./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-79.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-79.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme --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 087e6cd2d99060c16318d94e67eed026c21e542402823046e52131085ccd5550 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:45:24,195 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:45:24,292 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:45:24,297 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:45:24,298 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:45:24,335 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:45:24,338 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:45:24,339 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:45:24,340 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:45:24,340 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:45:24,341 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:45:24,342 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:45:24,342 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:45:24,343 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:45:24,344 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:45:24,344 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:45:24,345 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:45:24,345 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:45:24,346 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:45:24,346 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:45:24,347 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:45:24,348 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:45:24,348 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:45:24,349 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:45:24,349 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:45:24,350 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:45:24,350 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:45:24,351 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:45:24,351 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:45:24,352 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:45:24,352 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:45:24,353 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:45:24,353 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:45:24,354 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:45:24,354 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:45:24,355 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:45:24,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:45:24,356 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:45:24,356 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:45:24,357 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:45:24,357 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:45:24,358 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:45:24,358 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 087e6cd2d99060c16318d94e67eed026c21e542402823046e52131085ccd5550 [2023-11-26 11:45:24,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:45:24,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:45:24,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:45:24,781 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:45:24,782 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:45:24,783 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-79.i [2023-11-26 11:45:27,805 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:45:28,088 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:45:28,089 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-79.i [2023-11-26 11:45:28,099 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/data/60fb2b8b1/faf1006c9e3c4fd8bb333be0e81ddfaf/FLAG1d2b10759 [2023-11-26 11:45:28,117 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/data/60fb2b8b1/faf1006c9e3c4fd8bb333be0e81ddfaf [2023-11-26 11:45:28,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:45:28,121 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:45:28,123 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:45:28,123 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:45:28,129 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:45:28,130 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:45:28" (1/1) ... [2023-11-26 11:45:28,131 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30ab47b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:28, skipping insertion in model container [2023-11-26 11:45:28,132 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:45:28" (1/1) ... [2023-11-26 11:45:28,161 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:45:28,371 WARN L240 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_000722c2-4791-400a-953e-585c4f79fdb3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-79.i[915,928] [2023-11-26 11:45:28,412 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:45:28,426 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:45:28,441 WARN L240 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_000722c2-4791-400a-953e-585c4f79fdb3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-79.i[915,928] [2023-11-26 11:45:28,465 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:45:28,486 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:45:28,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:28 WrapperNode [2023-11-26 11:45:28,487 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:45:28,488 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:45:28,489 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:45:28,489 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:45:28,498 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:28" (1/1) ... [2023-11-26 11:45:28,510 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:28" (1/1) ... [2023-11-26 11:45:28,544 INFO L138 Inliner]: procedures = 26, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 108 [2023-11-26 11:45:28,545 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:45:28,546 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:45:28,546 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:45:28,546 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:45:28,561 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:28" (1/1) ... [2023-11-26 11:45:28,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:28" (1/1) ... [2023-11-26 11:45:28,564 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:28" (1/1) ... [2023-11-26 11:45:28,580 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]. [2023-11-26 11:45:28,581 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:28" (1/1) ... [2023-11-26 11:45:28,581 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:28" (1/1) ... [2023-11-26 11:45:28,591 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:28" (1/1) ... [2023-11-26 11:45:28,596 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:28" (1/1) ... [2023-11-26 11:45:28,598 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:28" (1/1) ... [2023-11-26 11:45:28,600 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:28" (1/1) ... [2023-11-26 11:45:28,604 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:45:28,605 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:45:28,606 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:45:28,606 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:45:28,607 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:28" (1/1) ... [2023-11-26 