./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem10_label01.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_ebc98865-cb65-4813-a356-bbe3ac7b3ccd/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc98865-cb65-4813-a356-bbe3ac7b3ccd/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_ebc98865-cb65-4813-a356-bbe3ac7b3ccd/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc98865-cb65-4813-a356-bbe3ac7b3ccd/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem10_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc98865-cb65-4813-a356-bbe3ac7b3ccd/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_ebc98865-cb65-4813-a356-bbe3ac7b3ccd/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 25a329399ac3f0c42bfd0b3752cc2a04cb2662736babf7dc26be2e3a4966221c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:45:13,288 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:45:13,392 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc98865-cb65-4813-a356-bbe3ac7b3ccd/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:45:13,398 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:45:13,399 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:45:13,424 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:45:13,425 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:45:13,425 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:45:13,426 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:45:13,426 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:45:13,426 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:45:13,426 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:45:13,427 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:45:13,427 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:45:13,428 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:45:13,428 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:45:13,428 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:45:13,428 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:45:13,428 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:45:13,429 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:45:13,429 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:45:13,429 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:45:13,429 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:45:13,429 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:45:13,429 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:45:13,430 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:45:13,430 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:45:13,430 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:45:13,430 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:45:13,430 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:45:13,430 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:45:13,430 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:45:13,430 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:45:13,430 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:45:13,431 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:45:13,431 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:45:13,431 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:45:13,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:45:13,431 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:45:13,431 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:45:13,431 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:45:13,431 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:45:13,432 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:45:13,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:45:13,432 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:45:13,432 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:45:13,433 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:45:13,433 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:45:13,433 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_ebc98865-cb65-4813-a356-bbe3ac7b3ccd/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 -> 25a329399ac3f0c42bfd0b3752cc2a04cb2662736babf7dc26be2e3a4966221c [2024-11-28 02:45:13,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:45:13,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:45:13,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:45:13,817 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:45:13,818 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:45:13,819 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc98865-cb65-4813-a356-bbe3ac7b3ccd/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/eca-rers2012/Problem10_label01.c [2024-11-28 02:45:17,169 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc98865-cb65-4813-a356-bbe3ac7b3ccd/bin/uautomizer-verify-aQ6SnzHsRB/data/97af10047/6445431165834224aef052b4721b7fb5/FLAGfbe7d34a3 [2024-11-28 02:45:17,574 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:45:17,575 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc98865-cb65-4813-a356-bbe3ac7b3ccd/sv-benchmarks/c/eca-rers2012/Problem10_label01.c [2024-11-28 02:45:17,589 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc98865-cb65-4813-a356-bbe3ac7b3ccd/bin/uautomizer-verify-aQ6SnzHsRB/data/97af10047/6445431165834224aef052b4721b7fb5/FLAGfbe7d34a3 [2024-11-28 02:45:17,608 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc98865-cb65-4813-a356-bbe3ac7b3ccd/bin/uautomizer-verify-aQ6SnzHsRB/data/97af10047/6445431165834224aef052b4721b7fb5 [2024-11-28 02:45:17,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:45:17,613 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:45:17,614 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:45:17,615 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:45:17,620 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:45:17,621 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:45:17" (1/1) ... [2024-11-28 02:45:17,622 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20036375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:17, skipping insertion in model container [2024-11-28 02:45:17,623 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:45:17" (1/1) ... [2024-11-28 02:45:17,672 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:45:17,910 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_ebc98865-cb65-4813-a356-bbe3ac7b3ccd/sv-benchmarks/c/eca-rers2012/Problem10_label01.c[6098,6111] [2024-11-28 02:45:18,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:45:18,160 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:45:18,210 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_ebc98865-cb65-4813-a356-bbe3ac7b3ccd/sv-benchmarks/c/eca-rers2012/Problem10_label01.c[6098,6111] [2024-11-28 02:45:18,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:45:18,393 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:45:18,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:18 WrapperNode [2024-11-28 02:45:18,397 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:45:18,398 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:45:18,398 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:45:18,398 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:45:18,410 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:18" (1/1) ... [2024-11-28 02:45:18,442 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:18" (1/1) ... [2024-11-28 02:45:18,548 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 597 [2024-11-28 02:45:18,549 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:45:18,550 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:45:18,550 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:45:18,550 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:45:18,564 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:18" (1/1) ... [2024-11-28 02:45:18,564 