./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-33.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_72ade5f6-b4e1-41ad-8ec4-3b995fcc2aed/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ade5f6-b4e1-41ad-8ec4-3b995fcc2aed/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_72ade5f6-b4e1-41ad-8ec4-3b995fcc2aed/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ade5f6-b4e1-41ad-8ec4-3b995fcc2aed/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-33.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ade5f6-b4e1-41ad-8ec4-3b995fcc2aed/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_72ade5f6-b4e1-41ad-8ec4-3b995fcc2aed/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 3c130d3d9fa60b2bea9bba7adbf819cbc71aada0924db06d5b1e68ee6ed3ed16 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:42:45,033 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:42:45,164 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ade5f6-b4e1-41ad-8ec4-3b995fcc2aed/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:42:45,174 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:42:45,175 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:42:45,216 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:42:45,217 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:42:45,218 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:42:45,219 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:42:45,224 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:42:45,225 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:42:45,226 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:42:45,226 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:42:45,228 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:42:45,229 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:42:45,229 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:42:45,230 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:42:45,230 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:42:45,230 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:42:45,231 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:42:45,231 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:42:45,232 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:42:45,232 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:42:45,233 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:42:45,233 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:42:45,234 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:42:45,235 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:42:45,235 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:42:45,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:42:45,236 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:42:45,237 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:42:45,238 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:42:45,238 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:42:45,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:42:45,239 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:42:45,239 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:42:45,239 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:42:45,239 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:42:45,240 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:42:45,240 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_72ade5f6-b4e1-41ad-8ec4-3b995fcc2aed/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ade5f6-b4e1-41ad-8ec4-3b995fcc2aed/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c130d3d9fa60b2bea9bba7adbf819cbc71aada0924db06d5b1e68ee6ed3ed16 [2023-11-06 22:42:45,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:42:45,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:42:45,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:42:45,631 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:42:45,632 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:42:45,634 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ade5f6-b4e1-41ad-8ec4-3b995fcc2aed/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-33.i [2023-11-06 22:42:48,860 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:42:49,127 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:42:49,128 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ade5f6-b4e1-41ad-8ec4-3b995fcc2aed/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-33.i [2023-11-06 22:42:49,159 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ade5f6-b4e1-41ad-8ec4-3b995fcc2aed/bin/uautomizer-verify-WvqO1wxjHP/data/a02ad6343/69d2492841dc41cb9c207cc5768fb980/FLAG8cbe5f042 [2023-11-06 22:42:49,177 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ade5f6-b4e1-41ad-8ec4-3b995fcc2aed/bin/uautomizer-verify-WvqO1wxjHP/data/a02ad6343/69d2492841dc41cb9c207cc5768fb980 [2023-11-06 22:42:49,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:42:49,182 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:42:49,184 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:42:49,184 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:42:49,195 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:42:49,196 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:42:49" (1/1) ... [2023-11-06 22:42:49,197 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46a8ef48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:49, skipping insertion in model container [2023-11-06 22:42:49,198 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:42:49" (1/1) ... [2023-11-06 22:42:49,237 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:42:49,404 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_72ade5f6-b4e1-41ad-8ec4-3b995fcc2aed/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-33.i[919,932] [2023-11-06 22:42:49,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:42:49,527 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:42:49,542 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_72ade5f6-b4e1-41ad-8ec4-3b995fcc2aed/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-33.i[919,932] [2023-11-06 22:42:49,624 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:42:49,655 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:42:49,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:49 WrapperNode [2023-11-06 22:42:49,656 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:42:49,659 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:42:49,660 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:42:49,665 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:42:49,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:49" (1/1) ... [2023-11-06 22:42:49,692 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:49" (1/1) ... [2023-11-06 22:42:49,756 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 250 [2023-11-06 22:42:49,757 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:42:49,758 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:42:49,758 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:42:49,758 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:42:49,770 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:49" (1/1) ... [2023-11-06 22:42:49,770 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:49" (1/1) ... [2023-11-06 22:42:49,781 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:49" (1/1) ... [2023-11-06 22:42:49,785 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:49" (1/1) ... [2023-11-06 22:42:49,809 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:49" (1/1) ... [2023-11-06 22:42:49,814 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:49" (1/1) ... [2023-11-06 22:42:49,822 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:49" (1/1) ... [2023-11-06 22:42:49,826 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:49" (1/1) ... [2023-11-06 22:42:49,836 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:42:49,837 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:42:49,838 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:42:49,838 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:42:49,847 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:49" (1/1) ... [2023-11-06 22:42:49,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:42:49,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ade5f6-b4e1-41ad-8ec4-3b995fcc2aed/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:49,887 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ade5f6-b4e1-41ad-8ec4-3b995fcc2aed/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:42:49,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ade5f6-b4e1-41ad-8ec4-3b995fcc2aed/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:42:49,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:42:49,937 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:42:49,937 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:42:49,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:42:49,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:42:49,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:42:50,129 