11:45:28,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:45:28,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:28,668 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:28,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:45:28,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:45:28,705 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:45:28,705 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:45:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:45:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:45:28,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:45:28,786 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:45:28,788 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:45:29,052 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:45:29,104 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:45:29,113 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:45:29,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:29 BoogieIcfgContainer [2023-11-26 11:45:29,114 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:45:29,117 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:45:29,117 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:45:29,120 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:45:29,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:45:28" (1/3) ... [2023-11-26 11:45:29,122 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b6d919b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:45:29, skipping insertion in model container [2023-11-26 11:45:29,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:28" (2/3) ... [2023-11-26 11:45:29,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b6d919b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:45:29, skipping insertion in model container [2023-11-26 11:45:29,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:29" (3/3) ... [2023-11-26 11:45:29,127 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-79.i [2023-11-26 11:45:29,146 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:45:29,146 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:45:29,195 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:45:29,202 INFO L357 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, mHoare=true, 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;@decd134, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:45:29,203 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:45:29,207 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-26 11:45:29,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-26 11:45:29,219 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:29,220 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:29,221 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:29,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:29,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1737405670, now seen corresponding path program 1 times [2023-11-26 11:45:29,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:29,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952734551] [2023-11-26 11:45:29,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:29,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:29,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:45:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:29,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:45:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:29,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:45:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:29,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 11:45:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:29,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-26 11:45:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:29,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:45:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:29,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 11:45:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:29,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-26 11:45:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:29,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:45:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:29,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 11:45:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:29,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 11:45:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:29,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-26 11:45:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:29,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-26 11:45:29,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:29,700 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-26 11:45:29,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:29,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952734551] [2023-11-26 11:45:29,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952734551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:29,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:29,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:29,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450173321] [2023-11-26 11:45:29,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:29,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:45:29,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:29,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:45:29,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:45:29,762 INFO L87 Difference]: Start difference. First operand has 41 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 11:45:29,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:29,841 INFO L93 Difference]: Finished difference Result 81 states and 136 transitions. [2023-11-26 11:45:29,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:45:29,844 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 82 [2023-11-26 11:45:29,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:29,853 INFO L225 Difference]: With dead ends: 81 [2023-11-26 11:45:29,853 INFO L226 Difference]: Without dead ends: 39 [2023-11-26 11:45:29,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:45:29,863 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:29,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:45:29,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-26 11:45:29,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-11-26 11:45:29,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-26 11:45:29,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 57 transitions. [2023-11-26 11:45:29,932 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 57 transitions. Word has length 82 [2023-11-26 11:45:29,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:29,933 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 57 transitions. [2023-11-26 11:45:29,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 11:45:29,934 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 57 transitions. [2023-11-26 11:45:29,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-26 11:45:29,942 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:29,942 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:29,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:45:29,944 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:29,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:29,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1991446756, now