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:18" (1/1) ... [2024-11-28 02:45:18,570 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:18" (1/1) ... [2024-11-28 02:45:18,600 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 02:45:18,600 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:18" (1/1) ... [2024-11-28 02:45:18,600 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:18" (1/1) ... [2024-11-28 02:45:18,625 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:18" (1/1) ... [2024-11-28 02:45:18,627 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:18" (1/1) ... [2024-11-28 02:45:18,635 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:18" (1/1) ... [2024-11-28 02:45:18,646 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:18" (1/1) ... [2024-11-28 02:45:18,655 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:18" (1/1) ... [2024-11-28 02:45:18,666 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:45:18,668 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:45:18,669 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:45:18,669 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:45:18,671 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:18" (1/1) ... [2024-11-28 02:45:18,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:45:18,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc98865-cb65-4813-a356-bbe3ac7b3ccd/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:45:18,713 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc98865-cb65-4813-a356-bbe3ac7b3ccd/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:45:18,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc98865-cb65-4813-a356-bbe3ac7b3ccd/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:45:18,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:45:18,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:45:18,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:45:18,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:45:18,852 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:45:18,855 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:45:20,606 INFO L? ?]: Removed 84 outVars from TransFormulas that were not future-live. [2024-11-28 02:45:20,607 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:45:20,631 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:45:20,634 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:45:20,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:45:20 BoogieIcfgContainer [2024-11-28 02:45:20,635 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:45:20,638 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:45:20,638 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:45:20,646 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:45:20,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:45:17" (1/3) ... [2024-11-28 02:45:20,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35cb7ac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:45:20, skipping insertion in model container [2024-11-28 02:45:20,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:45:18" (2/3) ... [2024-11-28 02:45:20,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35cb7ac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:45:20, skipping insertion in model container [2024-11-28 02:45:20,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:45:20" (3/3) ... [2024-11-28 02:45:20,652 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem10_label01.c [2024-11-28 02:45:20,670 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:45:20,672 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem10_label01.c that has 1 procedures, 206 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:45:20,772 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:45:20,792 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;@7f1bfddb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:45:20,792 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:45:20,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 204 states have (on average 1.6862745098039216) internal successors, (344), 205 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:20,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-28 02:45:20,809 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:20,810 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:20,811 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:20,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:20,818 INFO L85 PathProgramCache]: Analyzing trace with hash -92557335, now seen corresponding path program 1 times [2024-11-28 02:45:20,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:20,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549787941] [2024-11-28 02:45:20,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:20,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:21,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:45:21,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:21,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549787941] [2024-11-28 02:45:21,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549787941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:21,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:45:21,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:45:21,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101168356] [2024-11-28 02:45:21,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:21,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:45:21,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:21,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:45:21,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:45:21,751 INFO L87 Difference]: Start difference. First operand has 206 states, 204 states have (on average 1.6862745098039216) internal successors, (344), 205 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:23,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:23,753 INFO L93 Difference]: Finished difference Result 696 states and 1248 transitions. [2024-11-28 02:45:23,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:45:23,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-28 02:45:23,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:23,768 INFO L225 Difference]: With dead ends: 696 [2024-11-28 02:45:23,769 INFO L226 Difference]: Without dead ends: 421 [2024-11-28 02:45:23,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:45:23,776 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 465 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:23,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 44 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-28 02:45:23,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-11-28 02:45:23,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2024-11-28 02:45:23,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 420 states have (on average 1.3833333333333333) internal successors, (581), 420 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:23,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 581 transitions. [2024-11-28 02:45:23,873 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 581 transitions. Word has length 53 [2024-11-28 02:45:23,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:23,877 INFO L471 AbstractCegarLoop]: Abstraction has 421 states and 581 transitions. [2024-11-28 02:45:23,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:23,878 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 581 transitions. [2024-11-28 02:45:23,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2024-11-28 02:45:23,892 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:23,892 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:23,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:45:23,893 