./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-31.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7280598b-a789-4156-a18c-13700470032f/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7280598b-a789-4156-a18c-13700470032f/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7280598b-a789-4156-a18c-13700470032f/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7280598b-a789-4156-a18c-13700470032f/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-31.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7280598b-a789-4156-a18c-13700470032f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7280598b-a789-4156-a18c-13700470032f/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8f77797d2552fe3475312723420efd01b161fc47e64b81a5b4169e51f838e014 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:47:34,729 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:47:34,832 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7280598b-a789-4156-a18c-13700470032f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:47:34,838 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:47:34,839 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:47:34,867 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:47:34,867 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:47:34,868 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:47:34,869 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:47:34,870 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:47:34,871 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:47:34,871 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:47:34,872 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:47:34,872 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:47:34,873 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:47:34,874 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:47:34,874 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:47:34,875 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:47:34,875 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:47:34,876 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:47:34,877 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:47:34,878 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:47:34,878 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:47:34,879 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:47:34,879 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:47:34,880 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:47:34,881 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:47:34,881 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:47:34,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:34,882 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:47:34,883 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:47:34,883 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:47:34,884 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:47:34,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:47:34,885 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:47:34,885 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:47:34,886 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:47:34,886 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:47:34,887 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:47:34,887 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_7280598b-a789-4156-a18c-13700470032f/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7280598b-a789-4156-a18c-13700470032f/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f77797d2552fe3475312723420efd01b161fc47e64b81a5b4169e51f838e014 [2023-11-19 07:47:35,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:47:35,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:47:35,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:47:35,183 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:47:35,184 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:47:35,185 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7280598b-a789-4156-a18c-13700470032f/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-31.i [2023-11-19 07:47:38,286 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:47:38,547 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:47:38,548 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7280598b-a789-4156-a18c-13700470032f/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-31.i [2023-11-19 07:47:38,560 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7280598b-a789-4156-a18c-13700470032f/bin/uautomizer-verify-uCwYo4JHxu/data/f64a7b17a/71646fbdc1894f3ba195a45fff7c5e7b/FLAG237c89521 [2023-11-19 07:47:38,574 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7280598b-a789-4156-a18c-13700470032f/bin/uautomizer-verify-uCwYo4JHxu/data/f64a7b17a/71646fbdc1894f3ba195a45fff7c5e7b [2023-11-19 07:47:38,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:47:38,579 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:47:38,580 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:38,580 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:47:38,586 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:47:38,586 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:38" (1/1) ... [2023-11-19 07:47:38,588 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f2c7af8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:38, skipping insertion in model container [2023-11-19 07:47:38,588 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:38" (1/1) ... [2023-11-19 07:47:38,631 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:47:38,776 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_7280598b-a789-4156-a18c-13700470032f/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-31.i[919,932] [2023-11-19 07:47:38,885 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:38,898 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:47:38,911 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_7280598b-a789-4156-a18c-13700470032f/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-31.i[919,932] [2023-11-19 07:47:38,962 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:38,980 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:47:38,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:38 WrapperNode [2023-11-19 07:47:38,981 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:38,982 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:38,982 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:47:38,983 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:47:38,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:38" (1/1) ... [2023-11-19 07:47:39,005 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:38" (1/1) ... [2023-11-19 07:47:39,066 INFO L138 Inliner]: procedures = 26, calls = 67, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 289 [2023-11-19 07:47:39,067 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:39,067 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:47:39,068 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:47:39,068 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:47:39,077 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:38" (1/1) ... [2023-11-19 07:47:39,078 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:38" (1/1) ... [2023-11-19 07:47:39,089 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:38" (1/1) ... [2023-11-19 07:47:39,089 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:38" (1/1) ... [2023-11-19 07:47:39,108 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:38" (1/1) ... [2023-11-19 07:47:39,112 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:38" (1/1) ... [2023-11-19 07:47:39,118 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:38" (1/1) ... [2023-11-19 07:47:39,121 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:38" (1/1) ... [2023-11-19 07:47:39,129 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:47:39,130 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:47:39,130 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:47:39,130 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:47:39,131 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:38" (1/1) ... [2023-11-19 07:47:39,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:39,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7280598b-a789-4156-a18c-13700470032f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:39,181 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7280598b-a789-4156-a18c-13700470032f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:47:39,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7280598b-a789-4156-a18c-13700470032f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:47:39,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:47:39,228 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:47:39,228 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:47:39,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:47:39,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:47:39,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:47:39,330 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:47:39,333 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:47:40,042 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:47:40,059 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:47:40,059 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:47:40,064 