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:42:50,133 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:42:50,855 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:42:50,864 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:42:50,864 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:42:50,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:42:50 BoogieIcfgContainer [2023-11-06 22:42:50,867 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:42:50,870 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:42:50,870 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:42:50,874 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:42:50,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:42:49" (1/3) ... [2023-11-06 22:42:50,875 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a409d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:42:50, skipping insertion in model container [2023-11-06 22:42:50,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:49" (2/3) ... [2023-11-06 22:42:50,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a409d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:42:50, skipping insertion in model container [2023-11-06 22:42:50,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:42:50" (3/3) ... [2023-11-06 22:42:50,877 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-cn_file-33.i [2023-11-06 22:42:50,900 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:42:50,901 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:42:51,000 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:42:51,007 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;@73f35d22, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:42:51,007 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:42:51,013 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 65 states have (on average 1.4153846153846155) internal successors, (92), 66 states have internal predecessors, (92), 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 22:42:51,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-11-06 22:42:51,034 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:51,035 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] [2023-11-06 22:42:51,036 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:51,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:51,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1897622717, now seen corresponding path program 1 times [2023-11-06 22:42:51,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:51,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983964917] [2023-11-06 22:42:51,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:51,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:51,310 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:42:51,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [398525143] [2023-11-06 22:42:51,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:51,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:51,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ade5f6-b4e1-41ad-8ec4-3b995fcc2aed/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:51,316 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ade5f6-b4e1-41ad-8ec4-3b995fcc2aed/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:51,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ade5f6-b4e1-41ad-8ec4-3b995fcc2aed/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:42:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:51,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:42:51,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:52,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1491 proven. 36 refuted. 0 times theorem prover too weak. 1917 trivial. 0 not checked. [2023-11-06 22:42:52,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:52,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 87 proven. 36 refuted. 0 times theorem prover too weak. 3321 trivial. 0 not checked. [2023-11-06 22:42:52,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:52,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983964917] [2023-11-06 22:42:52,546 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:42:52,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398525143] [2023-11-06 22:42:52,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398525143] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:42:52,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:42:52,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-06 22:42:52,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281111674] [2023-11-06 22:42:52,552 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:42:52,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:42:52,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:52,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:42:52,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:42:52,599 INFO L87 Difference]: Start difference. First operand has 110 states, 65 states have (on average 1.4153846153846155) internal successors, (92), 66 states have internal predecessors, (92), 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 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 3 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2023-11-06 22:42:53,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:53,199 INFO L93 Difference]: Finished difference Result 217 states and 391 transitions. [2023-11-06 22:42:53,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:42:53,203 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 3 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 257 [2023-11-06 22:42:53,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:53,221 INFO L225 Difference]: With dead ends: 217 [2023-11-06 22:42:53,221 INFO L226 Difference]: Without dead ends: 110 [2023-11-06 22:42:53,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:42:53,237 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 156 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:53,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 256 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:42:53,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-06 22:42:53,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2023-11-06 22:42:53,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 63 states have (on average 1.2698412698412698) internal successors, (80), 63 states have internal predecessors, (80), 42 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-06 22:42:53,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 164 transitions. [2023-11-06 22:42:53,336 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 164 transitions. Word has length 257 [2023-11-06 22:42:53,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:53,339 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 164 transitions. [2023-11-06 22:42:53,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 3 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2023-11-06 22:42:53,340 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 164 transitions. [2023-11-06 22:42:53,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-11-06 22:42:53,348 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:53,348 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] [2023-11-06 22:42:53,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ade5f6-b4e1-41ad-8ec4-3b995fcc2aed/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:42:53,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ade5f6-b4e1-41ad-8ec4-3b995fcc2aed/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 22:42:53,557 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:53,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:53,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1376048701, now seen corresponding path program 1 times [2023-11-06 22:42:53,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:53,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625480344] [2023-11-06 22:42:53,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:53,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:53,659 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:42:53,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1664423074] [2023-11-06 22:42:53,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:53,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:53,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ade5f6-b4e1-41ad-8ec4-3b995fcc2aed/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:53,662 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ade5f6-b4e1-41ad-8ec4-3b995fcc2aed/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:53,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ade5f6-b4e1-41ad-8ec4-3b995fcc2aed/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:42:53,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:53,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-06 22:42:53,936 INFO L285 TraceCheckSpWp]: Computing forward predicates...