./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-58.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_743361ce-6da3-4f41-9544-6f8b40df426d/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743361ce-6da3-4f41-9544-6f8b40df426d/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_743361ce-6da3-4f41-9544-6f8b40df426d/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743361ce-6da3-4f41-9544-6f8b40df426d/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-58.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743361ce-6da3-4f41-9544-6f8b40df426d/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_743361ce-6da3-4f41-9544-6f8b40df426d/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 8bff6c0f8e15029ad0c69d66a327b450bc06692e04fabba5a0800800584ec965 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:56:55,209 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:56:55,273 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743361ce-6da3-4f41-9544-6f8b40df426d/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:56:55,279 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:56:55,280 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:56:55,304 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:56:55,304 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:56:55,305 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:56:55,306 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:56:55,306 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:56:55,307 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:56:55,308 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:56:55,308 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:56:55,309 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:56:55,310 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:56:55,310 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:56:55,311 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:56:55,311 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:56:55,312 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:56:55,312 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:56:55,313 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:56:55,314 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:56:55,314 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:56:55,315 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:56:55,316 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:56:55,316 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:56:55,317 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:56:55,317 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:56:55,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:56:55,319 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:56:55,319 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:56:55,320 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:56:55,320 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:56:55,320 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:56:55,321 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:56:55,321 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:56:55,322 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:56:55,322 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:56:55,323 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:56:55,323 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_743361ce-6da3-4f41-9544-6f8b40df426d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743361ce-6da3-4f41-9544-6f8b40df426d/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8bff6c0f8e15029ad0c69d66a327b450bc06692e04fabba5a0800800584ec965 [2023-11-06 22:56:55,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:56:55,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:56:55,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:56:55,677 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:56:55,678 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:56:55,679 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743361ce-6da3-4f41-9544-6f8b40df426d/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-58.i [2023-11-06 22:56:58,717 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:56:58,953 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:56:58,956 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743361ce-6da3-4f41-9544-6f8b40df426d/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-58.i [2023-11-06 22:56:58,967 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743361ce-6da3-4f41-9544-6f8b40df426d/bin/uautomizer-verify-WvqO1wxjHP/data/b2fe54716/e72409be226e4a8685f3e35b367f102e/FLAG3c0fd4b2f [2023-11-06 22:56:58,984 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743361ce-6da3-4f41-9544-6f8b40df426d/bin/uautomizer-verify-WvqO1wxjHP/data/b2fe54716/e72409be226e4a8685f3e35b367f102e [2023-11-06 22:56:58,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:56:58,994 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:56:58,998 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:56:58,998 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:56:59,004 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:56:59,006 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:56:58" (1/1) ... [2023-11-06 22:56:59,007 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b5f1e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:59, skipping insertion in model container [2023-11-06 22:56:59,007 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:56:58" (1/1) ... [2023-11-06 22:56:59,031 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:56:59,171 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_743361ce-6da3-4f41-9544-6f8b40df426d/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-58.i[915,928] [2023-11-06 22:56:59,217 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:56:59,228 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:56:59,241 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_743361ce-6da3-4f41-9544-6f8b40df426d/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-58.i[915,928] [2023-11-06 22:56:59,263 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:56:59,279 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:56:59,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:59 WrapperNode [2023-11-06 22:56:59,280 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:56:59,281 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:56:59,281 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:56:59,281 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:56:59,289 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:59" (1/1) ... [2023-11-06 22:56:59,299 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:59" (1/1) ... [2023-11-06 22:56:59,336 INFO L138 Inliner]: procedures = 26, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 96 [2023-11-06 22:56:59,336 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:56:59,337 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:56:59,337 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:56:59,337 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:56:59,347 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:59" (1/1) ... [2023-11-06 22:56:59,347 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:59" (1/1) ... [2023-11-06 22:56:59,350 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:59" (1/1) ... [2023-11-06 22:56:59,350 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:59" (1/1) ... [2023-11-06 22:56:59,359 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:59" (1/1) ... [2023-11-06 22:56:59,362 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:59" (1/1) ... [2023-11-06 22:56:59,365 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:59" (1/1) ... [2023-11-06 22:56:59,367 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:59" (1/1) ... [2023-11-06 22:56:59,371 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:56:59,372 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:56:59,372 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:56:59,372 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:56:59,373 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:59" (1/1) ... [2023-11-06 22:56:59,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:56:59,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743361ce-6da3-4f41-9544-6f8b40df426d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:56:59,407 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743361ce-6da3-4f41-9544-6f8b40df426d/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:56:59,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743361ce-6da3-4f41-9544-6f8b40df426d/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:56:59,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:56:59,458 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:56:59,458 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:56:59,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:56:59,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:56:59,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:56:59,550 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:56:59,552 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:56:59,835 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:56:59,842 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:56:59,842 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:56:59,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:56:59 BoogieIcfgContainer [2023-11-06 22:56:59,844 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:56:59,847 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:56:59,847 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:56:59,851 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:56:59,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:56:58" (1/3) ... [2023-11-06 22:56:59,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d18829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:56:59, skipping insertion in model container [2023-11-06 22:56:59,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:59" (2/3) ... [2023-11-06 22:56:59,853 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d18829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:56:59, skipping insertion in model container [2023-11-06 22:56:59,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:56:59" (3/3) ... [2023-11-06 22:56:59,854 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-58.i [2023-11-06 22:56:59,883 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:56:59,884 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:56:59,935 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:56:59,941 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;@694ef8b4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:56:59,941 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:56:59,945 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 31 states have internal predecessors, (41), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-06 22:56:59,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-06 22:56:59,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:59,956 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:56:59,957 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:59,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:59,962 INFO L85 PathProgramCache]: Analyzing trace with hash -576999655, now seen corresponding path program 1 times [2023-11-06 22:56:59,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:59,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145254039] [2023-11-06 22:56:59,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:59,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:00,153 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:00,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1179107848] [2023-11-06 22:57:00,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:00,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:00,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743361ce-6da3-4f41-9544-6f8b40df426d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:00,156 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743361ce-6da3-4f41-9544-6f8b40df426d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:00,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743361ce-6da3-4f41-9544-6f8b40df426d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:57:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:00,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:57:00,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:01,378 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 182 proven. 27 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:57:01,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:01,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:01,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145254039] [2023-11-06 22:57:01,553 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:01,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179107848] [2023-11-06 22:57:01,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179107848] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:57:01,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:57:01,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-06 22:57:01,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472689655] [2023-11-06 22:57:01,564 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:57:01,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:57:01,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:01,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:57:01,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:57:01,615 INFO L87 Difference]: Start difference. First operand has 45 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 31 states have internal predecessors, (41), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-06 22:57:02,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:02,677 INFO L93 Difference]: Finished difference Result 140 states and 233 transitions. [2023-11-06 22:57:02,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:57:02,680 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 81 [2023-11-06 22:57:02,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:02,694 INFO L225 Difference]: With dead ends: 140 [2023-11-06 22:57:02,695 INFO L226 Difference]: Without dead ends: 98 [2023-11-06 22:57:02,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=207, Invalid=663, Unknown=0, NotChecked=0, Total=870 [2023-11-06 22:57:02,704 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 129 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:02,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 227 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:57:02,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-11-06 22:57:02,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 75. [2023-11-06 22:57:02,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 46 states have (on average 1.173913043478261) internal successors, (54), 46 states have internal predecessors, (54), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-06 22:57:02,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 102 transitions. [2023-11-06 22:57:02,776 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 102 transitions. Word has length 81 [2023-11-06 22:57:02,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:02,777 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 102 transitions. [2023-11-06 22:57:02,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-06 22:57:02,778 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 102 transitions. [2023-11-06 22:57:02,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-06 22:57:02,782 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:02,782 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:02,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743361ce-6da3-4f41-9544-6f8b40df426d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:57:02,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743361ce-6da3-4f41-9544-6f8b40df426d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 22:57:02,989 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:02,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:02,990 INFO L85 PathProgramCache]: Analyzing trace with hash 103058715, now seen corresponding path program 1 times [2023-11-06 22:57:02,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:02,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719149736] [2023-11-06 22:57:02,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:02,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:03,062 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:03,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1626955452] [2023-11-06 22:57:03,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:03,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:03,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743361ce-6da3-4f41-9544-6f8b40df426d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:03,083 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743361ce-6da3-4f41-9544-6f8b40df426d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:03,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743361ce-6da3-4f41-9544-6f8b40df426d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:57:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:03,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 22:57:03,273 INFO L285 TraceCheckSpWp]: Computing forward predicates...