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:40 BoogieIcfgContainer [2023-11-19 07:47:40,064 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:47:40,067 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:47:40,067 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:47:40,071 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:47:40,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:47:38" (1/3) ... [2023-11-19 07:47:40,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c47a552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:40, skipping insertion in model container [2023-11-19 07:47:40,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:38" (2/3) ... [2023-11-19 07:47:40,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c47a552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:40, skipping insertion in model container [2023-11-19 07:47:40,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:40" (3/3) ... [2023-11-19 07:47:40,074 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-cn_file-31.i [2023-11-19 07:47:40,094 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:47:40,095 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:47:40,157 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:47:40,164 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2c8a49c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:47:40,164 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:47:40,168 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 71 states have (on average 1.380281690140845) internal successors, (98), 72 states have internal predecessors, (98), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-19 07:47:40,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2023-11-19 07:47:40,192 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:40,193 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:40,193 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:40,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:40,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1679928446, now seen corresponding path program 1 times [2023-11-19 07:47:40,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:40,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420310849] [2023-11-19 07:47:40,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:40,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:40,484 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:40,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [212400977] [2023-11-19 07:47:40,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:40,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:40,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7280598b-a789-4156-a18c-13700470032f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:40,488 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7280598b-a789-4156-a18c-13700470032f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:40,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7280598b-a789-4156-a18c-13700470032f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:47:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:40,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:47:40,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:41,847 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 1985 proven. 33 refuted. 0 times theorem prover too weak. 3706 trivial. 0 not checked. [2023-11-19 07:47:41,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:42,714 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 126 proven. 33 refuted. 0 times theorem prover too weak. 5565 trivial. 0 not checked. [2023-11-19 07:47:42,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:42,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420310849] [2023-11-19 07:47:42,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:42,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212400977] [2023-11-19 07:47:42,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212400977] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:42,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:47:42,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-11-19 07:47:42,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868886167] [2023-11-19 07:47:42,723 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:42,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:47:42,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:42,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:47:42,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:47:42,780 INFO L87 Difference]: Start difference. First operand has 128 states, 71 states have (on average 1.380281690140845) internal successors, (98), 72 states have internal predecessors, (98), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 12 states, 12 states have (on average 8.75) internal successors, (105), 12 states have internal predecessors, (105), 4 states have call successors, (108), 3 states have call predecessors, (108), 5 states have return successors, (108), 4 states have call predecessors, (108), 4 states have call successors, (108) [2023-11-19 07:47:44,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:44,243 INFO L93 Difference]: Finished difference Result 449 states and 879 transitions. [2023-11-19 07:47:44,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:47:44,246 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 12 states have internal predecessors, (105), 4 states have call successors, (108), 3 states have call predecessors, (108), 5 states have return successors, (108), 4 states have call predecessors, (108), 4 states have call successors, (108) Word has length 323 [2023-11-19 07:47:44,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:44,274 INFO L225 Difference]: With dead ends: 449 [2023-11-19 07:47:44,275 INFO L226 Difference]: Without dead ends: 324 [2023-11-19 07:47:44,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 634 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:47:44,289 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 255 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:44,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 751 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 07:47:44,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-11-19 07:47:44,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 247. [2023-11-19 07:47:44,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 135 states have (on average 1.325925925925926) internal successors, (179), 135 states have internal predecessors, (179), 108 states have call successors, (108), 3 states have call predecessors, (108), 3 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2023-11-19 07:47:44,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 395 transitions. [2023-11-19 07:47:44,445 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 395 transitions. Word has length 323 [2023-11-19 07:47:44,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:44,448 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 395 transitions. [2023-11-19 07:47:44,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 12 states have internal predecessors, (105), 4 states have call successors, (108), 3 states have call predecessors, (108), 5 states have return successors, (108), 4 states have call predecessors, (108), 4 states have call successors, (108) [2023-11-19 07:47:44,448 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 395 transitions. [2023-11-19 07:47:44,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2023-11-19 07:47:44,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:44,457 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:44,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7280598b-a789-4156-a18c-13700470032f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:44,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7280598b-a789-4156-a18c-13700470032f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:47:44,666 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:44,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:44,666 INFO L85 PathProgramCache]: Analyzing trace with hash 91580544, now seen corresponding path program 1 times [2023-11-19 07:47:44,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:44,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126959754] [2023-11-19 07:47:44,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:44,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:44,786 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:44,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [47098472] [2023-11-19 07:47:44,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:44,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:44,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7280598b-a789-4156-a18c-13700470032f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:44,789 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7280598b-a789-4156-a18c-13700470032f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:44,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7280598b-a789-4156-a18c-13700470032f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:47:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:45,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-19 07:47:45,043 INFO L285 TraceCheckSpWp]: Computing forward predicates...