./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-37.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-37.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd --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 602710bfdeba1413bfd2cc1b6bd5a194591bac373d29bd83e435c67ebf5ec2d9 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:42:15,459 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:42:15,541 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 13:42:15,549 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:42:15,550 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:42:15,582 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:42:15,583 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:42:15,584 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:42:15,584 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:42:15,584 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:42:15,585 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:42:15,585 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:42:15,585 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:42:15,586 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:42:15,586 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:42:15,586 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:42:15,586 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:42:15,586 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:42:15,586 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:42:15,586 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:42:15,587 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:42:15,587 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:42:15,587 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:42:15,587 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:42:15,587 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:42:15,587 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:42:15,587 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:42:15,587 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:42:15,588 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:42:15,588 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:42:15,588 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:42:15,589 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:42:15,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:42:15,589 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:42:15,589 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:42:15,590 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:42:15,590 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:42:15,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:42:15,590 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:42:15,590 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:42:15,591 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:42:15,591 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:42:15,591 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_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd 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 -> 602710bfdeba1413bfd2cc1b6bd5a194591bac373d29bd83e435c67ebf5ec2d9 [2024-11-13 13:42:15,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:42:15,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:42:15,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:42:16,000 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:42:16,001 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:42:16,005 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-37.i Unable to find full path for "g++" [2024-11-13 13:42:18,545 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:42:18,982 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:42:18,983 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-37.i [2024-11-13 13:42:19,007 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/data/5c385510d/b5cbe00bff8f484e9cb63f022fb728c0/FLAG9ababafd2 [2024-11-13 13:42:19,031 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/data/5c385510d/b5cbe00bff8f484e9cb63f022fb728c0 [2024-11-13 13:42:19,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:42:19,036 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:42:19,038 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:42:19,038 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:42:19,045 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:42:19,046 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:42:19" (1/1) ... [2024-11-13 13:42:19,047 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42d90c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:19, skipping insertion in model container [2024-11-13 13:42:19,047 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:42:19" (1/1) ... [2024-11-13 13:42:19,070 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:42:19,294 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_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-37.i[915,928] [2024-11-13 13:42:19,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:42:19,402 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:42:19,419 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_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-37.i[915,928] [2024-11-13 13:42:19,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:42:19,499 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:42:19,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:19 WrapperNode [2024-11-13 13:42:19,500 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:42:19,501 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:42:19,502 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:42:19,502 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:42:19,511 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:19" (1/1) ... [2024-11-13 13:42:19,523 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:19" (1/1) ... [2024-11-13 13:42:19,602 INFO L138 Inliner]: procedures = 26, calls = 22, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 112 [2024-11-13 13:42:19,603 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:42:19,603 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:42:19,605 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:42:19,605 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:42:19,615 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:19" (1/1) ... [2024-11-13 13:42:19,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:19" (1/1) ... [2024-11-13 13:42:19,619 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:19" (1/1) ... [2024-11-13 13:42:19,644 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]. [2024-11-13 13:42:19,645 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:19" (1/1) ... [2024-11-13 13:42:19,645 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:19" (1/1) ... [2024-11-13 13:42:19,655 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:19" (1/1) ... [2024-11-13 13:42:19,660 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:19" (1/1) ... [2024-11-13 13:42:19,662 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:19" (1/1) ... [2024-11-13 13:42:19,664 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:19" (1/1) ... [2024-11-13 13:42:19,673 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:42:19,674 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:42:19,674 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:42:19,674 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:42:19,675 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:19" (1/1) ... [2024-11-13 13:42:19,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:42:19,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:42:19,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:42:19,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:42:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:42:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-13 13:42:19,774 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-13 13:42:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:42:19,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:42:19,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:42:19,896 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:42:19,898 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:42:20,534 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-13 13:42:20,538 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:42:20,557 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:42:20,558 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 13:42:20,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:42:20 BoogieIcfgContainer [2024-11-13 13:42:20,559 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:42:20,562 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:42:20,563 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:42:20,570 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:42:20,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:42:19" (1/3) ... [2024-11-13 13:42:20,571 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b7d7169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:42:20, skipping insertion in model container [2024-11-13 13:42:20,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:19" (2/3) ... [2024-11-13 13:42:20,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b7d7169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:42:20, skipping insertion in model container [2024-11-13 13:42:20,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:42:20" (3/3) ... [2024-11-13 13:42:20,574 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-37.i [2024-11-13 13:42:20,599 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:42:20,601 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_25-1loop_file-37.i that has 2 procedures, 50 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 13:42:20,697 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:42:20,720 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;@26e8c422, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:42:20,721 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 13:42:20,726 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 39 states have internal predecessors, (54), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-13 13:42:20,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-13 13:42:20,743 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:42:20,744 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:42:20,744 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:42:20,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:42:20,753 INFO L85 PathProgramCache]: Analyzing trace with hash -460196902, now seen corresponding path program 1 times [2024-11-13 13:42:20,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:42:20,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358848769] [2024-11-13 13:42:20,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:42:20,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:42:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:21,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 13:42:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:21,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-13 13:42:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:21,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 13:42:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:21,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 