./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0661a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0661a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 97db4649e1472818bc0988249575733f0ee094f6677a6f3f19d9bb4aec20f92d ............................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0661a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 97db4649e1472818bc0988249575733f0ee094f6677a6f3f19d9bb4aec20f92d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:19:54,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:19:54,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:19:54,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:19:54,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:19:54,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:19:54,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:19:54,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:19:54,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:19:54,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:19:54,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:19:54,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:19:54,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:19:54,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:19:54,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:19:54,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:19:54,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:19:54,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:19:54,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:19:54,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:19:54,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:19:54,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:19:54,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:19:54,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:19:54,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:19:54,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:19:54,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:19:54,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:19:54,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:19:54,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:19:54,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:19:54,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:19:54,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:19:54,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:19:54,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:19:54,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:19:54,300 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:19:54,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:19:54,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:19:54,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:19:54,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:19:54,306 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:19:54,340 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:19:54,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:19:54,354 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:19:54,354 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:19:54,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:19:54,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:19:54,357 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:19:54,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:19:54,358 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:19:54,358 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:19:54,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:19:54,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:19:54,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:19:54,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:19:54,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:19:54,361 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:19:54,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:19:54,362 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:19:54,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:19:54,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:19:54,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:19:54,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:19:54,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:19:54,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:19:54,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:19:54,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:19:54,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:19:54,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:19:54,365 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:19:54,367 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:19:54,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:19:54,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:19:54,369 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97db4649e1472818bc0988249575733f0ee094f6677a6f3f19d9bb4aec20f92d [2021-10-28 09:19:54,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:19:54,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:19:54,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:19:54,735 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:19:54,736 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:19:54,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/float-newlib/double_req_bl_0661a.c [2021-10-28 09:19:54,813 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/data/d6c1079ca/62141961a22446cd93b9afcde89a9bac/FLAG265fda17b [2021-10-28 09:19:55,412 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:19:55,413 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/sv-benchmarks/c/float-newlib/double_req_bl_0661a.c [2021-10-28 09:19:55,423 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/data/d6c1079ca/62141961a22446cd93b9afcde89a9bac/FLAG265fda17b [2021-10-28 09:19:55,690 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/data/d6c1079ca/62141961a22446cd93b9afcde89a9bac [2021-10-28 09:19:55,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:19:55,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:19:55,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:19:55,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:19:55,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:19:55,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:19:55" (1/1) ... [2021-10-28 09:19:55,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17925440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:55, skipping insertion in model container [2021-10-28 09:19:55,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:19:55" (1/1) ... [2021-10-28 09:19:55,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:19:55,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:19:56,088 WARN L228 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_f009b950-9977-4ebc-bcb4-76ebdb1009c5/sv-benchmarks/c/float-newlib/double_req_bl_0661a.c[6446,6459] [2021-10-28 09:19:56,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:19:56,105 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:19:56,177 WARN L228 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_f009b950-9977-4ebc-bcb4-76ebdb1009c5/sv-benchmarks/c/float-newlib/double_req_bl_0661a.c[6446,6459] [2021-10-28 09:19:56,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:19:56,221 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:19:56,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:56 WrapperNode [2021-10-28 09:19:56,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:19:56,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:19:56,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:19:56,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:19:56,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:56" (1/1) ... [2021-10-28 09:19:56,269 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:56" (1/1) ... [2021-10-28 09:19:56,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:19:56,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:19:56,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:19:56,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:19:56,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:56" (1/1) ... [2021-10-28 09:19:56,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:56" (1/1) ... [2021-10-28 09:19:56,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:56" (1/1) ... [2021-10-28 09:19:56,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:56" (1/1) ... [2021-10-28 09:19:56,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:56" (1/1) ... [2021-10-28 09:19:56,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:56" (1/1) ... [2021-10-28 09:19:56,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:56" (1/1) ... [2021-10-28 09:19:56,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:19:56,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:19:56,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:19:56,433 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:19:56,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:56" (1/1) ... [2021-10-28 09:19:56,459 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:19:56,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:19:56,507 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:19:56,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:19:56,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:19:56,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:19:56,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-28 