./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-31.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_18678ce8-32be-44f1-9d37-e0e18f4768d9/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18678ce8-32be-44f1-9d37-e0e18f4768d9/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_18678ce8-32be-44f1-9d37-e0e18f4768d9/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18678ce8-32be-44f1-9d37-e0e18f4768d9/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-31.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18678ce8-32be-44f1-9d37-e0e18f4768d9/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_18678ce8-32be-44f1-9d37-e0e18f4768d9/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 5ff9df1980cb7273f3fa10307de3c5cadee6843da6e01ca90c69648d1790f06c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:28:50,348 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:28:50,476 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18678ce8-32be-44f1-9d37-e0e18f4768d9/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:28:50,488 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:28:50,490 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:28:50,533 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:28:50,535 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:28:50,536 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:28:50,537 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:28:50,543 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:28:50,545 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:28:50,545 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:28:50,546 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:28:50,548 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:28:50,548 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:28:50,549 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:28:50,550 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:28:50,550 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:28:50,551 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:28:50,551 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:28:50,552 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:28:50,552 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:28:50,553 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:28:50,553 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:28:50,554 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:28:50,555 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:28:50,555 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:28:50,556 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:28:50,556 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:28:50,557 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:28:50,558 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:28:50,559 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:28:50,559 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:28:50,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:28:50,560 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:28:50,560 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:28:50,560 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:28:50,561 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:28:50,561 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:28:50,561 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_18678ce8-32be-44f1-9d37-e0e18f4768d9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18678ce8-32be-44f1-9d37-e0e18f4768d9/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ff9df1980cb7273f3fa10307de3c5cadee6843da6e01ca90c69648d1790f06c [2023-11-06 22:28:50,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:28:50,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:28:50,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:28:50,947 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:28:50,947 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:28:50,949 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18678ce8-32be-44f1-9d37-e0e18f4768d9/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-31.i [2023-11-06 22:28:54,205 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:28:54,514 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:28:54,515 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18678ce8-32be-44f1-9d37-e0e18f4768d9/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-31.i [2023-11-06 22:28:54,539 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18678ce8-32be-44f1-9d37-e0e18f4768d9/bin/uautomizer-verify-WvqO1wxjHP/data/a6fd0bc68/afe899dbe85c49a68624e5b5f809f206/FLAG03c62c1f4 [2023-11-06 22:28:54,558 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18678ce8-32be-44f1-9d37-e0e18f4768d9/bin/uautomizer-verify-WvqO1wxjHP/data/a6fd0bc68/afe899dbe85c49a68624e5b5f809f206 [2023-11-06 22:28:54,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:28:54,563 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:28:54,564 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:28:54,565 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:28:54,578 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:28:54,579 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:28:54" (1/1) ... [2023-11-06 22:28:54,580 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72e7a677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:54, skipping insertion in model container [2023-11-06 22:28:54,581 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:28:54" (1/1) ... [2023-11-06 22:28:54,644 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:28:54,838 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_18678ce8-32be-44f1-9d37-e0e18f4768d9/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-31.i[919,932] [2023-11-06 22:28:54,943 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:28:54,962 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:28:54,977 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_18678ce8-32be-44f1-9d37-e0e18f4768d9/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-31.i[919,932] [2023-11-06 22:28:55,036 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:28:55,059 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:28:55,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:55 WrapperNode [2023-11-06 22:28:55,060 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:28:55,062 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:28:55,062 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:28:55,062 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:28:55,072 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:55" (1/1) ... [2023-11-06 22:28:55,090 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:55" (1/1) ... [2023-11-06 22:28:55,158 INFO L138 Inliner]: procedures = 26, calls = 67, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 289 [2023-11-06 22:28:55,159 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:28:55,160 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:28:55,160 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:28:55,160 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:28:55,172 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:55" (1/1) ... [2023-11-06 22:28:55,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:55" (1/1) ... [2023-11-06 22:28:55,179 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:55" (1/1) ... [2023-11-06 22:28:55,179 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:55" (1/1) ... [2023-11-06 22:28:55,221 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:55" (1/1) ... [2023-11-06 22:28:55,226 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:55" (1/1) ... [2023-11-06 22:28:55,242 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:55" (1/1) ... [2023-11-06 22:28:55,246 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:55" (1/1) ... [2023-11-06 22:28:55,262 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:28:55,264 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:28:55,264 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:28:55,265 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:28:55,266 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:55" (1/1) ... [2023-11-06 22:28:55,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:28:55,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18678ce8-32be-44f1-9d37-e0e18f4768d9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:28:55,318 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18678ce8-32be-44f1-9d37-e0e18f4768d9/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:28:55,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18678ce8-32be-44f1-9d37-e0e18f4768d9/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:28:55,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:28:55,378 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:28:55,379 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:28:55,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:28:55,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:28:55,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:28:55,546 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:28:55,548 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:28:56,381 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:28:56,390 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:28:56,391 