./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-54.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_5e73c1a0-f126-4727-9355-29ed413f0ce8/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e73c1a0-f126-4727-9355-29ed413f0ce8/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_5e73c1a0-f126-4727-9355-29ed413f0ce8/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e73c1a0-f126-4727-9355-29ed413f0ce8/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-54.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e73c1a0-f126-4727-9355-29ed413f0ce8/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_5e73c1a0-f126-4727-9355-29ed413f0ce8/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 011eeefd9cffe2be7e7193891aba89325b816eb252a09909cc785439e897f756 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:02:59,339 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:02:59,430 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e73c1a0-f126-4727-9355-29ed413f0ce8/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:02:59,436 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:02:59,437 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:02:59,472 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:02:59,473 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:02:59,474 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:02:59,475 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:02:59,475 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:02:59,477 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:02:59,477 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:02:59,478 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:02:59,479 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:02:59,480 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:02:59,481 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:02:59,481 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:02:59,482 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:02:59,483 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:02:59,484 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:02:59,484 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:02:59,485 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:02:59,486 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:02:59,487 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:02:59,487 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:02:59,488 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:02:59,489 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:02:59,489 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:02:59,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:02:59,491 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:02:59,491 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:02:59,492 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:02:59,492 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:02:59,493 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:02:59,493 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:02:59,494 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:02:59,495 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:02:59,495 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:02:59,496 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:02:59,496 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_5e73c1a0-f126-4727-9355-29ed413f0ce8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e73c1a0-f126-4727-9355-29ed413f0ce8/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 011eeefd9cffe2be7e7193891aba89325b816eb252a09909cc785439e897f756 [2023-11-19 08:02:59,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:02:59,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:02:59,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:02:59,866 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:02:59,866 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:02:59,868 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e73c1a0-f126-4727-9355-29ed413f0ce8/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-54.i [2023-11-19 08:03:03,149 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:03:03,483 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:03:03,484 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e73c1a0-f126-4727-9355-29ed413f0ce8/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-54.i [2023-11-19 08:03:03,497 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e73c1a0-f126-4727-9355-29ed413f0ce8/bin/uautomizer-verify-uCwYo4JHxu/data/80f24783d/f5473b4040ca4a1db51bcde2d7dc53ea/FLAG31c98078c [2023-11-19 08:03:03,515 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e73c1a0-f126-4727-9355-29ed413f0ce8/bin/uautomizer-verify-uCwYo4JHxu/data/80f24783d/f5473b4040ca4a1db51bcde2d7dc53ea [2023-11-19 08:03:03,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:03:03,520 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:03:03,522 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:03:03,522 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:03:03,529 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:03:03,531 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:03:03" (1/1) ... [2023-11-19 08:03:03,532 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e343e15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:03, skipping insertion in model container [2023-11-19 08:03:03,533 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:03:03" (1/1) ... [2023-11-19 08:03:03,576 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:03:03,745 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_5e73c1a0-f126-4727-9355-29ed413f0ce8/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-54.i[919,932] [2023-11-19 08:03:03,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:03:03,851 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:03:03,866 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_5e73c1a0-f126-4727-9355-29ed413f0ce8/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-54.i[919,932] [2023-11-19 08:03:03,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:03:03,943 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:03:03,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:03 WrapperNode [2023-11-19 08:03:03,944 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:03:03,946 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:03:03,946 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:03:03,946 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:03:03,961 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:03" (1/1) ... [2023-11-19 08:03:03,984 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:03" (1/1) ... [2023-11-19 08:03:04,029 INFO L138 Inliner]: procedures = 26, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 195 [2023-11-19 08:03:04,030 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:03:04,031 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:03:04,031 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:03:04,031 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:03:04,043 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:03" (1/1) ... [2023-11-19 08:03:04,043 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:03" (1/1) ... [2023-11-19 08:03:04,046 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:03" (1/1) ... [2023-11-19 08:03:04,047 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:03" (1/1) ... [2023-11-19 08:03:04,058 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:03" (1/1) ... [2023-11-19 08:03:04,070 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:03" (1/1) ... [2023-11-19 08:03:04,084 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:03" (1/1) ... [2023-11-19 08:03:04,087 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:03" (1/1) ... [2023-11-19 08:03:04,092 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:03:04,094 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:03:04,094 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:03:04,094 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:03:04,095 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:03" (1/1) ... [2023-11-19 08:03:04,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:03:04,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e73c1a0-f126-4727-9355-29ed413f0ce8/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:04,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e73c1a0-f126-4727-9355-29ed413f0ce8/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:03:04,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e73c1a0-f126-4727-9355-29ed413f0ce8/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:03:04,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:03:04,224 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 08:03:04,225 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 08:03:04,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:03:04,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:03:04,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:03:04,396 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:03:04,399 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:03:04,909 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:03:04,924 