09:19:56,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:19:56,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-28 09:19:56,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:19:56,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:19:56,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:19:56,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-10-28 09:19:56,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:19:57,625 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:19:57,625 INFO L299 CfgBuilder]: Removed 48 assume(true) statements. [2021-10-28 09:19:57,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:19:57 BoogieIcfgContainer [2021-10-28 09:19:57,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:19:57,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:19:57,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:19:57,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:19:57,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:19:55" (1/3) ... [2021-10-28 09:19:57,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ae8759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:19:57, skipping insertion in model container [2021-10-28 09:19:57,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:56" (2/3) ... [2021-10-28 09:19:57,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ae8759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:19:57, skipping insertion in model container [2021-10-28 09:19:57,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:19:57" (3/3) ... [2021-10-28 09:19:57,639 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0661a.c [2021-10-28 09:19:57,646 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:19:57,646 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:19:57,725 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:19:57,733 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:19:57,733 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 09:19:57,756 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 118 states have (on average 1.7033898305084745) internal successors, (201), 119 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:57,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:19:57,764 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:19:57,764 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:57,765 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:19:57,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:57,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1517456143, now seen corresponding path program 1 times [2021-10-28 09:19:57,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:19:57,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842160931] [2021-10-28 09:19:57,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:57,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:19:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:57,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:19:57,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:19:57,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842160931] [2021-10-28 09:19:57,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842160931] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:19:57,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:19:57,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:19:57,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34011764] [2021-10-28 09:19:58,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:19:58,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:19:58,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:19:58,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:19:58,025 INFO L87 Difference]: Start difference. First operand has 120 states, 118 states have (on average 1.7033898305084745) internal successors, (201), 119 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:58,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:19:58,061 INFO L93 Difference]: Finished difference Result 237 states and 398 transitions. [2021-10-28 09:19:58,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:19:58,063 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-28 09:19:58,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:19:58,077 INFO L225 Difference]: With dead ends: 237 [2021-10-28 09:19:58,077 INFO L226 Difference]: Without dead ends: 116 [2021-10-28 09:19:58,098 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:19:58,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-28 09:19:58,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-10-28 09:19:58,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.434782608695652) internal successors, (165), 115 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:58,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 165 transitions. [2021-10-28 09:19:58,154 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 165 transitions. Word has length 12 [2021-10-28 09:19:58,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:19:58,155 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 165 transitions. [2021-10-28 09:19:58,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:19:58,155 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 165 transitions. [2021-10-28 09:19:58,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 09:19:58,157 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:19:58,157 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:58,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:19:58,158 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:19:58,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:58,159 INFO L85 PathProgramCache]: Analyzing trace with hash -229938040, now seen corresponding path program 1 times [2021-10-28 09:19:58,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:19:58,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746215030] [2021-10-28 09:19:58,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:58,161 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:19:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:19:58,283 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:19:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:19:58,458 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:19:58,459 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:19:58,461 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:19:58,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:19:58,468 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 09:19:58,471 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:19:58,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:19:58 BoogieIcfgContainer [2021-10-28 09:19:58,524 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:19:58,525 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:19:58,525 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:19:58,525 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:19:58,526 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:19:57" (3/4) ... [2021-10-28 09:19:58,529 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:19:58,530 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:19:58,532 INFO L168 Benchmark]: Toolchain (without parser) took 2827.68 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 60.8 MB in the beginning and 58.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:19:58,533 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 86.0 MB. Free memory was 60.2 MB in the beginning and 60.1 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:19:58,534 INFO L168 Benchmark]: CACSL2BoogieTranslator took 517.20 ms. Allocated memory is still 86.0 MB. Free memory was 60.7 MB in the beginning and 57.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:19:58,535 INFO L168 Benchmark]: Boogie Procedure Inliner took 122.69 ms. Allocated memory is still 86.0 MB. Free memory was 57.6 MB in the beginning and 53.9 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:19:58,536 INFO L168 Benchmark]: Boogie Preprocessor took 83.95 ms. Allocated memory is still 86.0 MB. Free memory was 53.9 MB in the beginning and 50.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:19:58,537 INFO L168 Benchmark]: RCFGBuilder took 1195.52 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 50.7 MB in the beginning and 62.6 MB in the end (delta: -11.9 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:19:58,538 INFO L168 Benchmark]: TraceAbstraction took 893.45 ms. Allocated memory is still 104.9 MB. Free memory was 62.1 MB in the beginning and 58.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:19:58,539 INFO L168 Benchmark]: Witness Printer took 5.15 ms. Allocated memory is still 104.9 MB. Free memory is still 58.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:19:58,547 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 86.0 MB. Free memory was 60.2 MB in the beginning and 60.1 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 517.20 ms. Allocated memory is still 86.0 MB. Free memory was 60.7 MB in the beginning and 57.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 122.69 ms. Allocated memory is still 86.0 MB. Free memory was 57.6 MB in the beginning and 53.9 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 83.95 ms. Allocated memory is still 86.0 MB. Free memory was 53.9 MB in the beginning and 50.