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:23,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:23,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1991031425, now seen corresponding path program 1 times [2024-11-28 02:45:23,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:23,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795840276] [2024-11-28 02:45:23,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:23,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:24,668 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-28 02:45:24,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:24,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795840276] [2024-11-28 02:45:24,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795840276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:24,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:45:24,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:45:24,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817711512] [2024-11-28 02:45:24,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:24,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:45:24,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:24,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:45:24,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:45:24,678 INFO L87 Difference]: Start difference. First operand 421 states and 581 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:25,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:25,477 INFO L93 Difference]: Finished difference Result 979 states and 1440 transitions. [2024-11-28 02:45:25,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:45:25,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 234 [2024-11-28 02:45:25,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:25,487 INFO L225 Difference]: With dead ends: 979 [2024-11-28 02:45:25,487 INFO L226 Difference]: Without dead ends: 699 [2024-11-28 02:45:25,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:45:25,489 INFO L435 NwaCegarLoop]: 221 mSDtfsCounter, 89 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:25,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 226 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 02:45:25,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2024-11-28 02:45:25,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 560. [2024-11-28 02:45:25,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 559 states have (on average 1.3148479427549196) internal successors, (735), 559 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:25,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 735 transitions. [2024-11-28 02:45:25,555 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 735 transitions. Word has length 234 [2024-11-28 02:45:25,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:25,557 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 735 transitions. [2024-11-28 02:45:25,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:25,557 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 735 transitions. [2024-11-28 02:45:25,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-28 02:45:25,562 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:25,563 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:25,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:45:25,563 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:25,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:25,564 INFO L85 PathProgramCache]: Analyzing trace with hash -218435280, now seen corresponding path program 1 times [2024-11-28 02:45:25,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:25,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567691228] [2024-11-28 02:45:25,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:25,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:26,088 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-28 02:45:26,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:26,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567691228] [2024-11-28 02:45:26,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567691228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:26,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:45:26,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:45:26,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492561484] [2024-11-28 02:45:26,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:26,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:45:26,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:26,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:45:26,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:45:26,094 INFO L87 Difference]: Start difference. First operand 560 states and 735 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:26,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:26,869 INFO L93 Difference]: Finished difference Result 1118 states and 1533 transitions. [2024-11-28 02:45:26,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:45:26,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 240 [2024-11-28 02:45:26,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:26,877 INFO L225 Difference]: With dead ends: 1118 [2024-11-28 02:45:26,877 INFO L226 Difference]: Without dead ends: 699 [2024-11-28 02:45:26,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:45:26,881 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 55 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:26,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 34 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:45:26,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2024-11-28 02:45:26,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 699. [2024-11-28 02:45:26,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 698 states have (on average 1.2808022922636104) internal successors, (894), 698 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:26,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 894 transitions. [2024-11-28 02:45:26,919 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 894 transitions. Word has length 240 [2024-11-28 02:45:26,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:26,919 INFO L471 AbstractCegarLoop]: Abstraction has 699 states and 894 transitions. [2024-11-28 02:45:26,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:26,920 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 894 transitions. [2024-11-28 02:45:26,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-11-28 02:45:26,926 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:26,927 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:26,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:45:26,928 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:26,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:26,928 INFO L85 PathProgramCache]: Analyzing trace with hash 246632696, now seen corresponding path program 1 times [2024-11-28 02:45:26,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:26,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942321359] [2024-11-28 02:45:26,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:26,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:27,475 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 299 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-28 02:45:27,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:27,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942321359] [2024-11-28 02:45:27,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942321359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:27,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:45:27,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:45:27,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291720451] [2024-11-28 02:45:27,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:27,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:45:27,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:27,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:45:27,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:45:27,479 INFO L87 Difference]: Start difference. First operand 699 states and 894 transitions. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:28,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:28,232 INFO L93 Difference]: Finished difference Result 1396 states and 1831 transitions. [2024-11-28 02:45:28,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:45:28,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 308 [2024-11-28 02:45:28,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:28,238 INFO L225 Difference]: With dead ends: 1396 [2024-11-28 02:45:28,239 INFO L226 Difference]: Without dead ends: 838 [2024-11-28 02:45:28,240 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:45:28,242 INFO L435 NwaCegarLoop]: 210 mSDtfsCounter, 76 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:28,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 215 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:45:28,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2024-11-28 02:45:28,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 838. [2024-11-28 02:45:28,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 1.2461170848267622) internal successors, (1043), 837 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:28,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1043 transitions. [2024-11-28 02:45:28,268 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1043 transitions. Word has length 308 [2024-11-28 02:45:28,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:28,269 INFO L471 AbstractCegarLoop]: Abstraction has 838 states and 1043 transitions. [2024-11-28 02:45:28,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:28,270 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1043 transitions. [2024-11-28 02:45:28,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-11-28 02:45:28,276 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:28,276 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:28,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:45:28,277 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:28,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:28,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1107038948, now seen corresponding path program 1 times [2024-11-28 02:45:28,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:28,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570464264] [2024-11-28 02:45:28,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:28,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:28,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:29,314 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-28 02:45:29,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:29,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570464264] [2024-11-28 02:45:29,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570464264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:29,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:45:29,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:45:29,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963718501] [2024-11-28 02:45:29,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:29,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:45:29,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:29,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:45:29,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:45:29,318 INFO L87 Difference]: Start difference. First operand 838 states and 1043 transitions. Second operand has 7 states, 7 states have (on average 36.42857142857143) internal successors, (255), 6 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:30,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:30,042 INFO L93 Difference]: Finished difference Result 1590 states and 1995 transitions. [2024-11-28 02:45:30,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:45:30,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.42857142857143) internal successors, (255), 6 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 317 [2024-11-28 02:45:30,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:30,047 INFO L225 Difference]: With dead ends: 1590 [2024-11-28 02:45:30,048 INFO L226 Difference]: Without dead ends: 838 [2024-11-28 02:45:30,049 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:45:30,049 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 142 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:30,050 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 20 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:45:30,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2024-11-28 02:45:30,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 838. [2024-11-28 02:45:30,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 1.2413381123058542) internal successors, (1039), 837 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:30,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1039 transitions. [2024-11-28 02:45:30,076 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1039 transitions. Word has length 317 [2024-11-28 02:45:30,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:30,077 INFO L471 AbstractCegarLoop]: Abstraction has 838 states and 1039 transitions. [2024-11-28 02:45:30,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.42857142857143) internal successors, (255), 6 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:30,077 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1039 transitions. [2024-11-28 02:45:30,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2024-11-28 02:45:30,084 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:30,084 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:30,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:45:30,085 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:30,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:30,086 INFO L85 PathProgramCache]: Analyzing trace with hash -661333366, now seen corresponding path program 1 times [2024-11-28 02:45:30,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:30,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302858964] [2024-11-28 02:45:30,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:30,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:31,025 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 352 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:45:31,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:31,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302858964] [2024-11-28 02:45:31,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302858964] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:45:31,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246448564] [2024-11-28 02:45:31,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:31,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:45:31,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc98865-cb65-4813-a356-bbe3ac7b3ccd/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:45:31,030 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc98865-cb65-4813-a356-bbe3ac7b3ccd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:45:31,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc98865-cb65-4813-a356-bbe3ac7b3ccd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:45:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:31,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:45:31,300 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:45:31,620 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-28 