13:42:21,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:21,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 13:42:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:21,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-13 13:42:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:21,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 13:42:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:21,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-13 13:42:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:21,244 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-13 13:42:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:21,267 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-13 13:42:21,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:42:21,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358848769] [2024-11-13 13:42:21,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358848769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:42:21,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:42:21,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:42:21,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845644934] [2024-11-13 13:42:21,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:42:21,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:42:21,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:42:21,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:42:21,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:42:21,318 INFO L87 Difference]: Start difference. First operand has 50 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 39 states have internal predecessors, (54), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-13 13:42:21,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:42:21,353 INFO L93 Difference]: Finished difference Result 97 states and 150 transitions. [2024-11-13 13:42:21,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:42:21,356 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 68 [2024-11-13 13:42:21,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:42:21,367 INFO L225 Difference]: With dead ends: 97 [2024-11-13 13:42:21,368 INFO L226 Difference]: Without dead ends: 46 [2024-11-13 13:42:21,374 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:42:21,394 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:42:21,396 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:42:21,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-13 13:42:21,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-13 13:42:21,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 35 states have internal predecessors, (47), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-13 13:42:21,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 65 transitions. [2024-11-13 13:42:21,466 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 65 transitions. Word has length 68 [2024-11-13 13:42:21,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:42:21,468 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 65 transitions. [2024-11-13 13:42:21,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-13 13:42:21,469 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 65 transitions. [2024-11-13 13:42:21,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-13 13:42:21,472 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:42:21,472 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:42:21,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:42:21,472 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:42:21,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:42:21,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1743183908, now seen corresponding path program 1 times [2024-11-13 13:42:21,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:42:21,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310520247] [2024-11-13 13:42:21,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:42:21,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:42:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:22,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 13:42:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:22,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-13 13:42:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:22,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 13:42:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:22,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 13:42:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:22,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 13:42:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:22,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-13 13:42:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:22,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 13:42:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:22,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-13 13:42:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:22,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-13 13:42:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:22,111 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-13 13:42:22,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:42:22,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310520247] [2024-11-13 13:42:22,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310520247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:42:22,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:42:22,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:42:22,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793264019] [2024-11-13 13:42:22,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:42:22,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:42:22,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:42:22,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:42:22,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:42:22,115 INFO L87 Difference]: Start difference. First operand 46 states and 65 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-13 13:42:22,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:42:22,175 INFO L93 Difference]: Finished difference Result 89 states and 127 transitions. [2024-11-13 13:42:22,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:42:22,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 68 [2024-11-13 13:42:22,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:42:22,179 INFO L225 Difference]: With dead ends: 89 [2024-11-13 13:42:22,179 INFO L226 Difference]: Without dead ends: 46 [2024-11-13 13:42:22,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:42:22,181 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:42:22,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:42:22,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-13 13:42:22,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-13 13:42:22,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 35 states have internal predecessors, (46), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-13 13:42:22,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 64 transitions. [2024-11-13 13:42:22,193 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 64 transitions. Word has length 68 [2024-11-13 13:42:22,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:42:22,198 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 64 transitions. [2024-11-13 13:42:22,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-13 13:42:22,199 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 64 transitions. [2024-11-13 13:42:22,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-13 13:42:22,201 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:42:22,201 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:42:22,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:42:22,202 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:42:22,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:42:22,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1742436762, now seen corresponding path program 1 times [2024-11-13 13:42:22,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:42:22,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91372694] [2024-11-13 13:42:22,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:42:22,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:42:22,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:22,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 13:42:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:22,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-13 13:42:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:22,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 13:42:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:22,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 13:42:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:22,749 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 13:42:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:22,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-13 13:42:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:22,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 13:42:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:22,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-13 13:42:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:22,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-13 13:42:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:22,811 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-13 13:42:22,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:42:22,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91372694] [2024-11-13 13:42:22,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91372694] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:42:22,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187316849] [2024-11-13 13:42:22,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:42:22,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:42:22,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:42:22,817 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:42:22,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:42:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:23,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 13:42:23,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:42:23,412 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-13 13:42:23,412 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:42:23,778 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-13 13:42:23,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187316849] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:42:23,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:42:23,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-13 13:42:23,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953284338] [2024-11-13 13:42:23,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:42:23,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 13:42:23,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:42:23,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 13:42:23,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:42:23,787 INFO L87 Difference]: Start difference. First operand 46 states and 64 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-13 13:42:24,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:42:24,099 INFO L93 Difference]: Finished difference Result 95 states and 130 transitions. [2024-11-13 13:42:24,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 