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1195.52 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 50.7 MB in the beginning and 62.6 MB in the end (delta: -11.9 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 893.45 ms. Allocated memory is still 104.9 MB. Free memory was 62.1 MB in the beginning and 58.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * Witness Printer took 5.15 ms. Allocated memory is still 104.9 MB. Free memory is still 58.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 273]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 164, overapproximation of someUnaryDOUBLEoperation at line 267, overapproximation of bitwiseAnd at line 162, overapproximation of someBinaryArithmeticDOUBLEoperation at line 165, overapproximation of someBinaryDOUBLEComparisonOperation at line 272. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L141-L142] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L266] double x = __VERIFIER_nondet_double(); [L267] double y = -0.0; VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L269] COND TRUE x > 0.0 [L145] double z; [L146] __int32_t k, m, hx, hy, ix, iy; [L147] __uint32_t lx, ly; VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L150] ieee_double_shape_type ew_u; [L151] ew_u.value = (x) [L152] EXPR ew_u.parts.msw [L152] (hx) = ew_u.parts.msw [L153] EXPR ew_u.parts.lsw [L153] (lx) = ew_u.parts.lsw [L155] ix = hx & 0x7fffffff VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L157] ieee_double_shape_type ew_u; [L158] ew_u.value = (y) [L159] EXPR ew_u.parts.msw [L159] (hy) = ew_u.parts.msw [L160] EXPR ew_u.parts.lsw [L160] (ly) = ew_u.parts.lsw [L162] iy = hy & 0x7fffffff VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L163-L164] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L165] return x + y; VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L270] double res = __ieee754_atan2(y, x); [L272] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L272] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L273] reach_error() VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 120 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 170 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 09:19:58,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:20:01,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:20:01,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:20:01,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:20:01,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:20:01,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:20:01,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:20:01,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:20:01,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:20:01,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:20:01,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:20:01,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:20:01,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:20:01,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:20:01,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:20:01,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:20:01,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:20:01,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:20:01,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:20:01,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:20:01,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:20:01,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:20:01,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:20:01,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:20:01,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:20:01,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:20:01,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:20:01,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:20:01,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:20:01,755 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:20:01,755 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:20:01,756 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:20:01,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:20:01,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:20:01,761 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:20:01,761 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:20:01,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:20:01,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:20:01,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:20:01,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:20:01,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:20:01,768 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 09:20:01,819 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:20:01,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:20:01,820 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:20:01,820 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:20:01,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:20:01,822 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:20:01,822 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:20:01,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:20:01,823 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:20:01,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:20:01,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:20:01,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:20:01,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:20:01,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:20:01,830 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 09:20:01,830 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 09:20:01,831 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:20:01,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:20:01,831 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:20:01,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:20:01,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:20:01,832 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:20:01,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:20:01,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:20:01,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:20:01,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:20:01,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:20:01,835 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 09:20:01,836 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 09:20:01,836 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:20:01,836 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:20:01,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:20:01,837 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:20:01,837 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 09:20:01,838 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97db4649e1472818bc0988249575733f0ee094f6677a6f3f19d9bb4aec20f92d [2021-10-28 09:20:02,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:20:02,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:20:02,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:20:02,400 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:20:02,402 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:20:02,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/float-newlib/double_req_bl_0661a.c [2021-10-28 09:20:02,487 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/data/eb11726d4/642b33c0ad334ff49d6578e70e6f1904/FLAG021b9819c [2021-10-28 09:20:03,108 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:20:03,109 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/sv-benchmarks/c/float-newlib/double_req_bl_0661a.c [2021-10-28 09:20:03,127 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/data/eb11726d4/642b33c0ad334ff49d6578e70e6f1904/FLAG021b9819c [2021-10-28 09:20:03,424 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/data/eb11726d4/642b33c0ad334ff49d6578e70e6f1904 [2021-10-28 09:20:03,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:20:03,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:20:03,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:20:03,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:20:03,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:20:03,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:20:03" (1/1) ... [2021-10-28 09:20:03,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3889d438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:20:03, skipping insertion in model container [2021-10-28 09:20:03,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:20:03" (1/1) ... [2021-10-28 09:20:03,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:20:03,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:20:03,816 WARN L228 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_f009b950-9977-4ebc-bcb4-76ebdb1009c5/sv-benchmarks/c/float-newlib/double_req_bl_0661a.c[6446,6459] [2021-10-28 09:20:03,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:20:03,890 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:20:04,048 WARN L228 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_f009b950-9977-4ebc-bcb4-76ebdb1009c5/sv-benchmarks/c/float-newlib/double_req_bl_0661a.c[6446,6459] [2021-10-28 09:20:04,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:20:04,086 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:20:04,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:20:04 