seen corresponding path program 1 times [2023-11-26 11:45:29,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:29,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564678294] [2023-11-26 11:45:29,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:29,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:30,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:45:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:30,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:45:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:30,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:45:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:30,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 11:45:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:30,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-26 11:45:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:30,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:45:30,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:30,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 11:45:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:30,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-26 11:45:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:30,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:45:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:30,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 11:45:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:30,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 11:45:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:30,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-26 11:45:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:30,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-26 11:45:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:30,230 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-26 11:45:30,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:30,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564678294] [2023-11-26 11:45:30,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564678294] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:30,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:30,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:30,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864745706] [2023-11-26 11:45:30,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:30,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:30,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:30,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:30,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:30,236 INFO L87 Difference]: Start difference. First operand 39 states and 57 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-26 11:45:30,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:30,280 INFO L93 Difference]: Finished difference Result 86 states and 125 transitions. [2023-11-26 11:45:30,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:30,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 82 [2023-11-26 11:45:30,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:30,284 INFO L225 Difference]: With dead ends: 86 [2023-11-26 11:45:30,284 INFO L226 Difference]: Without dead ends: 48 [2023-11-26 11:45:30,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:30,287 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 11 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:30,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 96 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:45:30,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-11-26 11:45:30,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2023-11-26 11:45:30,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 states have internal predecessors, (36), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-26 11:45:30,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 62 transitions. [2023-11-26 11:45:30,300 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 62 transitions. Word has length 82 [2023-11-26 11:45:30,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:30,302 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 62 transitions. [2023-11-26 11:45:30,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-26 11:45:30,303 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 62 transitions. [2023-11-26 11:45:30,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-26 11:45:30,305 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:30,305 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:30,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:45:30,306 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:30,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:30,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1614667413, now seen corresponding path program 1 times [2023-11-26 11:45:30,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:30,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699197348] [2023-11-26 11:45:30,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:30,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:45:30,440 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:45:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:45:30,528 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:45:30,529 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:45:30,530 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-26 11:45:30,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:45:30,537 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-26 11:45:30,542 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:45:30,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:45:30 BoogieIcfgContainer [2023-11-26 11:45:30,643 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:45:30,644 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:45:30,644 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:45:30,644 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:45:30,645 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:29" (3/4) ... [2023-11-26 11:45:30,647 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-26 11:45:30,649 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:45:30,650 INFO L158 Benchmark]: Toolchain (without parser) took 2528.32ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 98.3MB in the beginning and 127.0MB in the end (delta: -28.7MB). Peak memory consumption was 743.2kB. Max. memory is 16.1GB. [2023-11-26 11:45:30,651 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 132.1MB. Free memory is still 105.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:45:30,651 INFO L158 Benchmark]: CACSL2BoogieTranslator took 364.16ms. Allocated memory is still 132.1MB. Free memory was 98.3MB in the beginning and 86.0MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-26 11:45:30,652 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.92ms. Allocated memory is still 132.1MB. Free memory was 86.0MB in the beginning and 84.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:45:30,653 INFO L158 Benchmark]: Boogie Preprocessor took 58.48ms. Allocated memory is still 132.1MB. Free memory was 84.0MB in the beginning and 81.