13:42:24,103 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) Word has length 68 [2024-11-13 13:42:24,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:42:24,104 INFO L225 Difference]: With dead ends: 95 [2024-11-13 13:42:24,105 INFO L226 Difference]: Without dead ends: 52 [2024-11-13 13:42:24,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:42:24,108 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 35 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:42:24,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 101 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:42:24,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-13 13:42:24,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2024-11-13 13:42:24,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 38 states have (on average 1.236842105263158) internal successors, (47), 38 states have internal predecessors, (47), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-13 13:42:24,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 65 transitions. [2024-11-13 13:42:24,126 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 65 transitions. Word has length 68 [2024-11-13 13:42:24,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:42:24,126 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 65 transitions. [2024-11-13 13:42:24,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-13 13:42:24,127 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 65 transitions. [2024-11-13 13:42:24,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-13 13:42:24,128 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:42:24,128 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:42:24,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 13:42:24,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:42:24,332 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:42:24,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:42:24,333 INFO L85 PathProgramCache]: Analyzing trace with hash -751639650, now seen corresponding path program 1 times [2024-11-13 13:42:24,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:42:24,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3821535] [2024-11-13 13:42:24,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:42:24,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:42:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:24,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 13:42:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:24,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-13 13:42:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:24,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 13:42:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:24,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 13:42:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:24,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 13:42:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:24,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-13 13:42:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:24,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 13:42:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:24,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-13 13:42:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:24,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-13 13:42:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:24,901 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-13 13:42:24,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:42:24,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3821535] [2024-11-13 13:42:24,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3821535] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:42:24,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629915679] [2024-11-13 13:42:24,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:42:24,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:42:24,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:42:24,907 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:42:24,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:42:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:25,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 13:42:25,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:42:25,323 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-13 13:42:25,323 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:42:25,647 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-13 13:42:25,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629915679] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:42:25,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:42:25,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2024-11-13 13:42:25,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562566915] [2024-11-13 13:42:25,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:42:25,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:42:25,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:42:25,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:42:25,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:42:25,658 INFO L87 Difference]: Start difference. First operand 50 states and 65 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-13 13:42:26,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:42:26,013 INFO L93 Difference]: Finished difference Result 101 states and 133 transitions. [2024-11-13 13:42:26,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 13:42:26,016 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) Word has length 70 [2024-11-13 13:42:26,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:42:26,018 INFO L225 Difference]: With dead ends: 101 [2024-11-13 13:42:26,018 INFO L226 Difference]: Without dead ends: 54 [2024-11-13 13:42:26,018 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2024-11-13 13:42:26,019 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 106 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:42:26,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 168 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:42:26,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-13 13:42:26,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2024-11-13 13:42:26,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 39 states have internal predecessors, (48), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-13 13:42:26,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2024-11-13 13:42:26,028 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 70 [2024-11-13 13:42:26,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:42:26,029 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2024-11-13 13:42:26,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-13 13:42:26,029 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2024-11-13 13:42:26,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-13 13:42:26,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:42:26,030 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:42:26,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 13:42:26,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:42:26,235 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:42:26,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:42:26,235 INFO L85 PathProgramCache]: Analyzing trace with hash 2111033880, now seen corresponding path program 1 times [2024-11-13 13:42:26,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:42:26,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107389113] [2024-11-13 13:42:26,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:42:26,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:42:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:42:26,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2061672995] [2024-11-13 13:42:26,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:42:26,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:42:26,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:42:26,336 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:42:26,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:42:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:26,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 13:42:26,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:42:27,009 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-13 13:42:27,009 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:42:27,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:42:27,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107389113] [2024-11-13 13:42:27,013 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 13:42:27,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061672995] [2024-11-13 13:42:27,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061672995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:42:27,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:42:27,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:42:27,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757062243] [2024-11-13 13:42:27,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:42:27,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:42:27,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:42:27,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:42:27,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:42:27,015 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-13 13:42:27,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:42:27,207 INFO L93 Difference]: Finished difference Result 147 states and 192 transitions. [2024-11-13 13:42:27,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:42:27,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 71 [2024-11-13 13:42:27,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:42:27,210 INFO L225 Difference]: With dead ends: 147 [2024-11-13 13:42:27,210 INFO L226 Difference]: Without dead ends: 99 [2024-11-13 13:42:27,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:42:27,212 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 46 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:42:27,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 147 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:42:27,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-13 13:42:27,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 91. [2024-11-13 13:42:27,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 68 states have (on average 1.1911764705882353) internal successors, (81), 68 states have internal predecessors, (81), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-13 13:42:27,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 117 transitions. [2024-11-13 13:42:27,237 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 117 transitions. Word has length 71 [2024-11-13 13:42:27,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:42:27,242 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 117 transitions. [2024-11-13 13:42:27,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-13 13:42:27,242 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 117 transitions. [2024-11-13 13:42:27,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-13 13:42:27,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:42:27,246 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:42:27,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 13:42:27,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:42:27,447 