./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-95.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_7ef3f9a5-d45a-414b-861c-147d1430ecc7/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef3f9a5-d45a-414b-861c-147d1430ecc7/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef3f9a5-d45a-414b-861c-147d1430ecc7/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef3f9a5-d45a-414b-861c-147d1430ecc7/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-95.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef3f9a5-d45a-414b-861c-147d1430ecc7/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef3f9a5-d45a-414b-861c-147d1430ecc7/bin/uautomizer-verify-uTZkv6EMXl --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 78b6b6cf5499eab08fe2bc413479a5546b049ee5c089da6fe6410d342c769f91 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:18:38,856 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:18:38,924 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef3f9a5-d45a-414b-861c-147d1430ecc7/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:18:38,930 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:18:38,930 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:18:38,958 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:18:38,959 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:18:38,959 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:18:38,961 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:18:38,963 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:18:38,964 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:18:38,964 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:18:38,965 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:18:38,968 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:18:38,968 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:18:38,969 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:18:38,970 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:18:38,974 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:18:38,975 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:18:38,976 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:18:38,977 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:18:38,977 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:18:38,978 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:18:38,978 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:18:38,979 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:18:38,979 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:18:38,980 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:18:38,981 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:18:38,981 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:18:38,982 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:18:38,983 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:18:38,984 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:18:38,984 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:18:38,984 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:18:38,985 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:18:38,985 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:18:38,985 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:18:38,986 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:18:38,986 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:18:38,986 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_7ef3f9a5-d45a-414b-861c-147d1430ecc7/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef3f9a5-d45a-414b-861c-147d1430ecc7/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78b6b6cf5499eab08fe2bc413479a5546b049ee5c089da6fe6410d342c769f91 [2023-11-12 02:18:39,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:18:39,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:18:39,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:18:39,326 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:18:39,326 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:18:39,328 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef3f9a5-d45a-414b-861c-147d1430ecc7/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-95.i [2023-11-12 02:18:42,500 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:18:42,795 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:18:42,796 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef3f9a5-d45a-414b-861c-147d1430ecc7/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-95.i [2023-11-12 02:18:42,807 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef3f9a5-d45a-414b-861c-147d1430ecc7/bin/uautomizer-verify-uTZkv6EMXl/data/75264059a/a47bc86a92724b33a336ae0a83e94976/FLAGf21857446 [2023-11-12 02:18:42,821 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef3f9a5-d45a-414b-861c-147d1430ecc7/bin/uautomizer-verify-uTZkv6EMXl/data/75264059a/a47bc86a92724b33a336ae0a83e94976 [2023-11-12 02:18:42,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:18:42,826 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:18:42,827 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:18:42,827 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:18:42,833 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:18:42,836 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:18:42" (1/1) ... [2023-11-12 02:18:42,840 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@549d4eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:42, skipping insertion in model container [2023-11-12 02:18:42,841 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:18:42" (1/1) ... [2023-11-12 02:18:42,892 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:18:43,095 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_7ef3f9a5-d45a-414b-861c-147d1430ecc7/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-95.i[915,928] [2023-11-12 02:18:43,215 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:18:43,236 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:18:43,248 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_7ef3f9a5-d45a-414b-861c-147d1430ecc7/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-95.i[915,928] [2023-11-12 02:18:43,315 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:18:43,342 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:18:43,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:43 WrapperNode [2023-11-12 02:18:43,343 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:18:43,345 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:18:43,345 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:18:43,346 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:18:43,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:43" (1/1) ... [2023-11-12 02:18:43,366 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:43" (1/1) ... [2023-11-12 02:18:43,410 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 273 [2023-11-12 02:18:43,410 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:18:43,411 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:18:43,411 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:18:43,411 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:18:43,421 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:43" (1/1) ... [2023-11-12 02:18:43,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:43" (1/1) ... [2023-11-12 02:18:43,426 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:43" (1/1) ... [2023-11-12 02:18:43,426 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:43" (1/1) ... [2023-11-12 02:18:43,441 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:43" (1/1) ... [2023-11-12 02:18:43,446 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:43" (1/1) ... [2023-11-12 02:18:43,449 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:43" (1/1) ... [2023-11-12 02:18:43,452 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:43" (1/1) ... [2023-11-12 02:18:43,458 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:18:43,459 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:18:43,459 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:18:43,459 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:18:43,460 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:43" (1/1) ... [2023-11-12 02:18:43,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:18:43,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef3f9a5-d45a-414b-861c-147d1430ecc7/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:18:43,501 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef3f9a5-d45a-414b-861c-147d1430ecc7/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:18:43,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef3f9a5-d45a-414b-861c-147d1430ecc7/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:18:43,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:18:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:18:43,538 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:18:43,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:18:43,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:18:43,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:18:43,672 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:18:43,674 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:18:44,210 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:18:44,218 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:18:44,224 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:18:44,234 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:18:44 BoogieIcfgContainer [2023-11-12 02:18:44,234 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:18:44,237 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:18:44,242 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:18:44,245 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:18:44,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:18:42" (1/3) ... [2023-11-12 02:18:44,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fcf3f42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:18:44, skipping insertion in model container [2023-11-12 02:18:44,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:43" (2/3) ... [2023-11-12 02:18:44,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fcf3f42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:18:44, skipping insertion in model container [2023-11-12 02:18:44,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:18:44" (3/3) ... [2023-11-12 02:18:44,249 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-50_file-95.i [2023-11-12 02:18:44,271 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:18:44,271 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:18:44,351 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:18:44,358 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;@40379944, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:18:44,376 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:18:44,383 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 73 states have (on average 1.4246575342465753) internal successors, (104), 74 states have internal predecessors, (104), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-12 02:18:44,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-11-12 02:18:44,409 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:18:44,410 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:44,410 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:18:44,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:44,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1601604781, now