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:45:30,654 INFO L158 Benchmark]: RCFGBuilder took 508.43ms. Allocated memory is still 132.1MB. Free memory was 81.6MB in the beginning and 65.9MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-26 11:45:30,655 INFO L158 Benchmark]: TraceAbstraction took 1526.61ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 65.2MB in the beginning and 127.0MB in the end (delta: -61.8MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. [2023-11-26 11:45:30,655 INFO L158 Benchmark]: Witness Printer took 5.16ms. Allocated memory is still 159.4MB. Free memory is still 127.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:45:30,659 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 132.1MB. Free memory is still 105.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 364.16ms. Allocated memory is still 132.1MB. Free memory was 98.3MB in the beginning and 86.0MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.92ms. Allocated memory is still 132.1MB. Free memory was 86.0MB in the beginning and 84.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.48ms. Allocated memory is still 132.1MB. Free memory was 84.0MB in the beginning and 81.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 508.43ms. Allocated memory is still 132.1MB. Free memory was 81.6MB in the beginning and 65.9MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1526.61ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 65.2MB in the beginning and 127.0MB in the end (delta: -61.8MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. * Witness Printer took 5.16ms. Allocated memory is still 159.4MB. Free memory is still 127.0MB. 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 someBinaryFLOATComparisonOperation at line 90, overapproximation of someBinaryDOUBLEComparisonOperation at line 90. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed char var_1_1 = -16; [L23] unsigned char var_1_2 = 1; [L24] signed char var_1_3 = 0; [L25] signed char var_1_4 = 64; [L26] signed char var_1_5 = 64; [L27] unsigned short int var_1_6 = 25; [L28] float var_1_7 = 256.4; [L29] double var_1_10 = 9999999999.515; [L30] float var_1_11 = 8.5; [L31] float var_1_12 = 2.5; [L32] double var_1_13 = 15.8; [L33] double var_1_14 = 25.8; [L94] isInitial = 1 [L95] FCALL initially() [L96] int k_loop; [L97] k_loop = 0 VAL [isInitial=1, k_loop=0, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=0, var_1_4=64, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L97] COND TRUE k_loop < 1 [L98] FCALL updateLastVariables() [L99] CALL updateVariables() [L64] var_1_2 = __VERIFIER_nondet_uchar() [L65] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_3=0, var_1_4=64, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_3=0, var_1_4=64, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L65] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_3=0, var_1_4=64, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L66] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=0, var_1_4=64, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=0, var_1_4=64, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L66] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=0, var_1_4=64, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L67] var_1_3 = __VERIFIER_nondet_char() [L68] CALL assume_abort_if_not(var_1_3 >= -63) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=64, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=64, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L68] RET assume_abort_if_not(var_1_3 >= -63) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=64, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L69] CALL assume_abort_if_not(var_1_3 <= 63) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=64, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=64, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L69] RET assume_abort_if_not(var_1_3 <= 63) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=64, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L70] var_1_4 = __VERIFIER_nondet_char() [L71] CALL assume_abort_if_not(var_1_4 >= -1) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L71] RET assume_abort_if_not(var_1_4 >= -1) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L72] CALL assume_abort_if_not(var_1_4 <= 126) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L72] RET assume_abort_if_not(var_1_4 <= 126) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L73] var_1_5 = __VERIFIER_nondet_char() [L74] CALL assume_abort_if_not(var_1_5 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=126, var_1_6=25, var_1_7=1282/5] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=126, var_1_6=25, var_1_7=1282/5] [L74] RET assume_abort_if_not(var_1_5 >= 0) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=126, var_1_6=25, var_1_7=1282/5] [L75] CALL assume_abort_if_not(var_1_5 <= 126) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=126, var_1_6=25, var_1_7=1282/5] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=126, var_1_6=25, var_1_7=1282/5] [L75] RET assume_abort_if_not(var_1_5 <= 126) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=126, var_1_6=25, var_1_7=1282/5] [L76] var_1_7 = __VERIFIER_nondet_float() [L77] CALL assume_abort_if_not((var_1_7 >= 0.0F && var_1_7 <= -1.0e-20F) || (var_1_7 <= 9223372.036854776000e+12F && var_1_7 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=126, var_1_6=25] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=126, var_1_6=25] [L77] RET assume_abort_if_not((var_1_7 >= 0.0F && var_1_7 <= -1.0e-20F) || (var_1_7 <= 9223372.036854776000e+12F && var_1_7 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=126, var_1_6=25] [L78] var_1_11 = __VERIFIER_nondet_float() [L79] CALL assume_abort_if_not((var_1_11 >= 0.0F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 9223372.036854776000e+12F && var_1_11 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=126, var_1_6=25] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_10=1999999999903/200, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=126, var_1_6=25] [L79] RET assume_abort_if_not((var_1_11 >= 0.0F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 9223372.036854776000e+12F && var_1_11 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=126, var_1_6=25] [L80] var_1_12 = __VERIFIER_nondet_float() [L81] CALL assume_abort_if_not((var_1_12 >= 0.0F && var_1_12 <= -1.0e-20F) || (var_1_12 <= 9223372.036854776000e+12F && var_1_12 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=126, var_1_6=25] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_10=1999999999903/200, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=126, var_1_6=25] [L81] RET assume_abort_if_not((var_1_12 >= 0.0F && var_1_12 <= -1.0e-20F) || (var_1_12 <= 9223372.036854776000e+12F && var_1_12 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=126, var_1_6=25] [L82] var_1_13 = __VERIFIER_nondet_double() [L83] CALL assume_abort_if_not((var_1_13 >= 0.0F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854765600e+12F && var_1_13 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=126, var_1_6=25] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_10=1999999999903/200, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=126, var_1_6=25] [L83] RET assume_abort_if_not((var_1_13 >= 0.0F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854765600e+12F && var_1_13 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=126, var_1_6=25] [L84] var_1_14 = __VERIFIER_nondet_double() [L85] CALL assume_abort_if_not((var_1_14 >= 0.0F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 9223372.036854765600e+12F && var_1_14 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=126, var_1_6=25] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, var_1_10=1999999999903/200, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=126, var_1_6=25] [L85] RET assume_abort_if_not((var_1_14 >= 0.0F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 9223372.036854765600e+12F && var_1_14 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=126, var_1_6=25] [L99] RET updateVariables() [L100] CALL step() [L37] COND FALSE !