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:03:04,924 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:03:04,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:03:04 BoogieIcfgContainer [2023-11-19 08:03:04,930 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:03:04,933 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:03:04,933 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:03:04,937 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:03:04,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:03:03" (1/3) ... [2023-11-19 08:03:04,938 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358ca7bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:03:04, skipping insertion in model container [2023-11-19 08:03:04,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:03" (2/3) ... [2023-11-19 08:03:04,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358ca7bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:03:04, skipping insertion in model container [2023-11-19 08:03:04,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:03:04" (3/3) ... [2023-11-19 08:03:04,941 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-54.i [2023-11-19 08:03:04,958 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:03:04,959 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:03:05,014 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:03:05,038 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;@3047f0b1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:03:05,039 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:03:05,043 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 55 states have (on average 1.4727272727272727) internal successors, (81), 56 states have internal predecessors, (81), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-19 08:03:05,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-11-19 08:03:05,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:05,063 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:03:05,064 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:05,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:05,070 INFO L85 PathProgramCache]: Analyzing trace with hash -115221311, now seen corresponding path program 1 times [2023-11-19 08:03:05,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:05,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160031746] [2023-11-19 08:03:05,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:05,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:05,324 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:03:05,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1726575661] [2023-11-19 08:03:05,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:05,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:05,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e73c1a0-f126-4727-9355-29ed413f0ce8/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:05,328 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e73c1a0-f126-4727-9355-29ed413f0ce8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:05,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e73c1a0-f126-4727-9355-29ed413f0ce8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:03:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:05,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:03:05,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:05,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-11-19 08:03:05,883 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:05,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:05,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160031746] [2023-11-19 08:03:05,884 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:03:05,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726575661] [2023-11-19 08:03:05,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726575661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:05,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:05,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:03:05,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022320340] [2023-11-19 08:03:05,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:05,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:03:05,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:05,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:03:05,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:03:05,953 INFO L87 Difference]: Start difference. First operand has 83 states, 55 states have (on average 1.4727272727272727) internal successors, (81), 56 states have internal predecessors, (81), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-11-19 08:03:06,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:06,117 INFO L93 Difference]: Finished difference Result 190 states and 333 transitions. [2023-11-19 08:03:06,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:03:06,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 167 [2023-11-19 08:03:06,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:06,143 INFO L225 Difference]: With dead ends: 190 [2023-11-19 08:03:06,145 INFO L226 Difference]: Without dead ends: 110 [2023-11-19 08:03:06,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:03:06,158 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 44 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:06,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 216 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:03:06,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-19 08:03:06,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 107. [2023-11-19 08:03:06,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 77 states have (on average 1.4675324675324675) internal successors, (113), 78 states have internal predecessors, (113), 27 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-19 08:03:06,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 167 transitions. [2023-11-19 08:03:06,273 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 167 transitions. Word has length 167 [2023-11-19 08:03:06,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:06,279 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 167 transitions. [2023-11-19 08:03:06,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-11-19 08:03:06,280 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 167 transitions. [2023-11-19 08:03:06,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-11-19 08:03:06,291 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:06,291 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:03:06,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e73c1a0-f126-4727-9355-29ed413f0ce8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:06,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e73c1a0-f126-4727-9355-29ed413f0ce8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 08:03:06,518 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:06,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:06,520 INFO L85 PathProgramCache]: Analyzing trace with hash 458767809, now seen corresponding path program 1 times [2023-11-19 08:03:06,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:06,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074954714] [2023-11-19 08:03:06,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:06,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:06,691 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:03:06,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1507767661] [2023-11-19 08:03:06,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:06,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:06,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e73c1a0-f126-4727-9355-29ed413f0ce8/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:06,704 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e73c1a0-f126-4727-9355-29ed413f0ce8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:06,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e73c1a0-f126-4727-9355-29ed413f0ce8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:03:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:06,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:03:07,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:07,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 582 proven. 45 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2023-11-19 08:03:07,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:03:07,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 27 proven. 