./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-42.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_e7cfaefb-4bd7-4a7a-b7a0-e3aa856c8340/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7cfaefb-4bd7-4a7a-b7a0-e3aa856c8340/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7cfaefb-4bd7-4a7a-b7a0-e3aa856c8340/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7cfaefb-4bd7-4a7a-b7a0-e3aa856c8340/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-42.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7cfaefb-4bd7-4a7a-b7a0-e3aa856c8340/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7cfaefb-4bd7-4a7a-b7a0-e3aa856c8340/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 fe48ed16d68df0fc4fa3c4280535a457e51f3caf84063e0c55d9c1da17a02641 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:57:37,773 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:57:37,909 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7cfaefb-4bd7-4a7a-b7a0-e3aa856c8340/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 21:57:37,918 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:57:37,919 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:57:37,964 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:57:37,965 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:57:37,966 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:57:37,967 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:57:37,973 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:57:37,974 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:57:37,974 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:57:37,975 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:57:37,977 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:57:37,977 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:57:37,978 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:57:37,978 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:57:37,979 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:57:37,979 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:57:37,980 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:57:37,981 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:57:37,982 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:57:37,982 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:57:37,983 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:57:37,983 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:57:37,984 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:57:37,984 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:57:37,985 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:57:37,985 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:57:37,986 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:57:37,986 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:57:37,987 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:57:37,987 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:57:37,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:57:37,988 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:57:37,988 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:57:37,988 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:57:37,989 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:57:37,989 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:57:37,989 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_e7cfaefb-4bd7-4a7a-b7a0-e3aa856c8340/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7cfaefb-4bd7-4a7a-b7a0-e3aa856c8340/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe48ed16d68df0fc4fa3c4280535a457e51f3caf84063e0c55d9c1da17a02641 [2023-11-06 21:57:38,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:57:38,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:57:38,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:57:38,328 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:57:38,329 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:57:38,331 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7cfaefb-4bd7-4a7a-b7a0-e3aa856c8340/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-42.i [2023-11-06 21:57:41,898 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:57:42,154 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:57:42,155 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7cfaefb-4bd7-4a7a-b7a0-e3aa856c8340/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-42.i [2023-11-06 21:57:42,167 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7cfaefb-4bd7-4a7a-b7a0-e3aa856c8340/bin/uautomizer-verify-WvqO1wxjHP/data/f8864ee17/fef8283568f54070b4327e37bf3cc0a7/FLAGbea13f49b [2023-11-06 21:57:42,193 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7cfaefb-4bd7-4a7a-b7a0-e3aa856c8340/bin/uautomizer-verify-WvqO1wxjHP/data/f8864ee17/fef8283568f54070b4327e37bf3cc0a7 [2023-11-06 21:57:42,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:57:42,198 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:57:42,200 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:57:42,200 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:57:42,209 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:57:42,210 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:42" (1/1) ... [2023-11-06 21:57:42,211 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@417614f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:42, skipping insertion in model container [2023-11-06 21:57:42,211 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:42" (1/1) ... [2023-11-06 21:57:42,261 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:57:42,438 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_e7cfaefb-4bd7-4a7a-b7a0-e3aa856c8340/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-42.i[915,928] [2023-11-06 21:57:42,486 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:57:42,500 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:57:42,515 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_e7cfaefb-4bd7-4a7a-b7a0-e3aa856c8340/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-42.i[915,928] [2023-11-06 21:57:42,535 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:57:42,555 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:57:42,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:42 WrapperNode [2023-11-06 21:57:42,556 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:57:42,558 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:57:42,558 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:57:42,558 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:57:42,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:42" (1/1) ... [2023-11-06 21:57:42,579 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:42" (1/1) ... [2023-11-06 21:57:42,620 INFO L138 Inliner]: procedures = 26, calls = 28, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 102 [2023-11-06 21:57:42,621 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:57:42,621 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:57:42,622 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:57:42,622 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:57:42,633 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:42" (1/1) ... [2023-11-06 21:57:42,634 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:42" (1/1) ... [2023-11-06 21:57:42,637 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:42" (1/1) ... [2023-11-06 21:57:42,637 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:42" (1/1) ... [2023-11-06 21:57:42,647 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:42" (1/1) ... [2023-11-06 21:57:42,651 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:42" (1/1) ... [2023-11-06 21:57:42,654 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:42" (1/1) ... [2023-11-06 21:57:42,656 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:42" (1/1) ... [2023-11-06 21:57:42,660 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:57:42,661 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:57:42,661 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:57:42,662 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:57:42,663 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:42" (1/1) ... [2023-11-06 21:57:42,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:57:42,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7cfaefb-4bd7-4a7a-b7a0-e3aa856c8340/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:57:42,737 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7cfaefb-4bd7-4a7a-b7a0-e3aa856c8340/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:57:42,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7cfaefb-4bd7-4a7a-b7a0-e3aa856c8340/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:57:42,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:57:42,782 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 21:57:42,782 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 21:57:42,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:57:42,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:57:42,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:57:42,886 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:57:42,888 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:57:43,336 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:57:43,345 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:57:43,345 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 21:57:43,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:43 BoogieIcfgContainer [2023-11-06 21:57:43,348 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:57:43,352 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:57:43,353 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:57:43,357 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:57:43,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:57:42" (1/3) ... [2023-11-06 21:57:43,358 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225a081d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:43, skipping insertion in model container [2023-11-06 21:57:43,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:42" (2/3) ... [2023-11-06 21:57:43,359 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225a081d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:43, skipping insertion in model container [2023-11-06 21:57:43,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:43" (3/3) ... [2023-11-06 21:57:43,361 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-42.i [2023-11-06 21:57:43,386 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:57:43,386 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:57:43,446 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:57:43,455 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=LoopsAndPotentialCycles, 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;@596a641c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:57:43,456 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 21:57:43,460 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 30 states have (on average 1.3) internal successors, (39), 31 states have internal predecessors, (39), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 21:57:43,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-06 21:57:43,477 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:43,478 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:43,478 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:57:43,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:43,486 INFO L85 PathProgramCache]: Analyzing trace with hash 350031807, now seen corresponding path program 1 times [2023-11-06 