(! var_1_2) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=126, var_1_6=25] [L44] COND FALSE !(var_1_7 < (var_1_11 - var_1_12)) [L51] var_1_10 = var_1_14 VAL [isInitial=1, var_1_10=10000000004, var_1_14=10000000004, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=126, var_1_6=25] [L53] COND TRUE \read(var_1_2) VAL [isInitial=1, var_1_10=10000000004, var_1_14=10000000004, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=126, var_1_6=25] [L54] COND TRUE (var_1_7 - ((((var_1_10) < 0 ) ? -(var_1_10) : (var_1_10)))) <= var_1_10 [L55] var_1_6 = ((((256) < 0 ) ? -(256) : (256))) VAL [isInitial=1, var_1_10=10000000004, var_1_14=10000000004, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=126, var_1_6=256] [L100] RET step() [L101] CALL, EXPR property() [L90-L91] return (((! var_1_2) ? ((! var_1_2) ? (var_1_1 == ((signed char) (var_1_3 + -32))) : (var_1_1 == ((signed char) (var_1_4 - var_1_5)))) : 1) && (var_1_2 ? (((var_1_7 - ((((var_1_10) < 0 ) ? -(var_1_10) : (var_1_10)))) <= var_1_10) ? (var_1_6 == ((unsigned short int) ((((256) < 0 ) ? -(256) : (256))))) : (var_1_6 == ((unsigned short int) var_1_5))) : (var_1_6 == ((unsigned short int) 16)))) && ((var_1_7 < (var_1_11 - var_1_12)) ? (((var_1_7 / 7.2) <= var_1_11) ? (var_1_10 == ((double) (var_1_13 - var_1_14))) : (var_1_10 == ((double) var_1_13))) : (var_1_10 == ((double) var_1_14))) ; [L101] RET, EXPR property() [L101] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=10000000004, var_1_14=10000000004, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=126, var_1_6=256] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=10000000004, var_1_14=10000000004, var_1_1=-16, var_1_2=1, var_1_3=31, var_1_4=0, var_1_5=126, var_1_6=256] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 13, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 150 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17 IncrementalHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 106 mSDtfsCounter, 17 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=2, InterpolantAutomatonStates: 5, 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, 2 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 247 NumberOfCodeBlocks, 247 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 162 ConstructedInterpolants, 0 QuantifiedInterpolants, 176 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 624/624 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 [2023-11-26 11:45:30,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/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/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-79.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme --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 087e6cd2d99060c16318d94e67eed026c21e542402823046e52131085ccd5550 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:45:33,817 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:45:33,963 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-26 11:45:33,976 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:45:33,977 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:45:34,037 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:45:34,038 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:45:34,039 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:45:34,040 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:45:34,048 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:45:34,049 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:45:34,050 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:45:34,050 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:45:34,053 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:45:34,053 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:45:34,054 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:45:34,055 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:45:34,055 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:45:34,056 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:45:34,057 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:45:34,058 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:45:34,058 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:45:34,059 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:45:34,059 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:45:34,060 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 11:45:34,060 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 11:45:34,061 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:45:34,061 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:45:34,061 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:45:34,062 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:45:34,064 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:45:34,064 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:45:34,065 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:45:34,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:45:34,066 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:45:34,066 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:45:34,067 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:45:34,068 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 11:45:34,068 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 11:45:34,069 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:45:34,069 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:45:34,069 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:45:34,070 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:45:34,070 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:45:34,071 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 11:45:34,071 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 087e6cd2d99060c16318d94e67eed026c21e542402823046e52131085ccd5550 [2023-11-26 11:45:34,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:45:34,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:45:34,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:45:34,613 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:45:34,614 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:45:34,617 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-79.i [2023-11-26 11:45:37,884 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:45:38,202 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:45:38,203 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-79.i [2023-11-26 11:45:38,216 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/data/e7f0baf32/f0cee708b34340978c904a82d175e18f/FLAGcf47b197c [2023-11-26 11:45:38,237 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/data/e7f0baf32/f0cee708b34340978c904a82d175e18f [2023-11-26 11:45:38,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:45:38,248 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:45:38,251 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:45:38,251 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:45:38,258 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:45:38,259 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:45:38" (1/1) ... [2023-11-26 