WrapperNode [2021-10-28 09:20:04,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:20:04,088 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:20:04,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:20:04,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:20:04,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:20:04" (1/1) ... [2021-10-28 09:20:04,118 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:20:04" (1/1) ... [2021-10-28 09:20:04,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:20:04,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:20:04,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:20:04,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:20:04,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:20:04" (1/1) ... [2021-10-28 09:20:04,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:20:04" (1/1) ... [2021-10-28 09:20:04,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:20:04" (1/1) ... [2021-10-28 09:20:04,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:20:04" (1/1) ... [2021-10-28 09:20:04,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:20:04" (1/1) ... [2021-10-28 09:20:04,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:20:04" (1/1) ... [2021-10-28 09:20:04,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:20:04" (1/1) ... [2021-10-28 09:20:04,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:20:04,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:20:04,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:20:04,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:20:04,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:20:04" (1/1) ... [2021-10-28 09:20:04,257 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:20:04,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:20:04,323 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:20:04,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:20:04,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-28 09:20:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-28 09:20:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 09:20:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:20:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-10-28 09:20:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 09:20:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:20:04,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:20:04,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 09:20:04,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:20:46,175 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:20:46,176 INFO L299 CfgBuilder]: Removed 48 assume(true) statements. [2021-10-28 09:20:46,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:20:46 BoogieIcfgContainer [2021-10-28 09:20:46,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:20:46,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:20:46,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:20:46,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:20:46,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:20:03" (1/3) ... [2021-10-28 09:20:46,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb25d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:20:46, skipping insertion in model container [2021-10-28 09:20:46,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:20:04" (2/3) ... [2021-10-28 09:20:46,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb25d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:20:46, skipping insertion in model container [2021-10-28 09:20:46,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:20:46" (3/3) ... [2021-10-28 09:20:46,191 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0661a.c [2021-10-28 09:20:46,197 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:20:46,198 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:20:46,260 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:20:46,268 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:20:46,268 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 09:20:46,295 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 118 states have (on average 1.7033898305084745) internal successors, (201), 119 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:46,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:20:46,301 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:46,302 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:46,303 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:46,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:46,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1517456143, now seen corresponding path program 1 times [2021-10-28 09:20:46,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:20:46,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [181529739] [2021-10-28 09:20:46,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:46,326 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:20:46,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:20:46,329 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:20:46,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 09:20:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:46,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-28 09:20:46,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:47,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:20:47,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:20:47,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:20:47,381 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:20:47,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [181529739] [2021-10-28 09:20:47,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [181529739] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:20:47,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:20:47,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 09:20:47,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521289882] [2021-10-28 09:20:47,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:20:47,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:20:47,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:20:47,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:20:47,418 INFO L87 Difference]: Start difference. First operand has 120 states, 118 states have (on average 1.7033898305084745) internal successors, (201), 119 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:47,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:20:47,454 INFO L93 Difference]: Finished difference Result 237 states and 398 transitions. [2021-10-28 09:20:47,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:20:47,456 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-28 09:20:47,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:20:47,468 INFO L225 Difference]: With dead ends: 237 [2021-10-28 09:20:47,469 INFO L226 Difference]: Without dead ends: 116 [2021-10-28 09:20:47,472 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:20:47,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-28 09:20:47,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-10-28 09:20:47,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.434782608695652) internal successors, (165), 115 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:47,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 165 transitions. [2021-10-28 09:20:47,523 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 165 transitions. Word has length 12 [2021-10-28 09:20:47,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:20:47,523 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 165 transitions. [2021-10-28 09:20:47,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:20:47,524 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 165 transitions. [2021-10-28 09:20:47,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 09:20:47,525 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:20:47,525 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:47,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:20:47,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:20:47,748 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:20:47,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:20:47,749 INFO L85 PathProgramCache]: Analyzing trace with hash -229938040, now seen corresponding path program 1 times [2021-10-28 09:20:47,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:20:47,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372501035] [2021-10-28 09:20:47,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:20:47,751 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:20:47,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:20:47,752 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:20:47,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 09:20:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:20:48,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 09:20:48,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:49,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 40 [2021-10-28 09:20:52,263 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 09:20:52,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 26 [2021-10-28 09:20:54,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:20:54,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:21:20,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 70 [2021-10-28 09:21:46,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:21:46,317 