21:57:43,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:43,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581664381] [2023-11-06 21:57:43,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:43,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:43,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:57:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 21:57:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 21:57:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 21:57:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 21:57:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 21:57:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-06 21:57:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-06 21:57:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 21:57:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-06 21:57:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-06 21:57:43,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-06 21:57:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-06 21:57:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-06 21:57:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-06 21:57:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,930 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 21:57:43,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:43,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581664381] [2023-11-06 21:57:43,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581664381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:43,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:43,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:57:43,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779606522] [2023-11-06 21:57:43,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:43,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 21:57:43,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:43,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 21:57:43,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:57:43,983 INFO L87 Difference]: Start difference. First operand has 48 states, 30 states have (on average 1.3) internal successors, (39), 31 states have internal predecessors, (39), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-06 21:57:44,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:44,022 INFO L93 Difference]: Finished difference Result 89 states and 147 transitions. [2023-11-06 21:57:44,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 21:57:44,025 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 97 [2023-11-06 21:57:44,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:44,035 INFO L225 Difference]: With dead ends: 89 [2023-11-06 21:57:44,035 INFO L226 Difference]: Without dead ends: 44 [2023-11-06 21:57:44,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:57:44,053 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:44,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:57:44,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-06 21:57:44,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-11-06 21:57:44,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 21:57:44,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 62 transitions. [2023-11-06 21:57:44,132 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 62 transitions. Word has length 97 [2023-11-06 21:57:44,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:44,132 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 62 transitions. [2023-11-06 21:57:44,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-06 21:57:44,133 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 62 transitions. [2023-11-06 21:57:44,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-06 21:57:44,140 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:44,141 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:44,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:57:44,142 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:57:44,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:44,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1682017665, now seen corresponding path program 1 times [2023-11-06 21:57:44,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:44,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445542541] [2023-11-06 21:57:44,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:44,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:57:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 21:57:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 21:57:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 21:57:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 21:57:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 21:57:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-06 21:57:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-06 21:57:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 21:57:44,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-06 21:57:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-06 21:57:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-06 21:57:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-06 21:57:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-06 21:57:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-06 21:57:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,805 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 21:57:44,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:44,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445542541] [2023-11-06 21:57:44,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445542541] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:44,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:44,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:57:44,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380444409] [2023-11-06 21:57:44,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:44,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:57:44,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:44,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:57:44,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:57:44,812 INFO L87 Difference]: Start difference. First operand 44 states and 62 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 21:57:44,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:44,885 INFO L93 Difference]: Finished difference Result 116 states and 167 transitions. [2023-11-06 21:57:44,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:57:44,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 97 [2023-11-06 21:57:44,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:44,889 INFO L225 Difference]: With dead ends: 116 [2023-11-06 21:57:44,890 INFO L226 Difference]: Without dead ends: 75 [2023-11-06 21:57:44,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:57:44,894 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 56 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:44,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 148 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:57:44,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-06 21:57:44,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 44. [2023-11-06 21:57:44,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 21:57:44,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 61 transitions. [2023-11-06 21:57:44,920 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 61 transitions. Word has length 97 [2023-11-06 21:57:44,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:44,922 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 61 transitions. [2023-11-06 21:57:44,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 21:57:44,923 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 61 transitions. [2023-11-06 21:57:44,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-06 21:57:44,929 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:44,929 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:44,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:57:44,930 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:57:44,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:44,931 INFO L85 PathProgramCache]: Analyzing trace with hash -837942269, now seen corresponding path program 1 times [2023-11-06 21:57:44,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:44,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964407109] [2023-11-06 21:57:44,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:44,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:50,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 21:57:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:50,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 21:57:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:50,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 21:57:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:50,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 21:57:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:50,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 21:57:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:50,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 21:57:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:50,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-06 21:57:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:50,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-06 21:57:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:50,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 21:57:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:50,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-06 21:57:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:50,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-06 21:57:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:50,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-06 21:57:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:50,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-06 21:57:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:50,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-06 21:57:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:50,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-06 21:57:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:50,547 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 30 proven. 102 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-11-06 21:57:50,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:50,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964407109] [2023-11-06 21:57:50,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964407109] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:57:50,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006315546] [2023-11-06 21:57:50,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:50,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:57:50,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7cfaefb-4bd7-4a7a-b7a0-e3aa856c8340/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:57:50,559 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7cfaefb-4bd7-4a7a-b7a0-e3aa856c8340/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:57:50,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7cfaefb-4bd7-4a7a-b7a0-e3aa856c8340/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:57:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:50,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-06 21:57:50,862 INFO L285 TraceCheckSpWp]: Computing forward predicates...