.0) internal successors, (295), 295 states have internal predecessors, (295), 3162 states have call successors, (3162), 1 states have call predecessors, (3162), 1 states have return successors, (3162), 3162 states have call predecessors, (3162), 3162 states have call successors, (3162) [2024-11-28 04:08:47,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3459 states to 3459 states and 6619 transitions. [2024-11-28 04:08:47,381 INFO L78 Accepts]: Start accepts. Automaton has 3459 states and 6619 transitions. Word has length 16102 [2024-11-28 04:08:47,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:47,386 INFO L471 AbstractCegarLoop]: Abstraction has 3459 states and 6619 transitions. [2024-11-28 04:08:47,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 148.5) internal successors, (297), 2 states have internal predecessors, (297), 2 states have call successors, (3162), 2 states have call predecessors, (3162), 1 states have return successors, (3162), 1 states have call predecessors, (3162), 2 states have call successors, (3162) [2024-11-28 04:08:47,390 INFO L276 IsEmpty]: Start isEmpty. Operand 3459 states and 6619 transitions. [2024-11-28 04:08:48,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16103 [2024-11-28 04:08:48,952 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:48,957 INFO L218 NwaCegarLoop]: trace histogram [3162, 3162, 3162, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-11-28 04:08:49,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e0f3437-a704-4993-8f01-006617458874/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:08:49,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e0f3437-a704-4993-8f01-006617458874/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 04:08:49,158 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:49,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:49,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1019730880, now seen corresponding path program 1 times [2024-11-28 04:08:49,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:49,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843321294] [2024-11-28 04:08:49,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:49,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:13:02,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [527213560] [2024-11-28 04:13:02,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:02,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:02,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e0f3437-a704-4993-8f01-006617458874/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:13:02,315 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e0f3437-a704-4993-8f01-006617458874/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:13:02,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e0f3437-a704-4993-8f01-006617458874/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process