./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-10.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_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/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_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/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_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/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 acffbf4568185b4df73fbdfca312807b0d1acfe4982bda3fcfc32319476145af --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:36:18,115 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:36:18,232 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:36:18,241 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:36:18,242 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:36:18,281 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:36:18,282 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:36:18,283 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:36:18,284 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:36:18,289 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:36:18,291 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:36:18,291 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:36:18,292 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:36:18,293 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:36:18,294 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:36:18,294 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:36:18,295 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:36:18,295 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:36:18,296 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:36:18,296 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:36:18,297 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:36:18,300 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:36:18,300 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:36:18,301 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:36:18,301 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:36:18,302 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:36:18,302 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:36:18,303 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:36:18,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:36:18,304 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:36:18,305 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:36:18,306 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:36:18,306 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:36:18,306 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:36:18,306 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:36:18,307 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:36:18,307 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:36:18,307 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:36:18,307 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:36:18,308 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_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> acffbf4568185b4df73fbdfca312807b0d1acfe4982bda3fcfc32319476145af [2023-11-06 22:36:18,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:36:18,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:36:18,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:36:18,686 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:36:18,686 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:36:18,688 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-10.i [2023-11-06 22:36:21,944 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:36:22,243 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:36:22,245 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-10.i [2023-11-06 22:36:22,259 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/bin/uautomizer-verify-WvqO1wxjHP/data/b09cf9df1/81d111d279e540e68b1bd907564d41c6/FLAGa928bebbd [2023-11-06 22:36:22,277 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/bin/uautomizer-verify-WvqO1wxjHP/data/b09cf9df1/81d111d279e540e68b1bd907564d41c6 [2023-11-06 22:36:22,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:36:22,284 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:36:22,287 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:36:22,288 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:36:22,293 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:36:22,294 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:36:22" (1/1) ... [2023-11-06 22:36:22,295 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a388b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:22, skipping insertion in model container [2023-11-06 22:36:22,295 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:36:22" (1/1) ... [2023-11-06 22:36:22,341 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:36:22,490 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_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-10.i[919,932] [2023-11-06 22:36:22,616 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:36:22,643 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:36:22,659 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_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-10.i[919,932] [2023-11-06 22:36:22,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:36:22,725 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:36:22,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:22 WrapperNode [2023-11-06 22:36:22,726 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:36:22,727 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:36:22,728 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:36:22,728 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:36:22,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:22" (1/1) ... [2023-11-06 22:36:22,750 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:22" (1/1) ... [2023-11-06 22:36:22,832 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 314 [2023-11-06 22:36:22,832 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:36:22,833 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:36:22,833 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:36:22,833 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:36:22,840 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:22" (1/1) ... [2023-11-06 22:36:22,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:22" (1/1) ... [2023-11-06 22:36:22,846 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:22" (1/1) ... [2023-11-06 22:36:22,847 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:22" (1/1) ... [2023-11-06 22:36:22,886 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:22" (1/1) ... [2023-11-06 22:36:22,892 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:22" (1/1) ... [2023-11-06 22:36:22,897 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:22" (1/1) ... [2023-11-06 22:36:22,907 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:22" (1/1) ... [2023-11-06 22:36:22,914 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:36:22,920 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:36:22,920 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:36:22,920 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:36:22,922 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:22" (1/1) ... [2023-11-06 22:36:22,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:36:22,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:36:22,966 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:36:23,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:36:23,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:36:23,009 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:36:23,009 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:36:23,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:36:23,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:36:23,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:36:23,131 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:36:23,133 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:36:23,926 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:36:23,935 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:36:23,935 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:36:23,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:36:23 BoogieIcfgContainer [2023-11-06 22:36:23,950 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:36:23,953 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:36:23,953 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:36:23,957 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:36:23,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:36:22" (1/3) ... [2023-11-06 22:36:23,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d56319e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:36:23, skipping insertion in model container [2023-11-06 22:36:23,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:22" (2/3) ... [2023-11-06 22:36:23,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d56319e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:36:23, skipping insertion in model container [2023-11-06 22:36:23,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:36:23" (3/3) ... [2023-11-06 22:36:23,960 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-10.i [2023-11-06 22:36:23,982 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:36:23,982 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:36:24,037 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:36:24,044 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;@9b360c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:36:24,044 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:36:24,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 130 states, 85 states have (on average 1.4705882352941178) internal successors, (125), 86 states have internal predecessors, (125), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-06 22:36:24,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-11-06 22:36:24,077 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:36:24,078 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:24,079 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:36:24,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:24,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1021944961, now seen corresponding path program 1 times [2023-11-06 22:36:24,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:24,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116022620] [2023-11-06 22:36:24,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:24,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:24,405 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:36:24,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1557158201] [2023-11-06 22:36:24,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:24,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:36:24,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:36:24,410 