seen corresponding path program 1 times [2023-11-12 02:18:44,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:44,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294351167] [2023-11-12 02:18:44,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:44,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:44,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:44,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294351167] [2023-11-12 02:18:44,786 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-12 02:18:44,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494694493] [2023-11-12 02:18:44,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:44,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:18:44,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef3f9a5-d45a-414b-861c-147d1430ecc7/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:18:44,795 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef3f9a5-d45a-414b-861c-147d1430ecc7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:18:44,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef3f9a5-d45a-414b-861c-147d1430ecc7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:18:45,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:45,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 02:18:45,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:18:45,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2023-11-12 02:18:45,299 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:18:45,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494694493] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:45,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:45,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:18:45,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706302672] [2023-11-12 02:18:45,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:45,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:18:45,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:45,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:18:45,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:18:45,355 INFO L87 Difference]: Start difference. First operand has 120 states, 73 states have (on average 1.4246575342465753) internal successors, (104), 74 states have internal predecessors, (104), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2023-11-12 02:18:45,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:18:45,407 INFO L93 Difference]: Finished difference Result 232 states and 420 transitions. [2023-11-12 02:18:45,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:18:45,410 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) Word has length 273 [2023-11-12 02:18:45,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:18:45,419 INFO L225 Difference]: With dead ends: 232 [2023-11-12 02:18:45,419 INFO L226 Difference]: Without dead ends: 115 [2023-11-12 02:18:45,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:18:45,428 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:18:45,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:18:45,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-12 02:18:45,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-11-12 02:18:45,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 69 states have (on average 1.3623188405797102) internal successors, (94), 69 states have internal predecessors, (94), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-12 02:18:45,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 182 transitions. [2023-11-12 02:18:45,496 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 182 transitions. Word has length 273 [2023-11-12 02:18:45,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:18:45,497 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 182 transitions. [2023-11-12 02:18:45,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2023-11-12 02:18:45,498 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 182 transitions. [2023-11-12 02:18:45,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-11-12 02:18:45,510 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:18:45,511 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:45,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef3f9a5-d45a-414b-861c-147d1430ecc7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:18:45,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef3f9a5-d45a-414b-861c-147d1430ecc7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 02:18:45,715 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:18:45,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:45,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1453512923, now seen corresponding path program 1 times [2023-11-12 02:18:45,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:45,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863032201] [2023-11-12 02:18:45,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:45,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:45,835 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:18:45,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [180015536] [2023-11-12 02:18:45,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:45,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:18:45,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef3f9a5-d45a-414b-861c-147d1430ecc7/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:18:45,838 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef3f9a5-d45a-414b-861c-147d1430ecc7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:18:45,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef3f9a5-d45a-414b-861c-147d1430ecc7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:18:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:46,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:18:46,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:18:46,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1779 proven. 45 refuted. 0 times theorem prover too weak. 1960 trivial. 0 not checked. [2023-11-12 02:18:46,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:18:46,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 84 proven. 45 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2023-11-12 02:18:46,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:46,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863032201] [2023-11-12 02:18:46,778 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:18:46,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180015536] [2023-11-12 02:18:46,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180015536] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:18:46,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:18:46,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-12 02:18:46,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016031993] [2023-11-12 02:18:46,779 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:18:46,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:18:46,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:46,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:18:46,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:18:46,784 INFO L87 Difference]: Start difference. First operand 115 states and 182 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 2 states have call successors, (59), 2 states have call predecessors, (59), 4 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2023-11-12 02:18:47,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:18:47,203 INFO L93 Difference]: Finished difference Result 235 states and 368 transitions. [2023-11-12 02:18:47,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:18:47,204 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 2 states have call successors, (59), 2 states have call predecessors, (59), 4 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 273 [2023-11-12 02:18:47,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:18:47,210 INFO L225 Difference]: With dead ends: 235 [2023-11-12 02:18:47,210 INFO L226 Difference]: Without dead ends: 123 [2023-11-12 02:18:47,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 538 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:18:47,214 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 107 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:18:47,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 307 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:18:47,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-12 02:18:47,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2023-11-12 02:18:47,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 72 states have (on average 1.3333333333333333) internal successors, (96), 72 states have internal predecessors, (96), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-12 02:18:47,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 184 transitions. [2023-11-12 02:18:47,261 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 184 transitions. Word has length 273 [2023-11-12 02:18:47,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:18:47,263 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 184 transitions. [2023-11-12 02:18:47,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 2 states have call successors, (59), 2 states have call predecessors, (59), 4 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2023-11-12 02:18:47,263 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 184 transitions. [2023-11-12 02:18:47,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-11-12 02:18:47,270 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:18:47,270 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:47,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef3f9a5-d45a-414b-861c-147d1430ecc7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:18:47,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef3f9a5-d45a-414b-861c-147d1430ecc7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-12 02:18:47,477 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:18:47,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:47,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1253106471, now seen corresponding path program 1 times [2023-11-12 02:18:47,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:47,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770244055] [2023-11-12 02:18:47,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:47,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:47,563 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:18:47,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709567687] [2023-11-12 02:18:47,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:47,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:18:47,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef3f9a5-d45a-414b-861c-147d1430ecc7/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:18:47,575 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef3f9a5-d45a-414b-861c-147d1430ecc7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:18:47,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef3f9a5-d45a-414b-861c-147d1430ecc7/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:18:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:47,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-12 02:18:47,848 INFO L285 TraceCheckSpWp]: Computing forward predicates...