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:21:46,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372501035] [2021-10-28 09:21:46,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372501035] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:21:46,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:21:46,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-28 09:21:46,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134235493] [2021-10-28 09:21:46,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:21:46,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:21:46,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:21:46,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=131, Unknown=20, NotChecked=0, Total=182 [2021-10-28 09:21:46,323 INFO L87 Difference]: Start difference. First operand 116 states and 165 transitions. Second operand has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:22:24,494 WARN L207 SmtUtils]: Spent 13.38 s on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2021-10-28 09:22:41,170 WARN L207 SmtUtils]: Spent 15.93 s on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2021-10-28 09:22:50,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:22:50,870 INFO L93 Difference]: Finished difference Result 191 states and 262 transitions. [2021-10-28 09:22:50,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:22:50,873 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-28 09:22:50,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:22:50,876 INFO L225 Difference]: With dead ends: 191 [2021-10-28 09:22:50,876 INFO L226 Difference]: Without dead ends: 127 [2021-10-28 09:22:50,877 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 103.0s TimeCoverageRelationStatistics Valid=83, Invalid=228, Unknown=31, NotChecked=0, Total=342 [2021-10-28 09:22:50,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-28 09:22:50,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 107. [2021-10-28 09:22:50,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.3773584905660377) internal successors, (146), 106 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:22:50,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 146 transitions. [2021-10-28 09:22:50,893 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 146 transitions. Word has length 14 [2021-10-28 09:22:50,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:22:50,894 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 146 transitions. [2021-10-28 09:22:50,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:22:50,894 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 146 transitions. [2021-10-28 09:22:50,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 09:22:50,896 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:22:50,896 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:22:50,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:22:51,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:22:51,113 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:22:51,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:22:51,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1963663166, now seen corresponding path program 1 times [2021-10-28 09:22:51,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:22:51,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772684193] [2021-10-28 09:22:51,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:22:51,115 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:22:51,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:22:51,117 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:22:51,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 09:22:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:22:51,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:22:51,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:22:53,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:22:53,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:22:58,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:22:58,362 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:22:58,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772684193] [2021-10-28 09:22:58,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772684193] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:22:58,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:22:58,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-28 09:22:58,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281749167] [2021-10-28 09:22:58,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:22:58,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:22:58,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:22:58,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:22:58,366 INFO L87 Difference]: Start difference. First operand 107 states and 146 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:04,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:04,288 INFO L93 Difference]: Finished difference Result 184 states and 248 transitions. [2021-10-28 09:23:04,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:23:04,290 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-28 09:23:04,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:23:04,292 INFO L225 Difference]: With dead ends: 184 [2021-10-28 09:23:04,292 INFO L226 Difference]: Without dead ends: 116 [2021-10-28 09:23:04,294 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:23:04,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-28 09:23:04,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 107. [2021-10-28 09:23:04,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.3584905660377358) internal successors, (144), 106 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:04,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 144 transitions. [2021-10-28 09:23:04,309 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 144 transitions. Word has length 19 [2021-10-28 09:23:04,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:23:04,310 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 144 transitions. [2021-10-28 09:23:04,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:04,310 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 144 transitions. [2021-10-28 09:23:04,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 09:23:04,312 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:23:04,312 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:23:04,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:23:04,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:23:04,529 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:23:04,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:04,530 INFO L85 PathProgramCache]: Analyzing trace with hash -188655804, now seen corresponding path program 1 times [2021-10-28 09:23:04,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:23:04,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1831680745] [2021-10-28 09:23:04,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:04,532 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:23:04,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:23:04,533 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:23:04,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 09:23:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:05,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:23:05,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:23:06,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:23:06,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:23:08,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:23:08,129 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:23:08,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1831680745] [2021-10-28 09:23:08,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1831680745] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:23:08,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:23:08,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-10-28 09:23:08,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135298119] [2021-10-28 09:23:08,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:23:08,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:23:08,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:23:08,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:23:08,132 INFO L87 Difference]: Start difference. First operand 107 states and 144 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:15,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:15,770 INFO L93 Difference]: Finished difference Result 139 states and 179 transitions. [2021-10-28 09:23:15,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:23:15,770 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-28 09:23:15,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:23:15,772 INFO L225 Difference]: With dead ends: 139 [2021-10-28 09:23:15,773 INFO L226 Difference]: Without dead ends: 136 [2021-10-28 09:23:15,774 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:23:15,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-28 09:23:15,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 109. [2021-10-28 09:23:15,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.3518518518518519) internal successors, (146), 108 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:15,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 146 transitions. [2021-10-28 09:23:15,790 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 146 transitions. Word has length 19 [2021-10-28 09:23:15,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:23:15,790 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 146 transitions. [2021-10-28 09:23:15,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:15,791 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 146 transitions. [2021-10-28 09:23:15,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 09:23:15,792 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:23:15,793 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:23:15,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:23:16,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:23:16,007 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:23:16,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:16,007 INFO L85 PathProgramCache]: Analyzing trace with hash 291898349, now seen corresponding path program 1 times [2021-10-28 09:23:16,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:23:16,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1310985484] [2021-10-28 09:23:16,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:16,009 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:23:16,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:23:16,011 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:23:16,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 09:23:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:16,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:23:16,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:23:19,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:23:19,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:23:23,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:23:23,985 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:23:23,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1310985484] [2021-10-28 09:23:23,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1310985484] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:23:23,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:23:23,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-28 09:23:23,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47968425] [2021-10-28 09:23:23,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:23:23,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:23:23,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:23:23,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:23:23,990 INFO L87 Difference]: Start difference. First operand 109 states and 146 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:30,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:30,546 INFO L93 Difference]: Finished difference Result 127 states and 164 transitions. [2021-10-28 09:23:30,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:23:30,548 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-28 09:23:30,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:23:30,552 INFO L225 Difference]: With dead ends: 127 [2021-10-28 09:23:30,552 INFO L226 Difference]: Without dead ends: 118 [2021-10-28 09:23:30,563 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:23:30,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-28 09:23:30,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 109. [2021-10-28 09:23:30,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.3333333333333333) internal successors, (144), 108 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:30,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 144 transitions. [2021-10-28 09:23:30,585 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 144 transitions. Word has length 20 [2021-10-28 09:23:30,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:23:30,589 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 144 transitions. [2021-10-28 09:23:30,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:30,590 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 144 transitions. [2021-10-28 09:23:30,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 09:23:30,593 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:23:30,594 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:23:30,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:23:30,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:23:30,795 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:23:30,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:30,795 INFO L85 PathProgramCache]: Analyzing trace with hash 302239975, now seen corresponding path program 1 times [2021-10-28 09:23:30,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:23:30,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [844000866] [2021-10-28 09:23:30,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:30,798 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:23:30,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:23:30,800 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:23:30,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 09:23:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:31,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:23:31,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:23:32,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:23:32,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:23:34,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:23:34,357 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:23:34,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [844000866] [2021-10-28 09:23:34,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [844000866] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:23:34,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:23:34,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-28 09:23:34,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432652640] [2021-10-28 09:23:34,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:23:34,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:23:34,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:23:34,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:23:34,361 INFO L87 Difference]: Start difference. First operand 109 states and 144 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:39,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:39,950 INFO L93 Difference]: Finished difference Result 121 states and 155 transitions. [2021-10-28 09:23:39,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:23:39,952 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-28 09:23:39,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:23:39,954 INFO L225 Difference]: With dead ends: 121 [2021-10-28 09:23:39,954 INFO L226 Difference]: Without dead ends: 118 [2021-10-28 09:23:39,955 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:23:39,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-28 09:23:39,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 109. [2021-10-28 09:23:39,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.3333333333333333) internal successors, (144), 108 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:39,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 144 transitions. [2021-10-28 09:23:39,972 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 144 transitions. Word has length 21 [2021-10-28 09:23:39,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:23:39,973 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 144 transitions. [2021-10-28 09:23:39,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:39,974 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 144 transitions. [2021-10-28 09:23:39,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 09:23:39,976 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:23:39,976 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:23:40,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:23:40,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:23:40,189 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:23:40,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:40,190 INFO L85 PathProgramCache]: Analyzing trace with hash 839109257, now seen corresponding path program 1 times [2021-10-28 09:23:40,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:23:40,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [648822366] [2021-10-28 09:23:40,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:40,191 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:23:40,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:23:40,193 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:23:40,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 09:23:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:40,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 09:23:40,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:23:41,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-10-28 09:23:43,625 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 09:23:43,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 21 [2021-10-28 09:23:47,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:23:47,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:23:53,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:23:53,230 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:23:53,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [648822366] [2021-10-28 09:23:53,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [648822366] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:23:53,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:23:53,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-10-28 09:23:53,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623578487] [2021-10-28 09:23:53,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:23:53,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:23:53,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:23:53,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:23:53,234 INFO L87 Difference]: Start difference. First operand 109 states and 144 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:24:27,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:24:27,243 INFO L93 Difference]: Finished difference Result 192 states and 246 transitions. [2021-10-28 09:24:27,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:24:27,327 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-28 09:24:27,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:24:27,329 INFO L225 Difference]: With dead ends: 192 [2021-10-28 09:24:27,329 INFO L226 Difference]: Without dead ends: 124 [2021-10-28 09:24:27,330 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-10-28 09:24:27,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-28 09:24:27,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 106. [2021-10-28 09:24:27,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.3142857142857143) internal successors, (138), 105 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:24:27,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 138 transitions. [2021-10-28 09:24:27,345 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 138 transitions. Word has length 21 [2021-10-28 09:24:27,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:24:27,346 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 138 transitions. [2021-10-28 09:24:27,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:24:27,346 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 138 transitions. [2021-10-28 09:24:27,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 09:24:27,348 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:24:27,348 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:24:27,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:24:27,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:24:27,561 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:24:27,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:24:27,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1575840196, now seen corresponding path program 1 times [2021-10-28 09:24:27,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:24:27,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456985432] [2021-10-28 09:24:27,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:24:27,562 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:24:27,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:24:27,565 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:24:27,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 09:24:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:24:28,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:24:28,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:24:36,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:24:36,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:24:44,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:24:44,167 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:24:44,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456985432] [2021-10-28 09:24:44,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456985432] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:24:44,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:24:44,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-28 09:24:44,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440164034] [2021-10-28 09:24:44,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:24:44,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:24:44,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:24:44,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:24:44,171 INFO L87 Difference]: Start difference. First operand 106 states and 138 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:24:53,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:24:53,315 INFO L93 Difference]: Finished difference Result 135 states and 171 transitions. [2021-10-28 09:24:53,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:24:53,562 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-28 09:24:53,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:24:53,564 INFO L225 Difference]: With dead ends: 135 [2021-10-28 09:24:53,564 INFO L226 Difference]: Without dead ends: 115 [2021-10-28 09:24:53,565 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:24:53,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-28 09:24:53,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 106. [2021-10-28 09:24:53,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.3047619047619048) internal successors, (137), 105 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:24:53,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 137 transitions. [2021-10-28 09:24:53,581 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 137 transitions. Word has length 22 [2021-10-28 09:24:53,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:24:53,582 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 137 transitions. [2021-10-28 09:24:53,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:24:53,583 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 137 transitions. [2021-10-28 09:24:53,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 09:24:53,584 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:24:53,584 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:24:53,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:24:53,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:24:53,793 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:24:53,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:24:53,794 INFO L85 PathProgramCache]: Analyzing trace with hash 328100550, now seen corresponding path program 1 times [2021-10-28 09:24:53,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:24:53,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524971726] [2021-10-28 09:24:53,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:24:53,795 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:24:53,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:24:53,797 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:24:53,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-28 09:24:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:24:54,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:24:54,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:24:57,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:24:57,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:25:03,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:03,263 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:25:03,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524971726] [2021-10-28 09:25:03,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1524971726] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:25:03,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:25:03,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-28 09:25:03,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852680637] [2021-10-28 09:25:03,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:25:03,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:25:03,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:25:03,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:25:03,267 INFO L87 Difference]: Start difference. First operand 106 states and 137 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:25:44,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:25:44,650 INFO L93 Difference]: Finished difference Result 177 states and 220 transitions. [2021-10-28 09:25:44,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:25:44,945 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-28 09:25:44,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:25:44,946 INFO L225 Difference]: With dead ends: 177 [2021-10-28 09:25:44,946 INFO L226 Difference]: Without dead ends: 149 [2021-10-28 09:25:44,949 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-10-28 09:25:44,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-10-28 09:25:44,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 93. [2021-10-28 09:25:44,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.2608695652173914) internal successors, (116), 92 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:25:44,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 116 transitions. [2021-10-28 09:25:44,962 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 116 transitions. Word has length 23 [2021-10-28 09:25:44,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:25:44,962 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 116 transitions. [2021-10-28 09:25:44,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:25:44,963 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 116 transitions. [2021-10-28 09:25:44,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 09:25:44,964 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:25:44,964 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:25:44,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-10-28 