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:42:27,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:42:27,447 INFO L85 PathProgramCache]: Analyzing trace with hash -598487938, now seen corresponding path program 1 times [2024-11-13 13:42:27,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:42:27,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481023786] [2024-11-13 13:42:27,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:42:27,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:42:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:42:27,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2019622959] [2024-11-13 13:42:27,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:42:27,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:42:27,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:42:27,570 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:42:27,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:42:27,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:42:27,703 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:42:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:42:27,830 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:42:27,830 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:42:27,831 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-13 13:42:27,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 13:42:28,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 13:42:28,038 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-13 13:42:28,138 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 13:42:28,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 01:42:28 BoogieIcfgContainer [2024-11-13 13:42:28,145 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 13:42:28,146 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 13:42:28,146 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 13:42:28,147 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 13:42:28,148 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:42:20" (3/4) ... [2024-11-13 13:42:28,151 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-13 13:42:28,152 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 13:42:28,153 INFO L158 Benchmark]: Toolchain (without parser) took 9117.05ms. Allocated memory was 167.8MB in the beginning and 411.0MB in the end (delta: 243.3MB). Free memory was 125.6MB in the beginning and 240.0MB in the end (delta: -114.5MB). Peak memory consumption was 130.3MB. Max. memory is 16.1GB. [2024-11-13 13:42:28,153 INFO L158 Benchmark]: CDTParser took 0.56ms. Allocated memory is still 167.8MB. Free memory is still 106.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:42:28,154 INFO L158 Benchmark]: CACSL2BoogieTranslator took 462.19ms. Allocated memory is still 167.8MB. Free memory was 125.3MB in the beginning and 112.9MB in the end (delta: 12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:42:28,155 INFO L158 Benchmark]: Boogie Procedure Inliner took 101.77ms. Allocated memory is still 167.8MB. Free memory was 112.9MB in the beginning and 109.6MB in the end (delta: 3.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:42:28,156 INFO L158 Benchmark]: Boogie Preprocessor took 69.29ms. Allocated memory is still 167.8MB. Free memory was 109.3MB in the beginning and 105.6MB in the end (delta: 3.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:42:28,156 INFO L158 Benchmark]: RCFGBuilder took 885.45ms. Allocated memory is still 167.8MB. Free memory was 105.6MB in the beginning and 85.4MB in the end (delta: 20.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-13 13:42:28,156 INFO L158 Benchmark]: TraceAbstraction took 7583.85ms. Allocated memory was 167.8MB in the beginning and 411.0MB in the end (delta: 243.3MB). Free memory was 84.7MB in the beginning and 240.1MB in the end (delta: -155.4MB). Peak memory consumption was 88.3MB. Max. memory is 16.1GB. [2024-11-13 13:42:28,157 INFO L158 Benchmark]: Witness Printer took 5.74ms. Allocated memory is still 411.0MB. Free memory was 240.1MB in the beginning and 240.0MB in the end (delta: 50.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:42:28,159 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56ms. Allocated memory is still 167.8MB. Free memory is still 106.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 462.19ms. Allocated memory is still 167.8MB. Free memory was 125.3MB in the beginning and 112.9MB in the end (delta: 12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 101.77ms. Allocated memory is still 167.8MB. Free memory was 112.9MB in the beginning and 109.6MB in the end (delta: 3.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.29ms. Allocated memory is still 167.8MB. Free memory was 109.3MB in the beginning and 105.6MB in the end (delta: 3.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 885.45ms. Allocated memory is still 167.8MB. Free memory was 105.6MB in the beginning and 85.4MB in the end (delta: 20.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 7583.85ms. Allocated memory was 167.8MB in the beginning and 411.0MB in the end (delta: 243.3MB). Free memory was 84.7MB in the beginning and 240.1MB in the end (delta: -155.4MB). Peak memory consumption was 88.3MB. Max. memory is 16.1GB. * Witness Printer took 5.74ms. Allocated memory is still 411.0MB. Free memory was 240.1MB in the beginning and 240.0MB in the end (delta: 50.7kB). There was no memory consumed. 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 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 37, overapproximation of bitwiseOr at line 81, overapproximation of someBinaryDOUBLEComparisonOperation at line 74, overapproximation of someBinaryDOUBLEComparisonOperation at line 81. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned char var_1_1 = 8; [L23] unsigned short int var_1_2 = 59049; [L24] unsigned char var_1_6 = 4; [L25] unsigned char var_1_7 = 1; [L26] unsigned char var_1_8 = 64; [L27] unsigned long int var_1_9 = 64; [L28] unsigned long int var_1_10 = 1776833134; [L29] signed long int var_1_11 = -16; [L30] double var_1_12 = 0.25; [L31] double var_1_13 = 5.5; [L32] unsigned char last_1_var_1_8 = 64; [L33] signed long int last_1_var_1_11 = -16; VAL [isInitial=0, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=59049, var_1_6=4, var_1_7=1, var_1_8=64, var_1_9=64] [L85] isInitial = 1 [L86] FCALL initially() [L87] int k_loop; [L88] k_loop = 0 VAL [isInitial=1, k_loop=0, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=59049, var_1_6=4, var_1_7=1, var_1_8=64, var_1_9=64] [L88] COND TRUE k_loop < 1 [L89] CALL updateLastVariables() [L77] last_1_var_1_8 = var_1_8 [L78] last_1_var_1_11 = var_1_11 VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=59049, var_1_6=4, var_1_7=1, var_1_8=64, var_1_9=64] [L89] RET updateLastVariables() [L90] CALL updateVariables() [L61] var_1_2 = __VERIFIER_nondet_ushort() [L62] CALL assume_abort_if_not(var_1_2 >= 32767) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=4, var_1_7=1, var_1_8=64, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=4, var_1_7=1, var_1_8=64, var_1_9=64] [L62] RET assume_abort_if_not(var_1_2 >= 32767) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=4, var_1_7=1, var_1_8=64, var_1_9=64] [L63] CALL assume_abort_if_not(var_1_2 <= 65535) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=4, var_1_7=1, var_1_8=64, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=4, var_1_7=1, var_1_8=64, var_1_9=64] [L63] RET assume_abort_if_not(var_1_2 <= 65535) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=4, var_1_7=1, var_1_8=64, var_1_9=64] [L64] var_1_6 = __VERIFIER_nondet_uchar() [L65] CALL assume_abort_if_not(var_1_6 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_7=1, var_1_8=64, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_7=1, var_1_8=64, var_1_9=64] [L65] RET assume_abort_if_not(var_1_6 >= 0) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_7=1, var_1_8=64, var_1_9=64] [L66] CALL assume_abort_if_not(var_1_6 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L66] RET assume_abort_if_not(var_1_6 <= 254) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L67] var_1_7 = __VERIFIER_nondet_uchar() [L68] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_8=64, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_8=64, var_1_9=64] [L68] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_8=64, var_1_9=64] [L69] CALL assume_abort_if_not(var_1_7 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L69] RET assume_abort_if_not(var_1_7 <= 1) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L70] var_1_10 = __VERIFIER_nondet_ulong() [L71] CALL assume_abort_if_not(var_1_10 >= 1073741824) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1073741824, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1073741824, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L71] RET assume_abort_if_not(var_1_10 >= 1073741824) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1073741824, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L72] CALL assume_abort_if_not(var_1_10 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1073741824, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1073741824, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L72] RET assume_abort_if_not(var_1_10 <= 2147483647) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1073741824, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L73] var_1_13 = __VERIFIER_nondet_double() [L74] CALL assume_abort_if_not((var_1_13 >= -922337.2036854765600e+13F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854765600e+12F && var_1_13 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1073741824, var_1_11=-16, var_1_12=1/4, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1073741824, var_1_11=-16, var_1_12=1/4, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L74] RET assume_abort_if_not((var_1_13 >= -922337.2036854765600e+13F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854765600e+12F && var_1_13 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1073741824, var_1_11=-16, var_1_12=1/4, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L90] RET updateVariables() [L91] CALL step() [L37] EXPR (var_1_2 - last_1_var_1_8) ^ (last_1_var_1_8 * last_1_var_1_11) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1073741824, var_1_11=-16, var_1_12=1/4, var_1_1=8, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L37] COND TRUE ((var_1_2 - last_1_var_1_8) ^ (last_1_var_1_8 * last_1_var_1_11)) <= -64 [L38] var_1_1 = ((((1) < (((((16) > (var_1_6)) ? (16) : (var_1_6))))) ? (1) : (((((16) > (var_1_6)) ? (16) : (var_1_6)))))) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1073741824, var_1_11=-16, var_1_12=1/4, var_1_1=1, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L44] var_1_11 = var_1_1 VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1073741824, var_1_11=1, var_1_12=1/4, var_1_1=1, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=64, var_1_9=64] [L45] COND TRUE var_1_1 >= ((((var_1_11 / var_1_2) < 0 ) ? -(var_1_11 / var_1_2) : (var_1_11 / var_1_2))) [L46] var_1_8 = var_1_6 VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1073741824, var_1_11=1, var_1_12=1/4, var_1_1=1, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=0, var_1_9=64] [L52] unsigned char stepLocal_0 = var_1_1; VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, stepLocal_0=1, var_1_10=1073741824, var_1_11=1, var_1_12=1/4, var_1_1=1, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=0, var_1_9=64] [L53] COND FALSE !(var_1_1 > stepLocal_0) [L56] var_1_9 = ((1228227409u + var_1_10) - var_1_11) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1073741824, var_1_11=1, var_1_12=1/4, var_1_1=1, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=0, var_1_9=2301969232] [L58] var_1_12 = var_1_13 VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1073741824, var_1_11=1, var_1_12=2, var_1_13=2, var_1_1=1, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=0, var_1_9=2301969232] [L91] RET step() [L92] CALL, EXPR property() [L81] EXPR (var_1_2 - last_1_var_1_8) ^ (last_1_var_1_8 * last_1_var_1_11) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1073741824, var_1_11=1, var_1_12=2, var_1_13=2, var_1_1=1, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=0, var_1_9=2301969232] [L81-L82] return (((((((var_1_2 - last_1_var_1_8) ^ (last_1_var_1_8 * last_1_var_1_11)) <= -64) ? (var_1_1 == ((unsigned char) ((((1) < (((((16) > (var_1_6)) ? (16) : (var_1_6))))) ? (1) : (((((16) > (var_1_6)) ? (16) : (var_1_6)))))))) : (var_1_7 ? (var_1_1 == ((unsigned char) var_1_6)) : 1)) && ((var_1_1 >= ((((var_1_11 / var_1_2) < 0 ) ? -(var_1_11 / var_1_2) : (var_1_11 / var_1_2)))) ? (var_1_8 == ((unsigned char) var_1_6)) : (var_1_7 ? (var_1_8 == ((unsigned char) var_1_6)) : 1))) && ((var_1_1 > var_1_1) ? (var_1_9 == ((unsigned long int) var_1_2)) : (var_1_9 == ((unsigned long int) ((1228227409u + var_1_10) - var_1_11))))) && (var_1_11 == ((signed long int) var_1_1))) && (var_1_12 == ((double) var_1_13)) ; [L92] RET, EXPR property() [L92] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1073741824, var_1_11=1, var_1_12=2, var_1_13=2, var_1_1=1, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=0, var_1_9=2301969232] [L19] reach_error() VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1073741824, var_1_11=1, var_1_12=2, var_1_13=2, var_1_1=1, var_1_2=32767, var_1_6=0, var_1_7=1, var_1_8=0, var_1_9=2301969232] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.4s, OverallIterations: 6, TraceHistogramMax: 9, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 187 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 187 mSDsluCounter, 601 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 337 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 293 IncrementalHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 264 mSDtfsCounter, 293 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 448 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=5, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 13 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 702 NumberOfCodeBlocks, 702 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 612 ConstructedInterpolants, 0 QuantifiedInterpolants, 1770 SizeOfPredicates, 8 NumberOfNonLiveVariables, 545 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 1152/1296 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-13 13:42:28,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-37.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd --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 602710bfdeba1413bfd2cc1b6bd5a194591bac373d29bd83e435c67ebf5ec2d9 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:42:31,569 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:42:31,752 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-13 13:42:31,764 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:42:31,765 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:42:31,802 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:42:31,803 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:42:31,804 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:42:31,804 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:42:31,804 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:42:31,804 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:42:31,804 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:42:31,805 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:42:31,805 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:42:31,806 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:42:31,806 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:42:31,806 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:42:31,806 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:42:31,807 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:42:31,807 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:42:31,807 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:42:31,807 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:42:31,807 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:42:31,808 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 13:42:31,808 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 13:42:31,808 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:42:31,808 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 13:42:31,808 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:42:31,809 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:42:31,809 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:42:31,809 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:42:31,809 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:42:31,809 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:42:31,810 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:42:31,810 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:42:31,810 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:42:31,810 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:42:31,810 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:42:31,811 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 13:42:31,811 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 13:42:31,811 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:42:31,811 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:42:31,811 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:42:31,811 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:42:31,812 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_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd 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 -> 602710bfdeba1413bfd2cc1b6bd5a194591bac373d29bd83e435c67ebf5ec2d9 [2024-11-13 13:42:32,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:42:32,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:42:32,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:42:32,232 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:42:32,233 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:42:32,234 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-37.i Unable to find full path for "g++" [2024-11-13 13:42:34,761 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:42:35,135 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:42:35,135 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-37.i [2024-11-13 13:42:35,166 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/data/ae35226f9/7aa982f74a564dcda558f2ba24efa9d1/FLAGa2370973a [2024-11-13 13:42:35,368 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/data/ae35226f9/7aa982f74a564dcda558f2ba24efa9d1 [2024-11-13 13:42:35,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:42:35,375 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:42:35,378 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:42:35,378 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:42:35,390 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:42:35,391 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:42:35" (1/1) ... [2024-11-13 13:42:35,392 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1969fc06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:35, skipping insertion in model container [2024-11-13 13:42:35,395 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:42:35" (1/1) ... [2024-11-13 13:42:35,423 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:42:35,652 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_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-37.i[915,928] [2024-11-13 13:42:35,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:42:35,770 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:42:35,790 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_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-37.i[915,928] [2024-11-13 13:42:35,828 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:42:35,852 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:42:35,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:35 WrapperNode [2024-11-13 13:42:35,854 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:42:35,855 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:42:35,856 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:42:35,856 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:42:35,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:35" (1/1) ... [2024-11-13 13:42:35,886 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:35" (1/1) ... [2024-11-13 13:42:35,926 INFO L138 Inliner]: procedures = 27, calls = 22, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 90 [2024-11-13 13:42:35,927 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:42:35,927 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:42:35,930 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:42:35,930 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:42:35,943 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:35" (1/1) ... [2024-11-13 13:42:35,944 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:35" (1/1) ... [2024-11-13 13:42:35,949 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:35" (1/1) ... [2024-11-13 13:42:35,973 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]. [2024-11-13 13:42:35,976 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:35" (1/1) ... [2024-11-13 13:42:35,976 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:35" (1/1) ... [2024-11-13 13:42:35,989 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:35" (1/1) ... [2024-11-13 13:42:35,996 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:35" (1/1) ... [2024-11-13 13:42:36,002 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:35" (1/1) ... [2024-11-13 13:42:36,003 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:35" (1/1) ... [2024-11-13 13:42:36,009 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:42:36,010 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:42:36,010 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:42:36,014 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:42:36,015 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:35" (1/1) ... [2024-11-13 13:42:36,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:42:36,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:42:36,067 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:42:36,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:42:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:42:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 13:42:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-13 13:42:36,102 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-13 13:42:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:42:36,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:42:36,228 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:42:36,231 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:42:36,625 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-13 13:42:36,625 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:42:36,637 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:42:36,638 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 13:42:36,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:42:36 BoogieIcfgContainer [2024-11-13 13:42:36,639 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:42:36,642 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:42:36,642 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:42:36,648 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:42:36,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:42:35" (1/3) ... [2024-11-13 13:42:36,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1189ddd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:42:36, skipping insertion in model container [2024-11-13 13:42:36,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:35" (2/3) ... [2024-11-13 13:42:36,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1189ddd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:42:36, skipping insertion in model container [2024-11-13 13:42:36,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:42:36" (3/3) ... [2024-11-13 13:42:36,653 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-37.i [2024-11-13 13:42:36,673 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:42:36,675 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_25-1loop_file-37.i that has 2 procedures, 41 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 13:42:36,754 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:42:36,774 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;@6611a9d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:42:36,775 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 13:42:36,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 30 states have internal predecessors, (39), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-13 13:42:36,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-13 13:42:36,787 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:42:36,788 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:42:36,789 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:42:36,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:42:36,795 INFO L85 PathProgramCache]: Analyzing trace with hash -328423520, now seen corresponding path program 1 times [2024-11-13 13:42:36,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:42:36,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476856103] [2024-11-13 13:42:36,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:42:36,809 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:42:36,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:42:36,815 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:42:36,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-13 13:42:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:37,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-13 13:42:37,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:42:37,108 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-13 13:42:37,109 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:42:37,110 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:42:37,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1476856103] [2024-11-13 13:42:37,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1476856103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:42:37,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:42:37,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:42:37,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393287298] [2024-11-13 13:42:37,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:42:37,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:42:37,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:42:37,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:42:37,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:42:37,147 INFO L87 Difference]: Start difference. First operand has 41 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 30 states have internal predecessors, (39), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-13 13:42:37,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:42:37,173 INFO L93 Difference]: Finished difference Result 79 states and 120 transitions. [2024-11-13 13:42:37,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:42:37,175 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 65 [2024-11-13 13:42:37,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:42:37,182 INFO L225 Difference]: With dead ends: 79 [2024-11-13 13:42:37,182 INFO L226 Difference]: Without dead ends: 37 [2024-11-13 13:42:37,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:42:37,191 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:42:37,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:42:37,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-13 13:42:37,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-13 13:42:37,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-13 13:42:37,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 50 transitions. [2024-11-13 13:42:37,238 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 50 transitions. Word has length 65 [2024-11-13 13:42:37,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:42:37,240 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 50 transitions. [2024-11-13 13:42:37,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-13 13:42:37,240 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 50 transitions. [2024-11-13 13:42:37,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-13 13:42:37,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:42:37,246 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:42:37,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-13 13:42:37,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:42:37,447 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:42:37,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:42:37,448 INFO L85 PathProgramCache]: Analyzing trace with hash -936719650, now seen corresponding path program 1 times [2024-11-13 13:42:37,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:42:37,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114618901] [2024-11-13 13:42:37,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:42:37,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:42:37,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:42:37,452 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:42:37,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-13 13:42:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:37,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 13:42:37,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:42:37,716 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-13 13:42:37,716 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:42:37,717 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:42:37,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114618901] [2024-11-13 13:42:37,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [114618901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:42:37,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:42:37,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:42:37,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487996025] [2024-11-13 13:42:37,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:42:37,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:42:37,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:42:37,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:42:37,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:42:37,722 INFO L87 Difference]: Start difference. First operand 37 states and 50 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-13 13:42:37,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:42:37,856 INFO L93 Difference]: Finished difference Result 71 states and 97 transitions. [2024-11-13 13:42:37,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:42:37,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 65 [2024-11-13 13:42:37,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:42:37,863 INFO L225 Difference]: With dead ends: 71 [2024-11-13 13:42:37,863 INFO L226 Difference]: Without dead ends: 37 [2024-11-13 13:42:37,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:42:37,864 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:42:37,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:42:37,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-13 13:42:37,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-13 13:42:37,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-13 13:42:37,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2024-11-13 13:42:37,882 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 49 transitions. Word has length 65 [2024-11-13 13:42:37,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:42:37,885 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 49 transitions. [2024-11-13 13:42:37,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-13 13:42:37,886 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions. [2024-11-13 13:42:37,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-13 13:42:37,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:42:37,891 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:42:37,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-13 13:42:38,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:42:38,092 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:42:38,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:42:38,093 INFO L85 PathProgramCache]: Analyzing trace with hash -879461348, now seen corresponding path program 1 times [2024-11-13 13:42:38,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:42:38,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136967640] [2024-11-13 13:42:38,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:42:38,094 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:42:38,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:42:38,096 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:42:38,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-13 13:42:38,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:42:38,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 13:42:38,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:43:15,573 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-13 13:43:15,574 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:43:15,574 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:43:15,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136967640] [2024-11-13 13:43:15,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136967640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:43:15,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:43:15,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-13 13:43:15,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168557010] [2024-11-13 13:43:15,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:43:15,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 13:43:15,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:43:15,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 13:43:15,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-13 13:43:15,581 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-13 13:43:18,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:43:18,745 INFO L93 Difference]: Finished difference Result 87 states and 112 transitions. [2024-11-13 13:43:18,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 13:43:18,750 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 