02:45:31,626 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:45:31,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246448564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:31,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:45:31,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-28 02:45:31,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420594998] [2024-11-28 02:45:31,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:31,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:45:31,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:31,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:45:31,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:45:31,630 INFO L87 Difference]: Start difference. First operand 838 states and 1039 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:32,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:32,469 INFO L93 Difference]: Finished difference Result 2091 states and 2637 transitions. [2024-11-28 02:45:32,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:45:32,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 353 [2024-11-28 02:45:32,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:32,478 INFO L225 Difference]: With dead ends: 2091 [2024-11-28 02:45:32,478 INFO L226 Difference]: Without dead ends: 1394 [2024-11-28 02:45:32,480 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:45:32,481 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 26 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:32,482 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 195 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 02:45:32,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2024-11-28 02:45:32,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1394. [2024-11-28 02:45:32,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1393 states have (on average 1.198851399856425) internal successors, (1670), 1393 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:32,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 1670 transitions. [2024-11-28 02:45:32,540 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 1670 transitions. Word has length 353 [2024-11-28 02:45:32,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:32,541 INFO L471 AbstractCegarLoop]: Abstraction has 1394 states and 1670 transitions. [2024-11-28 02:45:32,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:32,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 1670 transitions. [2024-11-28 02:45:32,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2024-11-28 02:45:32,554 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:32,554 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:32,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc98865-cb65-4813-a356-bbe3ac7b3ccd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 02:45:32,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc98865-cb65-4813-a356-bbe3ac7b3ccd/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:45:32,755 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:32,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:32,756 INFO L85 PathProgramCache]: Analyzing trace with hash -72858450, now seen corresponding path program 1 times [2024-11-28 02:45:32,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:32,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730449511] [2024-11-28 02:45:32,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:32,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:33,365 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2024-11-28 02:45:33,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:33,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730449511] [2024-11-28 02:45:33,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730449511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:33,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:45:33,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:45:33,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882289131] [2024-11-28 02:45:33,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:33,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:45:33,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:33,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:45:33,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:45:33,369 INFO L87 Difference]: Start difference. First operand 1394 states and 1670 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:34,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:34,162 INFO L93 Difference]: Finished difference Result 3064 states and 3736 transitions. [2024-11-28 02:45:34,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:45:34,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 366 [2024-11-28 02:45:34,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:34,171 INFO L225 Difference]: With dead ends: 3064 [2024-11-28 02:45:34,172 INFO L226 Difference]: Without dead ends: 1811 [2024-11-28 02:45:34,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:45:34,174 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 89 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:34,176 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 225 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:45:34,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2024-11-28 02:45:34,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1672. [2024-11-28 02:45:34,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1672 states, 1671 states have (on average 1.1807301017354876) internal successors, (1973), 1671 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:34,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 1973 transitions. [2024-11-28 02:45:34,228 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 1973 transitions. Word has length 366 [2024-11-28 02:45:34,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:34,229 INFO L471 AbstractCegarLoop]: Abstraction has 1672 states and 1973 transitions. [2024-11-28 02:45:34,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:34,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 1973 transitions. [2024-11-28 02:45:34,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2024-11-28 02:45:34,239 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:34,240 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:34,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:45:34,241 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:34,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:34,242 INFO L85 PathProgramCache]: Analyzing trace with hash -68035747, now seen corresponding path program 1 times [2024-11-28 02:45:34,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:34,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637998440] [2024-11-28 02:45:34,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:34,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:35,321 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2024-11-28 02:45:35,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:35,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637998440] [2024-11-28 02:45:35,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637998440] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:35,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:45:35,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:45:35,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283622891] [2024-11-28 02:45:35,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:35,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:45:35,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:35,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:45:35,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:45:35,325 INFO L87 Difference]: Start difference. First operand 1672 states and 1973 transitions. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:35,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:35,942 INFO L93 Difference]: Finished difference Result 3068 states and 3617 transitions. [2024-11-28 02:45:35,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:45:35,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 367 [2024-11-28 02:45:35,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:35,944 INFO L225 Difference]: With dead ends: 3068 [2024-11-28 02:45:35,944 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 02:45:35,947 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:45:35,948 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 89 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:35,948 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 12 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:45:35,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 02:45:35,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 02:45:35,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:35,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 02:45:35,951 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 367 [2024-11-28 02:45:35,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:35,951 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 02:45:35,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:35,952 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 02:45:35,952 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 02:45:35,955 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 02:45:35,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:45:35,960 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:35,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-28 02:45:36,138 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:45:36,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:45:36 BoogieIcfgContainer [2024-11-28 02:45:36,171 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:45:36,172 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:45:36,176 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:45:36,176 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:45:36,177 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:45:20" (3/4) ... [2024-11-28 02:45:36,179 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 02:45:36,208 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-28 02:45:36,211 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-28 02:45:36,215 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 02:45:36,216 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-28 02:45:36,409 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc98865-cb65-4813-a356-bbe3ac7b3ccd/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 02:45:36,411 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc98865-cb65-4813-a356-bbe3ac7b3ccd/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 02:45:36,411 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:45:36,413 INFO L158 Benchmark]: Toolchain (without parser) took 18799.80ms. Allocated memory was 117.4MB in the beginning and 318.8MB in the end (delta: 201.3MB). Free memory was 91.4MB in the beginning and 262.3MB in the end (delta: -170.9MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. [2024-11-28 02:45:36,414 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 117.4MB. Free memory was 72.4MB in the beginning and 72.2MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:45:36,415 INFO L158 Benchmark]: CACSL2BoogieTranslator took 783.18ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 64.3MB in the end (delta: 26.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 02:45:36,416 INFO L158 Benchmark]: Boogie Procedure Inliner took 150.89ms. Allocated memory is still 117.4MB. Free memory was 64.1MB in the beginning and 56.5MB in the end (delta: 7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:45:36,417 INFO L158 Benchmark]: Boogie Preprocessor took 118.10ms. Allocated memory is still 117.4MB. Free memory was 56.5MB in the beginning and 46.9MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:45:36,417 INFO L158 Benchmark]: RCFGBuilder took 1966.62ms. Allocated memory is still 117.4MB. Free memory was 46.9MB in the beginning and 56.0MB in the end (delta: -9.1MB). Peak memory consumption was 34.1MB. Max. memory is 16.1GB. [2024-11-28 02:45:36,418 INFO L158 Benchmark]: TraceAbstraction took 15533.89ms. Allocated memory was 117.4MB in the beginning and 318.8MB in the end (delta: 201.3MB). Free memory was 55.4MB in the beginning and 273.3MB in the end (delta: -218.0MB). Peak memory consumption was 123.7MB. Max. memory is 16.1GB. [2024-11-28 02:45:36,418 INFO L158 Benchmark]: Witness Printer took 239.05ms. Allocated memory is still 318.8MB. Free memory was 273.3MB in the beginning and 262.3MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:45:36,421 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 117.4MB. Free memory was 72.4MB in the beginning and 72.2MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 783.18ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 64.3MB in the end (delta: 26.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 150.89ms. Allocated memory is still 117.4MB. Free memory was 64.1MB in the beginning and 56.5MB in the end (delta: 7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 118.10ms. Allocated memory is still 117.4MB. Free memory was 56.5MB in the beginning and 46.9MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1966.62ms. Allocated memory is still 117.4MB. Free memory was 46.9MB in the beginning and 56.0MB in the end (delta: -9.1MB). Peak memory consumption was 34.1MB. Max. memory is 16.1GB. * TraceAbstraction took 15533.89ms. Allocated memory was 117.4MB in the beginning and 318.8MB in the end (delta: 201.3MB). Free memory was 55.4MB in the beginning and 273.3MB in the end (delta: -218.0MB). Peak memory consumption was 123.7MB. Max. memory is 16.1GB. * Witness Printer took 239.05ms. Allocated memory is still 318.8MB. Free memory was 273.3MB in the beginning and 262.3MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 173]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 206 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15.2s, OverallIterations: 8, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1031 SdHoareTripleChecker+Valid, 6.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1031 mSDsluCounter, 971 SdHoareTripleChecker+Invalid, 5.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 52 mSDsCounter, 626 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3401 IncrementalHoareTripleChecker+Invalid, 4027 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 626 mSolverCounterUnsat, 919 mSDtfsCounter, 3401 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 382 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1672occurred in iteration=7, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 278 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 2591 NumberOfCodeBlocks, 2591 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 2582 ConstructedInterpolants, 0 QuantifiedInterpolants, 9855 SizeOfPredicates, 0 NumberOfNonLiveVariables, 481 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 2638/2683 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 592]: Loop Invariant Derived loop invariant: (((((((a10 == 0) && (14 == a4)) && (((long long) a1 + 551894) <= 0)) && (a12 == 0)) || (((a19 != 6) && (14 == a4)) && (a12 == 0))) || (((a10 == 3) && (14 == a4)) && (a12 == 0))) || (((a10 == 4) && (14 == a4)) && (a12 == 0))) RESULT: Ultimate proved your program to be correct! [2024-11-28 02:45:36,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc98865-cb65-4813-a356-bbe3ac7b3ccd/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE