./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-64.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/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_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-64.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/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_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/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 e5d7e0b0c5d9476a8ff19ede4042aea6220e122ea32375ea4848a6627ab63cfc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:55:19,170 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:55:19,244 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:55:19,250 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:55:19,250 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:55:19,275 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:55:19,276 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:55:19,277 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:55:19,277 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:55:19,278 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:55:19,279 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:55:19,279 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:55:19,280 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:55:19,280 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:55:19,281 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:55:19,281 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:55:19,282 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:55:19,283 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:55:19,283 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:55:19,283 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:55:19,284 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:55:19,290 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:55:19,290 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:55:19,291 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:55:19,291 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:55:19,291 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:55:19,292 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:55:19,292 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:55:19,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:55:19,293 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:55:19,293 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:55:19,294 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:55:19,294 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:55:19,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:55:19,295 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:55:19,295 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:55:19,295 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:55:19,296 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:55:19,296 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:55:19,296 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_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e5d7e0b0c5d9476a8ff19ede4042aea6220e122ea32375ea4848a6627ab63cfc [2023-11-19 07:55:19,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:55:19,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:55:19,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:55:19,626 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:55:19,626 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:55:19,628 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-64.i [2023-11-19 07:55:23,018 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:55:23,290 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:55:23,291 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-64.i [2023-11-19 07:55:23,308 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/data/358729d5c/904a70c1a56a496f924d39f18480138a/FLAGbca88f867 [2023-11-19 07:55:23,324 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/data/358729d5c/904a70c1a56a496f924d39f18480138a [2023-11-19 07:55:23,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:55:23,337 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:55:23,342 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:55:23,342 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:55:23,348 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:55:23,351 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:23" (1/1) ... [2023-11-19 07:55:23,352 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@673d4fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23, skipping insertion in model container [2023-11-19 07:55:23,352 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:23" (1/1) ... [2023-11-19 07:55:23,405 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:55:23,604 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_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-64.i[919,932] [2023-11-19 07:55:23,718 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:55:23,738 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:55:23,757 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_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-64.i[919,932] [2023-11-19 07:55:23,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:55:23,827 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:55:23,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23 WrapperNode [2023-11-19 07:55:23,828 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:55:23,829 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:55:23,829 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:55:23,829 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:55:23,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ... [2023-11-19 07:55:23,848 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ... [2023-11-19 07:55:23,886 INFO L138 Inliner]: procedures = 26, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 209 [2023-11-19 07:55:23,887 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:55:23,888 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:55:23,888 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:55:23,888 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:55:23,897 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ... [2023-11-19 07:55:23,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ... [2023-11-19 07:55:23,901 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ... [2023-11-19 07:55:23,901 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ... [2023-11-19 07:55:23,911 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ... [2023-11-19 07:55:23,915 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ... [2023-11-19 07:55:23,918 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ... [2023-11-19 07:55:23,920 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ... [2023-11-19 07:55:23,924 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:55:23,925 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:55:23,926 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:55:23,926 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:55:23,927 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ... [2023-11-19 07:55:23,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:55:23,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:23,988 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:55:23,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:55:24,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:55:24,026 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:55:24,027 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:55:24,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:55:24,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:55:24,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:55:24,123 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:55:24,125 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:55:24,643 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:55:24,656 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:55:24,658 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:55:24,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:24 BoogieIcfgContainer [2023-11-19 07:55:24,663 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:55:24,665 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:55:24,666 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:55:24,669 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:55:24,670 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:55:23" (1/3) ... [2023-11-19 07:55:24,670 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b63e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:55:24, skipping insertion in model container [2023-11-19 07:55:24,670 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (2/3) ... [2023-11-19 07:55:24,671 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b63e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:55:24, skipping insertion in model container [2023-11-19 07:55:24,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:24" (3/3) ... [2023-11-19 07:55:24,672 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-64.i [2023-11-19 07:55:24,688 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:55:24,688 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:55:24,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:55:24,764 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;@5d23542a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:55:24,765 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:55:24,769 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 57 states have (on average 1.4385964912280702) internal successors, (82), 58 states have internal predecessors, (82), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-19 07:55:24,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-11-19 07:55:24,804 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:24,805 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:24,806 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:24,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:24,812 INFO L85 PathProgramCache]: Analyzing trace with hash 608077560, now seen corresponding path program 1 times [2023-11-19 07:55:24,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:24,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654288533] [2023-11-19 07:55:24,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:24,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:25,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:25,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654288533] [2023-11-19 07:55:25,158 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:55:25,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656681872] [2023-11-19 07:55:25,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:25,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:25,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:25,161 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:25,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:55:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:25,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:55:25,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:25,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2023-11-19 07:55:25,580 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:55:25,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656681872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:25,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:25,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:55:25,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408258361] [2023-11-19 07:55:25,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:25,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:55:25,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:25,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:55:25,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:55:25,642 INFO L87 Difference]: Start difference. First operand has 88 states, 57 states have (on average 1.4385964912280702) internal successors, (82), 58 states have internal predecessors, (82), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-19 07:55:25,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:25,679 INFO L93 Difference]: Finished difference Result 169 states and 298 transitions. [2023-11-19 07:55:25,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:55:25,681 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 2 states have call successors, (28) Word has length 183 [2023-11-19 07:55:25,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:25,689 INFO L225 Difference]: With dead ends: 169 [2023-11-19 07:55:25,689 INFO L226 Difference]: Without dead ends: 84 [2023-11-19 07:55:25,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:55:25,696 INFO L413 NwaCegarLoop]: 131 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, 131 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 [2023-11-19 07:55:25,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:55:25,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-11-19 07:55:25,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-11-19 07:55:25,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 54 states have (on average 1.3888888888888888) internal successors, (75), 54 states have internal predecessors, (75), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-19 07:55:25,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 131 transitions. [2023-11-19 07:55:25,755 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 131 transitions. Word has length 183 [2023-11-19 07:55:25,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:25,756 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 131 transitions. [2023-11-19 07:55:25,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-19 07:55:25,757 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 131 transitions. [2023-11-19 07:55:25,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-11-19 07:55:25,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:25,762 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:25,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:25,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:25,980 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:25,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:25,981 INFO L85 PathProgramCache]: Analyzing trace with hash -552169028, now seen corresponding path program 1 times [2023-11-19 07:55:25,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:25,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801996272] [2023-11-19 07:55:25,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:25,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:26,067 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:26,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [305971577] [2023-11-19 07:55:26,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:26,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:26,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:26,070 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:26,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:55:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:26,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:55:26,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:33,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-11-19 07:55:33,543 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:55:33,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:33,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801996272] [2023-11-19 07:55:33,544 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:33,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305971577] [2023-11-19 07:55:33,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305971577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:33,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:33,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:55:33,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831528174] [2023-11-19 07:55:33,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:33,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:55:33,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:33,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:55:33,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:55:33,553 INFO L87 Difference]: Start difference. First operand 84 states and 131 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-19 07:55:33,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:33,967 INFO L93 Difference]: Finished difference Result 302 states and 468 transitions. [2023-11-19 07:55:33,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:55:33,969 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 183 [2023-11-19 07:55:33,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:33,974 INFO L225 Difference]: With dead ends: 302 [2023-11-19 07:55:33,975 INFO L226 Difference]: Without dead ends: 221 [2023-11-19 07:55:33,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:55:33,978 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 209 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:33,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 821 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:55:33,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-11-19 07:55:34,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 91. [2023-11-19 07:55:34,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 61 states have (on average 1.3934426229508197) internal successors, (85), 61 states have internal predecessors, (85), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-19 07:55:34,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 141 transitions. [2023-11-19 07:55:34,006 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 141 transitions. Word has length 183 [2023-11-19 07:55:34,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:34,008 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 141 transitions. [2023-11-19 07:55:34,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-19 07:55:34,009 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 141 transitions. [2023-11-19 07:55:34,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-11-19 07:55:34,013 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:34,013 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:34,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:34,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:34,238 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:34,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:34,239 INFO L85 PathProgramCache]: Analyzing trace with hash 148895550, now seen corresponding path program 1 times [2023-11-19 07:55:34,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:34,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678443733] [2023-11-19 07:55:34,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:34,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:34,320 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:34,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [524126959] [2023-11-19 07:55:34,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:34,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:34,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:34,325 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:34,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:55:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:34,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:55:34,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:36,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-11-19 07:55:36,164 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:55:36,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:36,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678443733] [2023-11-19 07:55:36,165 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:36,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524126959] [2023-11-19 07:55:36,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524126959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:36,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:36,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:55:36,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464530490] [2023-11-19 07:55:36,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:36,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:55:36,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:36,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:55:36,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:55:36,169 INFO L87 Difference]: Start difference. First operand 91 states and 141 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-19 07:55:36,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:36,404 INFO L93 Difference]: Finished difference Result 261 states and 402 transitions. [2023-11-19 07:55:36,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:55:36,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 183 [2023-11-19 07:55:36,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:36,413 INFO L225 Difference]: With dead ends: 261 [2023-11-19 07:55:36,413 INFO L226 Difference]: Without dead ends: 173 [2023-11-19 07:55:36,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:55:36,418 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 130 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:36,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 632 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:55:36,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-11-19 07:55:36,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 91. [2023-11-19 07:55:36,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 61 states have (on average 1.3934426229508197) internal successors, (85), 61 states have internal predecessors, (85), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-19 07:55:36,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 141 transitions. [2023-11-19 07:55:36,458 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 141 transitions. Word has length 183 [2023-11-19 07:55:36,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:36,459 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 141 transitions. [2023-11-19 07:55:36,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-19 07:55:36,459 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 141 transitions. [2023-11-19 07:55:36,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-11-19 07:55:36,468 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:36,469 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:36,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-19 07:55:36,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-19 07:55:36,690 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:36,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:36,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1010216260, now seen corresponding path program 1 times [2023-11-19 07:55:36,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:36,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760523615] [2023-11-19 07:55:36,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:36,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:36,732 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:36,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [17121292] [2023-11-19 07:55:36,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:36,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:36,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:36,734 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:36,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:55:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:36,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:55:36,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:39,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-11-19 07:55:39,188 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:55:39,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:39,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760523615] [2023-11-19 07:55:39,189 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:39,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17121292] [2023-11-19 07:55:39,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17121292] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:39,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:39,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:55:39,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841877777] [2023-11-19 07:55:39,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:39,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:55:39,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:39,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:55:39,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:55:39,194 INFO L87 Difference]: Start difference. First operand 91 states and 141 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-19 07:55:39,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:39,477 INFO L93 Difference]: Finished difference Result 309 states and 477 transitions. [2023-11-19 07:55:39,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:55:39,479 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 183 [2023-11-19 07:55:39,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:39,484 INFO L225 Difference]: With dead ends: 309 [2023-11-19 07:55:39,484 INFO L226 Difference]: Without dead ends: 221 [2023-11-19 07:55:39,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:55:39,493 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 206 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:39,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 577 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:55:39,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-11-19 07:55:39,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 91. [2023-11-19 07:55:39,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 61 states have (on average 1.3934426229508197) internal successors, (85), 61 states have internal predecessors, (85), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-19 07:55:39,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 141 transitions. [2023-11-19 07:55:39,526 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 141 transitions. Word has length 183 [2023-11-19 07:55:39,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:39,528 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 141 transitions. [2023-11-19 07:55:39,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-19 07:55:39,529 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 141 transitions. [2023-11-19 07:55:39,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-11-19 07:55:39,533 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:39,534 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:39,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-19 07:55:39,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:39,750 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:39,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:39,750 INFO L85 PathProgramCache]: Analyzing trace with hash -309151682, now seen corresponding path program 1 times [2023-11-19 07:55:39,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:39,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601107982] [2023-11-19 07:55:39,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:39,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:39,816 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:39,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [705600479] [2023-11-19 07:55:39,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:39,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:39,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:39,822 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:39,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:55:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:40,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:55:40,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:41,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-11-19 07:55:41,435 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:55:41,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:41,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601107982] [2023-11-19 07:55:41,436 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:41,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705600479] [2023-11-19 07:55:41,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705600479] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:41,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:41,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:55:41,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135436730] [2023-11-19 07:55:41,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:41,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:55:41,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:41,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:55:41,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:55:41,439 INFO L87 Difference]: Start difference. First operand 91 states and 141 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-19 07:55:41,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:41,702 INFO L93 Difference]: Finished difference Result 309 states and 476 transitions. [2023-11-19 07:55:41,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:55:41,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 183 [2023-11-19 07:55:41,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:41,709 INFO L225 Difference]: With dead ends: 309 [2023-11-19 07:55:41,709 INFO L226 Difference]: Without dead ends: 221 [2023-11-19 07:55:41,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:55:41,711 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 205 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:41,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 609 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:55:41,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-11-19 07:55:41,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 84. [2023-11-19 07:55:41,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 54 states have (on average 1.3703703703703705) internal successors, (74), 54 states have internal predecessors, (74), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-19 07:55:41,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 130 transitions. [2023-11-19 07:55:41,729 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 130 transitions. Word has length 183 [2023-11-19 07:55:41,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:41,730 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 130 transitions. [2023-11-19 07:55:41,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-19 07:55:41,731 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 130 transitions. [2023-11-19 07:55:41,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-11-19 07:55:41,734 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:41,734 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:41,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:41,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:41,956 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:41,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:41,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1985779049, now seen corresponding path program 1 times [2023-11-19 07:55:41,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:41,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985333367] [2023-11-19 07:55:41,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:41,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:42,011 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:42,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [322995557] [2023-11-19 07:55:42,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:42,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:42,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:42,013 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:42,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_868f7073-3b3a-4aaa-b999-0f8c6cb4fe0c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:55:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:42,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-19 07:55:42,230 INFO L285 TraceCheckSpWp]: Computing forward predicates...