65 [2024-11-13 13:43:18,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:43:18,751 INFO L225 Difference]: With dead ends: 87 [2024-11-13 13:43:18,752 INFO L226 Difference]: Without dead ends: 53 [2024-11-13 13:43:18,753 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2024-11-13 13:43:18,754 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 68 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:43:18,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 162 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 13:43:18,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-13 13:43:18,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2024-11-13 13:43:18,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-13 13:43:18,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2024-11-13 13:43:18,767 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 60 transitions. Word has length 65 [2024-11-13 13:43:18,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:43:18,767 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 60 transitions. [2024-11-13 13:43:18,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-13 13:43:18,768 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2024-11-13 13:43:18,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-13 13:43:18,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:43:18,770 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:43:18,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-13 13:43:18,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:43:18,974 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:43:18,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:43:18,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1881093359, now seen corresponding path program 1 times [2024-11-13 13:43:18,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:43:18,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996292628] [2024-11-13 13:43:18,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:43:18,976 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:43:18,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:43:18,981 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:43:18,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-13 13:43:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:19,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 13:43:19,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:43:19,993 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-13 13:43:19,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:43:20,604 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:43:20,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996292628] [2024-11-13 13:43:20,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [996292628] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:43:20,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266663052] [2024-11-13 13:43:20,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:43:20,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:43:20,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:43:20,608 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:43:20,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:43:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:20,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 13:43:20,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:44:07,972 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-13 13:44:07,973 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:45:54,239 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-13 13:45:54,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266663052] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 13:45:54,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:45:54,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [6, 13] total 29 [2024-11-13 13:45:54,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255410974] [2024-11-13 13:45:54,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:45:54,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 13:45:54,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:45:54,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 13:45:54,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=766, Unknown=0, NotChecked=0, Total=930 [2024-11-13 13:45:54,244 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-13 13:46:15,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:46:15,829 INFO L93 Difference]: Finished difference Result 85 states and 98 transitions. [2024-11-13 13:46:15,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 13:46:15,832 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 66 [2024-11-13 13:46:15,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:46:15,834 INFO L225 Difference]: With dead ends: 85 [2024-11-13 13:46:15,834 INFO L226 Difference]: Without dead ends: 83 [2024-11-13 13:46:15,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 32.3s TimeCoverageRelationStatistics Valid=355, Invalid=1451, Unknown=0, NotChecked=0, Total=1806 [2024-11-13 13:46:15,838 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 112 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:46:15,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 154 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2024-11-13 13:46:15,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-13 13:46:15,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 51. [2024-11-13 13:46:15,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 39 states have internal predecessors, (45), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-13 13:46:15,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2024-11-13 13:46:15,854 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 66 [2024-11-13 13:46:15,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:46:15,854 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2024-11-13 13:46:15,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-13 13:46:15,855 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2024-11-13 13:46:15,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-13 13:46:15,856 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:46:15,856 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:15,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 13:46:16,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-13 13:46:16,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:46:16,257 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:46:16,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:16,258 INFO L85 PathProgramCache]: Analyzing trace with hash 2020846927, now seen corresponding path program 1 times [2024-11-13 13:46:16,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:46:16,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [949431209] [2024-11-13 13:46:16,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:16,259 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:46:16,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:46:16,261 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:46:16,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-13 13:46:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:16,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 13:46:16,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:46:17,290 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-13 13:46:17,290 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:46:17,887 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:46:17,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [949431209] [2024-11-13 13:46:17,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [949431209] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:46:17,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861330436] [2024-11-13 13:46:17,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:17,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:46:17,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:46:17,890 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:46:17,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 13:46:18,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:18,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 13:46:18,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:47:00,110 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-13 13:47:00,111 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:48:46,878 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-13 13:48:46,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861330436] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 13:48:46,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:48:46,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [6, 13] total 29 [2024-11-13 13:48:46,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515337946] [2024-11-13 13:48:46,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:48:46,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 13:48:46,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:48:46,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 13:48:46,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2024-11-13 13:48:46,881 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-13 13:49:11,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:49:11,282 INFO L93 Difference]: Finished difference Result 128 states and 154 transitions. [2024-11-13 13:49:11,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 13:49:11,292 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 66 [2024-11-13 13:49:11,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:49:11,293 INFO L225 Difference]: With dead ends: 128 [2024-11-13 13:49:11,294 INFO L226 Difference]: Without dead ends: 80 [2024-11-13 13:49:11,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 36.2s TimeCoverageRelationStatistics Valid=265, Invalid=1141, Unknown=0, NotChecked=0, Total=1406 [2024-11-13 13:49:11,295 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 123 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:49:11,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 211 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2024-11-13 13:49:11,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-13 13:49:11,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 52. [2024-11-13 13:49:11,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-13 13:49:11,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2024-11-13 13:49:11,308 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 66 [2024-11-13 13:49:11,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:49:11,309 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2024-11-13 13:49:11,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-13 13:49:11,309 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2024-11-13 13:49:11,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-13 13:49:11,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:49:11,310 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:49:11,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-11-13 13:49:11,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 13:49:11,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:49:11,711 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:49:11,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:49:11,712 INFO L85 PathProgramCache]: Analyzing trace with hash -382286570, now seen corresponding path program 1 times [2024-11-13 