11:45:38,260 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@724b7354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:38, skipping insertion in model container [2023-11-26 11:45:38,260 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:45:38" (1/1) ... [2023-11-26 11:45:38,303 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:45:38,497 WARN L240 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_000722c2-4791-400a-953e-585c4f79fdb3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-79.i[915,928] [2023-11-26 11:45:38,575 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:45:38,615 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:45:38,644 WARN L240 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_000722c2-4791-400a-953e-585c4f79fdb3/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-79.i[915,928] [2023-11-26 11:45:38,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:45:38,732 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:45:38,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:38 WrapperNode [2023-11-26 11:45:38,733 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:45:38,735 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:45:38,735 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:45:38,736 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:45:38,745 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:38" (1/1) ... [2023-11-26 11:45:38,777 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:38" (1/1) ... [2023-11-26 11:45:38,823 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 105 [2023-11-26 11:45:38,826 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:45:38,827 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:45:38,827 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:45:38,828 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:45:38,841 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:38" (1/1) ... [2023-11-26 11:45:38,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:38" (1/1) ... [2023-11-26 11:45:38,859 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:38" (1/1) ... [2023-11-26 11:45:38,894 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]. [2023-11-26 11:45:38,895 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:38" (1/1) ... [2023-11-26 11:45:38,895 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:38" (1/1) ... [2023-11-26 11:45:38,906 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:38" (1/1) ... [2023-11-26 11:45:38,919 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:38" (1/1) ... [2023-11-26 11:45:38,929 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:38" (1/1) ... [2023-11-26 11:45:38,931 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:38" (1/1) ... [2023-11-26 11:45:38,942 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:45:38,946 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:45:38,947 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:45:38,948 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:45:38,949 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:38" (1/1) ... [2023-11-26 11:45:38,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:45:38,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:38,993 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:39,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:45:39,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:45:39,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-26 11:45:39,048 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:45:39,049 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:45:39,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:45:39,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:45:39,198 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:45:39,201 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:45:54,596 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:45:54,673 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:45:54,673 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:45:54,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:54 BoogieIcfgContainer [2023-11-26 11:45:54,674 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:45:54,677 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:45:54,678 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:45:54,681 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:45:54,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:45:38" (1/3) ... [2023-11-26 11:45:54,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3310fde0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:45:54, skipping insertion in model container [2023-11-26 11:45:54,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:38" (2/3) ... [2023-11-26 11:45:54,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3310fde0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:45:54, skipping insertion in model container [2023-11-26 11:45:54,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:54" (3/3) ... [2023-11-26 11:45:54,685 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-79.i [2023-11-26 11:45:54,707 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:45:54,707 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:45:54,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:45:54,765 INFO L357 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, mHoare=true, 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;@7396f60f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:45:54,765 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:45:54,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-26 11:45:54,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-26 11:45:54,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:54,784 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:54,784 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:54,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:54,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1737405670, now seen corresponding path program 1 times [2023-11-26 11:45:54,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:45:54,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521336708] [2023-11-26 11:45:54,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:54,805 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 [2023-11-26 11:45:54,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:45:54,809 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/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) [2023-11-26 11:45:54,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 11:45:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:56,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 11:45:56,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:56,243 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-11-26 11:45:56,243 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:56,244 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:45:56,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521336708] [2023-11-26 11:45:56,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521336708] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:56,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:56,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:56,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109906606] [2023-11-26 