45 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2023-11-19 08:03:07,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:07,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074954714] [2023-11-19 08:03:07,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:03:07,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507767661] [2023-11-19 08:03:07,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507767661] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:03:07,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:03:07,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-19 08:03:07,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205363742] [2023-11-19 08:03:07,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:03:07,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:03:07,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:07,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:03:07,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:03:07,712 INFO L87 Difference]: Start difference. First operand 107 states and 167 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2023-11-19 08:03:08,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:08,119 INFO L93 Difference]: Finished difference Result 236 states and 363 transitions. [2023-11-19 08:03:08,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:03:08,120 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 167 [2023-11-19 08:03:08,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:08,132 INFO L225 Difference]: With dead ends: 236 [2023-11-19 08:03:08,133 INFO L226 Difference]: Without dead ends: 132 [2023-11-19 08:03:08,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 326 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:03:08,142 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 61 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:08,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 279 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 08:03:08,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-19 08:03:08,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 129. [2023-11-19 08:03:08,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 88 states have (on average 1.3863636363636365) internal successors, (122), 90 states have internal predecessors, (122), 36 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-19 08:03:08,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 194 transitions. [2023-11-19 08:03:08,220 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 194 transitions. Word has length 167 [2023-11-19 08:03:08,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:08,222 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 194 transitions. [2023-11-19 08:03:08,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2023-11-19 08:03:08,223 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 194 transitions. [2023-11-19 08:03:08,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-11-19 08:03:08,231 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:08,232 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:03:08,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e73c1a0-f126-4727-9355-29ed413f0ce8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:08,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e73c1a0-f126-4727-9355-29ed413f0ce8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:08,454 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:08,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:08,455 INFO L85 PathProgramCache]: Analyzing trace with hash -562300545, now seen corresponding path program 1 times [2023-11-19 08:03:08,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:08,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395437466] [2023-11-19 08:03:08,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:08,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:08,587 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:03:08,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1665308994] [2023-11-19 08:03:08,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:08,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:08,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e73c1a0-f126-4727-9355-29ed413f0ce8/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:08,598 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e73c1a0-f126-4727-9355-29ed413f0ce8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:08,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e73c1a0-f126-4727-9355-29ed413f0ce8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:03:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:08,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:03:08,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:09,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-11-19 08:03:09,169 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:09,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:09,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395437466] [2023-11-19 08:03:09,170 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:03:09,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665308994] [2023-11-19 08:03:09,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665308994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:09,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:09,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:03:09,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532257428] [2023-11-19 08:03:09,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:09,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:03:09,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:09,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:03:09,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:03:09,176 INFO L87 Difference]: Start difference. First operand 129 states and 194 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-11-19 08:03:09,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:09,393 INFO L93 Difference]: Finished difference Result 325 states and 494 transitions. [2023-11-19 08:03:09,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:03:09,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 167 [2023-11-19 08:03:09,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:09,401 INFO L225 Difference]: With dead ends: 325 [2023-11-19 08:03:09,402 INFO L226 Difference]: Without dead ends: 217 [2023-11-19 08:03:09,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:03:09,407 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 97 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:09,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 352 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:03:09,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-11-19 08:03:09,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 187. [2023-11-19 08:03:09,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 128 states have (on average 1.390625) internal successors, (178), 129 states have internal predecessors, (178), 52 states have call successors, (52), 6 states have call predecessors, (52), 6 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-19 08:03:09,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 282 transitions. [2023-11-19 08:03:09,488 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 282 transitions. Word has length 167 [2023-11-19 08:03:09,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:09,493 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 282 transitions. [2023-11-19 08:03:09,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-11-19 08:03:09,494 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 282 transitions. [2023-11-19 08:03:09,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-19 08:03:09,497 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:09,498 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:03:09,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e73c1a0-f126-4727-9355-29ed413f0ce8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:09,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e73c1a0-f126-4727-9355-29ed413f0ce8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:09,714 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:09,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:09,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1893019229, now seen corresponding path program 1 times [2023-11-19 08:03:09,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:09,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265488992] [2023-11-19 08:03:09,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:09,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:09,822 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:03:09,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1584949981] [2023-11-19 08:03:09,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:09,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:09,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e73c1a0-f126-4727-9355-29ed413f0ce8/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:09,825 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e73c1a0-f126-4727-9355-29ed413f0ce8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:09,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e73c1a0-f126-4727-9355-29ed413f0ce8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:03:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:10,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-19 08:03:10,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:12,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 470 proven. 231 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2023-11-19 08:03:12,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:03:28,416 WARN L293 SmtUtils]: Spent 6.25s on a formula simplification. DAG size of input: 43 DAG size of output: 32 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)