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:36:24,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:36:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:24,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:36:24,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:36:25,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2023-11-06 22:36:25,286 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:36:25,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:25,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116022620] [2023-11-06 22:36:25,287 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:36:25,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557158201] [2023-11-06 22:36:25,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557158201] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:36:25,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:36:25,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:36:25,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019803246] [2023-11-06 22:36:25,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:36:25,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:36:25,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:25,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:36:25,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:36:25,413 INFO L87 Difference]: Start difference. First operand has 130 states, 85 states have (on average 1.4705882352941178) internal successors, (125), 86 states have internal predecessors, (125), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-11-06 22:36:25,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:36:25,837 INFO L93 Difference]: Finished difference Result 377 states and 702 transitions. [2023-11-06 22:36:25,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:36:25,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 262 [2023-11-06 22:36:25,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:36:25,855 INFO L225 Difference]: With dead ends: 377 [2023-11-06 22:36:25,855 INFO L226 Difference]: Without dead ends: 250 [2023-11-06 22:36:25,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:36:25,864 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 189 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:36:25,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 774 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:36:25,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-11-06 22:36:25,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 198. [2023-11-06 22:36:25,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 111 states have (on average 1.3243243243243243) internal successors, (147), 111 states have internal predecessors, (147), 84 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-11-06 22:36:25,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 315 transitions. [2023-11-06 22:36:25,959 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 315 transitions. Word has length 262 [2023-11-06 22:36:25,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:36:25,961 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 315 transitions. [2023-11-06 22:36:25,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-11-06 22:36:25,962 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 315 transitions. [2023-11-06 22:36:25,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-11-06 22:36:25,969 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:36:25,969 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:25,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:36:26,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 22:36:26,177 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:36:26,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:26,178 INFO L85 PathProgramCache]: Analyzing trace with hash 2049059586, now seen corresponding path program 1 times [2023-11-06 22:36:26,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:26,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631824559] [2023-11-06 22:36:26,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:26,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:26,314 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:36:26,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1120976758] [2023-11-06 22:36:26,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:26,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:36:26,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:36:26,316 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:36:26,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:36:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:26,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-06 22:36:26,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:36:28,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1777 proven. 249 refuted. 0 times theorem prover too weak. 1418 trivial. 0 not checked. [2023-11-06 22:36:28,184 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:36:29,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 102 proven. 258 refuted. 0 times theorem prover too weak. 3084 trivial. 0 not checked. [2023-11-06 22:36:29,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:29,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631824559] [2023-11-06 22:36:29,853 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:36:29,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120976758] [2023-11-06 22:36:29,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120976758] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:36:29,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:36:29,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2023-11-06 22:36:29,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516361067] [2023-11-06 22:36:29,854 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:36:29,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-06 22:36:29,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:29,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-06 22:36:29,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=917, Unknown=0, NotChecked=0, Total=1122 [2023-11-06 22:36:29,864 INFO L87 Difference]: Start difference. First operand 198 states and 315 transitions. Second operand has 34 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 32 states have internal predecessors, (111), 7 states have call successors, (73), 4 states have call predecessors, (73), 9 states have return successors, (74), 7 states have call predecessors, (74), 7 states have call successors, (74) [2023-11-06 22:36:35,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:36:35,956 INFO L93 Difference]: Finished difference Result 1076 states and 1743 transitions. [2023-11-06 22:36:35,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-11-06 22:36:35,958 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 32 states have internal predecessors, (111), 7 states have call successors, (73), 4 states have call predecessors, (73), 9 states have return successors, (74), 7 states have call predecessors, (74), 7 states have call successors, (74) Word has length 263 [2023-11-06 22:36:35,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:36:35,967 INFO L225 Difference]: With dead ends: 1076 [2023-11-06 22:36:35,967 INFO L226 Difference]: Without dead ends: 953 [2023-11-06 22:36:35,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2635 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2350, Invalid=7952, Unknown=0, NotChecked=0, Total=10302 [2023-11-06 22:36:35,974 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 2707 mSDsluCounter, 2513 mSDsCounter, 0 mSdLazyCounter, 1521 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2720 SdHoareTripleChecker+Valid, 2706 SdHoareTripleChecker+Invalid, 1798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 1521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:36:35,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2720 Valid, 2706 Invalid, 1798 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [277 Valid, 1521 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-06 22:36:35,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2023-11-06 22:36:36,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 361. [2023-11-06 22:36:36,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 257 states have (on average 1.416342412451362) internal successors, (364), 259 states have internal predecessors, (364), 90 states have call successors, (90), 13 states have call predecessors, (90), 13 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-06 22:36:36,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 544 transitions. [2023-11-06 22:36:36,092 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 544 transitions. Word has length 263 [2023-11-06 22:36:36,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:36:36,095 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 544 transitions. [2023-11-06 22:36:36,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 32 states have internal predecessors, (111), 7 states have call successors, (73), 4 states have call predecessors, (73), 9 states have return successors, (74), 7 states have call predecessors, (74), 7 states have call successors, (74) [2023-11-06 22:36:36,096 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 544 transitions. [2023-11-06 22:36:36,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-11-06 22:36:36,101 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:36:36,102 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:36,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:36:36,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:36:36,309 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:36:36,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:36,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1435266050, now seen corresponding path program 1 times [2023-11-06 22:36:36,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:36,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609782991] [2023-11-06 22:36:36,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:36,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:36,431 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:36:36,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [649819341] [2023-11-06 22:36:36,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:36,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:36:36,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:36:36,436 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:36:36,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc22479-d1ff-4f5f-a91b-2cc76f2e50df/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:36:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:36,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 78 conjunts are in the unsatisfiable core [2023-11-06 22:36:36,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:36:49,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1752 proven. 540 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2023-11-06 22:36:49,548 INFO L327 TraceCheckSpWp]: Computing backward predicates...