11:45:56,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:56,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:45:56,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:45:56,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:45:56,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:45:56,284 INFO L87 Difference]: Start difference. First operand has 41 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 11:46:01,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-26 11:46:01,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:01,838 INFO L93 Difference]: Finished difference Result 81 states and 136 transitions. [2023-11-26 11:46:01,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:46:01,841 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 82 [2023-11-26 11:46:01,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:01,856 INFO L225 Difference]: With dead ends: 81 [2023-11-26 11:46:01,856 INFO L226 Difference]: Without dead ends: 39 [2023-11-26 11:46:01,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:46:01,867 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:01,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2023-11-26 11:46:01,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-26 11:46:01,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-11-26 11:46:01,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-26 11:46:01,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 57 transitions. [2023-11-26 11:46:01,925 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 57 transitions. Word has length 82 [2023-11-26 11:46:01,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:01,926 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 57 transitions. [2023-11-26 11:46:01,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 11:46:01,927 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 57 transitions. [2023-11-26 11:46:01,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-26 11:46:01,931 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:01,932 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:01,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/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)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:02,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 11:46:02,155 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:02,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:02,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1991446756, now seen corresponding path program 1 times [2023-11-26 11:46:02,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:46:02,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56583581] [2023-11-26 11:46:02,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:02,157 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 [2023-11-26 11:46:02,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:46:02,159 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/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) [2023-11-26 11:46:02,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 11:46:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:03,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:46:03,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:03,440 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-26 11:46:03,440 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:46:03,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:46:03,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56583581] [2023-11-26 11:46:03,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56583581] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:03,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:03,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:46:03,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776868782] [2023-11-26 11:46:03,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:03,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:46:03,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:46:03,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:46:03,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:46:03,447 INFO L87 Difference]: Start difference. First operand 39 states and 57 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-26 11:46:08,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-26 11:46:12,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-26 11:46:16,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-26 11:46:17,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:17,054 INFO L93 Difference]: Finished difference Result 86 states and 125 transitions. [2023-11-26 11:46:17,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:46:17,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 82 [2023-11-26 11:46:17,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:17,058 INFO L225 Difference]: With dead ends: 86 [2023-11-26 11:46:17,058 INFO L226 Difference]: Without dead ends: 48 [2023-11-26 11:46:17,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:46:17,061 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 11 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:17,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 95 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 3 Unknown, 0 Unchecked, 13.6s Time] [2023-11-26 11:46:17,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-11-26 11:46:17,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2023-11-26 11:46:17,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 states have internal predecessors, (36), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-26 11:46:17,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 62 transitions. [2023-11-26 11:46:17,087 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 62 transitions. Word has length 82 [2023-11-26 11:46:17,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:17,090 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 62 transitions. [2023-11-26 11:46:17,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-26 11:46:17,092 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 62 transitions. [2023-11-26 11:46:17,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-26 11:46:17,095 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:17,095 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:17,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/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)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:17,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 11:46:17,309 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:17,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:17,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1614667413, now seen corresponding path program 1 times [2023-11-26 11:46:17,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:46:17,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1441242273] [2023-11-26 11:46:17,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:17,311 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 [2023-11-26 11:46:17,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:46:17,312 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/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) [2023-11-26 11:46:17,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000722c2-4791-400a-953e-585c4f79fdb3/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 11:46:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:18,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 11:46:18,653 INFO L285 TraceCheckSpWp]: Computing forward predicates...