13:49:11,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:49:11,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292126930] [2024-11-13 13:49:11,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:49:11,712 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:49:11,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:49:11,715 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:49:11,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-11-13 13:49:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:49:11,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 13:49:11,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:49:12,675 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-13 13:49:12,675 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:49:13,205 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:49:13,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [292126930] [2024-11-13 13:49:13,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [292126930] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:49:13,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420787091] [2024-11-13 13:49:13,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:49:13,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:49:13,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:49:13,207 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:49:13,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 13:49:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:49:13,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 13:49:13,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:49:55,487 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-13 13:49:55,487 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:51:30,036 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-13 13:51:30,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420787091] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 13:51:30,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:51:30,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [6, 14] total 31 [2024-11-13 13:51:30,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833241234] [2024-11-13 13:51:30,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:51:30,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 13:51:30,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:51:30,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 13:51:30,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=856, Unknown=0, NotChecked=0, Total=1056 [2024-11-13 13:51:30,039 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-13 13:51:48,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:48,483 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2024-11-13 13:51:48,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 13:51:48,488 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 67 [2024-11-13 13:51:48,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:48,490 INFO L225 Difference]: With dead ends: 87 [2024-11-13 13:51:48,490 INFO L226 Difference]: Without dead ends: 85 [2024-11-13 13:51:48,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 29.9s TimeCoverageRelationStatistics Valid=382, Invalid=1424, Unknown=0, NotChecked=0, Total=1806 [2024-11-13 13:51:48,492 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 152 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:48,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 191 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2024-11-13 13:51:48,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-13 13:51:48,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 56. [2024-11-13 13:51:48,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 43 states have internal predecessors, (49), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-13 13:51:48,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2024-11-13 13:51:48,517 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 67 [2024-11-13 13:51:48,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:48,518 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2024-11-13 13:51:48,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-13 13:51:48,519 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2024-11-13 13:51:48,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-13 13:51:48,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:48,523 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:48,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-11-13 13:51:48,742 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 13:51:48,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:51:48,925 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:48,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:48,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1191633196, now seen corresponding path program 1 times [2024-11-13 13:51:48,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:51:48,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986085831] [2024-11-13 13:51:48,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:48,926 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:48,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:51:48,929 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:51:48,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-11-13 13:51:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:49,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 13:51:49,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:49,098 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-13 13:51:49,098 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:51:49,098 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:51:49,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986085831] [2024-11-13 13:51:49,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986085831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:51:49,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:51:49,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:51:49,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597621572] [2024-11-13 13:51:49,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:51:49,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:51:49,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:51:49,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:51:49,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:51:49,100 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-13 13:51:49,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:51:49,198 INFO L93 Difference]: Finished difference Result 132 states and 156 transitions. [2024-11-13 13:51:49,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:51:49,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 67 [2024-11-13 13:51:49,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:51:49,204 INFO L225 Difference]: With dead ends: 132 [2024-11-13 13:51:49,204 INFO L226 Difference]: Without dead ends: 79 [2024-11-13 13:51:49,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:51:49,205 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 25 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:51:49,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 94 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:51:49,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-13 13:51:49,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2024-11-13 13:51:49,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 60 states have internal predecessors, (64), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-13 13:51:49,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 90 transitions. [2024-11-13 13:51:49,228 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 90 transitions. Word has length 67 [2024-11-13 13:51:49,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:51:49,228 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 90 transitions. [2024-11-13 13:51:49,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-13 13:51:49,229 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 90 transitions. [2024-11-13 13:51:49,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-13 13:51:49,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:51:49,230 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:49,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-11-13 13:51:49,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:49,433 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:51:49,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:49,434 INFO L85 PathProgramCache]: Analyzing trace with hash -490568618, now seen corresponding path program 1 times [2024-11-13 13:51:49,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:51:49,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889018440] [2024-11-13 13:51:49,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:49,434 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 13:51:49,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 13:51:49,439 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 13:51:49,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-11-13 13:51:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:49,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 13:51:49,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:50,575 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-13 13:51:50,575 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:51:51,209 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:51:51,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889018440] [2024-11-13 13:51:51,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1889018440] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:51:51,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870405945] [2024-11-13 13:51:51,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:51,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:51:51,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:51:51,212 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:51:51,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa8c4d7a-a6db-45db-84a8-6018e04e3f63/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 13:51:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:51,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 13:51:51,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:52:37,293 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-13 13:52:37,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:55:34,864 WARN L286 SmtUtils]: Spent 26.08s on a formula simplification. DAG size of input: 110 DAG size of output: 103 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 13:56:48,086 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-13 13:56:48,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870405945] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 13:56:48,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:56:48,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [6, 13] total 29 [2024-11-13 13:56:48,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373353716] [2024-11-13 13:56:48,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:56:48,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 13:56:48,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:56:48,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 13:56:48,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=754, Unknown=0, NotChecked=0, Total=930 [2024-11-13 13:56:48,088 INFO L87 Difference]: Start difference. First operand 78 states and 90 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9)