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:28:56,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:28:56 BoogieIcfgContainer [2023-11-06 22:28:56,394 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:28:56,404 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:28:56,404 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:28:56,408 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:28:56,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:28:54" (1/3) ... [2023-11-06 22:28:56,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6197432a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:28:56, skipping insertion in model container [2023-11-06 22:28:56,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:55" (2/3) ... [2023-11-06 22:28:56,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6197432a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:28:56, skipping insertion in model container [2023-11-06 22:28:56,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:28:56" (3/3) ... [2023-11-06 22:28:56,414 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-cn_file-31.i [2023-11-06 22:28:56,464 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:28:56,464 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:28:56,529 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:28:56,537 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;@31a4766f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:28:56,538 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:28:56,544 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) [2023-11-06 22:28:56,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2023-11-06 22:28:56,597 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:56,598 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] [2023-11-06 22:28:56,598 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:28:56,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:56,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1903191609, now seen corresponding path program 1 times [2023-11-06 22:28:56,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:56,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566913560] [2023-11-06 22:28:56,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:56,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:56,978 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:28:56,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [829769174] [2023-11-06 22:28:56,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:56,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:28:56,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18678ce8-32be-44f1-9d37-e0e18f4768d9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:28:56,981 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18678ce8-32be-44f1-9d37-e0e18f4768d9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:28:56,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18678ce8-32be-44f1-9d37-e0e18f4768d9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:28:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:57,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:28:57,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:28:58,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 2345 proven. 33 refuted. 0 times theorem prover too weak. 3346 trivial. 0 not checked. [2023-11-06 22:28:58,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:28:59,808 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 126 proven. 33 refuted. 0 times theorem prover too weak. 5565 trivial. 0 not checked. [2023-11-06 22:28:59,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:59,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566913560] [2023-11-06 22:28:59,809 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:28:59,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829769174] [2023-11-06 22:28:59,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829769174] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:28:59,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:28:59,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-11-06 22:28:59,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309924667] [2023-11-06 22:28:59,815 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:28:59,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:28:59,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:59,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:28:59,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:28:59,880 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 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 14 states have internal predecessors, (118), 6 states have call successors, (108), 4 states have call predecessors, (108), 6 states have return successors, (108), 6 states have call predecessors, (108), 6 states have call successors, (108) [2023-11-06 22:29:02,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:29:02,476 INFO L93 Difference]: Finished difference Result 614 states and 1226 transitions. [2023-11-06 22:29:02,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 22:29:02,479 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 14 states have internal predecessors, (118), 6 states have call successors, (108), 4 states have call predecessors, (108), 6 states have return successors, (108), 6 states have call predecessors, (108), 6 states have call successors, (108) Word has length 323 [2023-11-06 22:29:02,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:29:02,516 INFO L225 Difference]: With dead ends: 614 [2023-11-06 22:29:02,516 INFO L226 Difference]: Without dead ends: 489 [2023-11-06 22:29:02,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 633 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=257, Unknown=0, NotChecked=0, Total=420 [2023-11-06 22:29:02,537 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 440 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:29:02,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 878 Invalid, 1489 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [192 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-06 22:29:02,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2023-11-06 22:29:02,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 323. [2023-11-06 22:29:02,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 170 states have (on average 1.2882352941176471) internal successors, (219), 171 states have internal predecessors, (219), 148 states have call successors, (148), 4 states have call predecessors, (148), 4 states have return successors, (148), 147 states have call predecessors, (148), 148 states have call successors, (148) [2023-11-06 22:29:02,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 515 transitions. [2023-11-06 22:29:02,802 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 515 transitions. Word has length 323 [2023-11-06 22:29:02,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:29:02,807 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 515 transitions. [2023-11-06 22:29:02,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 14 states have internal predecessors, (118), 6 states have call successors, (108), 4 states have call predecessors, (108), 6 states have return successors, (108), 6 states have call predecessors, (108), 6 states have call successors, (108) [2023-11-06 22:29:02,807 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 515 transitions. [2023-11-06 22:29:02,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2023-11-06 22:29:02,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:29:02,820 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] [2023-11-06 22:29:02,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18678ce8-32be-44f1-9d37-e0e18f4768d9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:29:03,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18678ce8-32be-44f1-9d37-e0e18f4768d9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 22:29:03,028 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:29:03,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:03,028 INFO L85 PathProgramCache]: Analyzing trace with hash -616768325, now seen corresponding path program 1 times [2023-11-06 22:29:03,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:03,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748406274] [2023-11-06 22:29:03,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:03,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:03,184 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:29:03,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1658195092] [2023-11-06 22:29:03,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:03,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:03,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18678ce8-32be-44f1-9d37-e0e18f4768d9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:03,193 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18678ce8-32be-44f1-9d37-e0e18f4768d9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:03,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18678ce8-32be-44f1-9d37-e0e18f4768d9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:29:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:03,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-06 22:29:03,531 INFO L285 TraceCheckSpWp]: Computing forward predicates...