09:25:45,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:25:45,181 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:25:45,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:45,182 INFO L85 PathProgramCache]: Analyzing trace with hash -105632341, now seen corresponding path program 1 times [2021-10-28 09:25:45,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:25:45,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [216839025] [2021-10-28 09:25:45,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:45,183 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:25:45,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:25:45,184 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:25:45,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-28 09:25:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:45,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:25:45,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:49,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:49,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:25:54,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:54,415 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:25:54,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [216839025] [2021-10-28 09:25:54,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [216839025] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:25:54,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:25:54,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-10-28 09:25:54,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045581873] [2021-10-28 09:25:54,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:25:54,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:25:54,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:25:54,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:25:54,419 INFO L87 Difference]: Start difference. First operand 93 states and 116 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:27:04,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:27:04,368 INFO L93 Difference]: Finished difference Result 124 states and 145 transitions. [2021-10-28 09:27:04,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:27:04,369 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-28 09:27:04,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:27:04,371 INFO L225 Difference]: With dead ends: 124 [2021-10-28 09:27:04,372 INFO L226 Difference]: Without dead ends: 121 [2021-10-28 09:27:04,373 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-10-28 09:27:04,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-10-28 09:27:04,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 94. [2021-10-28 09:27:04,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.2580645161290323) internal successors, (117), 93 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:27:04,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 117 transitions. [2021-10-28 09:27:04,400 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 117 transitions. Word has length 23 [2021-10-28 09:27:04,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:27:04,400 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 117 transitions. [2021-10-28 09:27:04,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:27:04,400 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 117 transitions. [2021-10-28 09:27:04,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 09:27:04,401 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:27:04,401 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:27:04,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:27:04,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:27:04,605 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:27:04,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:27:04,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2123579340, now seen corresponding path program 1 times [2021-10-28 09:27:04,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:27:04,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339148459] [2021-10-28 09:27:04,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:27:04,607 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:27:04,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:27:04,608 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:27:04,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-28 09:27:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:27:05,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 09:27:05,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:27:06,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-10-28 09:27:09,770 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 09:27:09,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 21 [2021-10-28 09:27:16,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:27:16,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:27:26,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:27:26,425 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:27:26,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339148459] [2021-10-28 09:27:26,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339148459] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:27:26,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:27:26,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-10-28 09:27:26,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371859170] [2021-10-28 09:27:26,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:27:26,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:27:26,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:27:26,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:27:26,429 INFO L87 Difference]: Start difference. First operand 94 states and 117 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:27:38,668 WARN L207 SmtUtils]: Spent 5.21 s on a formula simplification. DAG size of input: 53 DAG size of output: 34 [2021-10-28 09:27:45,083 WARN L207 SmtUtils]: Spent 5.50 s on a formula simplification. DAG size of input: 54 DAG size of output: 35 [2021-10-28 09:28:02,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:28:02,878 INFO L93 Difference]: Finished difference Result 169 states and 206 transitions. [2021-10-28 09:28:02,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:28:02,880 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-28 09:28:02,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:28:02,881 INFO L225 Difference]: With dead ends: 169 [2021-10-28 09:28:02,882 INFO L226 Difference]: Without dead ends: 111 [2021-10-28 09:28:02,883 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-10-28 09:28:02,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-28 09:28:02,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 91. [2021-10-28 09:28:02,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.2444444444444445) internal successors, (112), 90 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:28:02,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 112 transitions. [2021-10-28 09:28:02,899 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 112 transitions. Word has length 23 [2021-10-28 09:28:02,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:28:02,900 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 112 transitions. [2021-10-28 09:28:02,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:28:02,901 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 112 transitions. [2021-10-28 09:28:02,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 09:28:02,901 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:28:02,902 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:28:02,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-28 09:28:03,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:28:03,117 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:28:03,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:28:03,118 INFO L85 PathProgramCache]: Analyzing trace with hash -640851047, now seen corresponding path program 1 times [2021-10-28 09:28:03,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:28:03,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [962829370] [2021-10-28 09:28:03,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:28:03,119 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:28:03,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:28:03,120 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:28:03,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-28 09:28:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:28:03,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 09:28:03,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:28:10,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:28:10,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:28:24,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:28:24,002 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:28:24,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [962829370] [2021-10-28 09:28:24,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [962829370] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:28:24,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:28:24,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2021-10-28 09:28:24,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228418487] [2021-10-28 09:28:24,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-28 09:28:24,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:28:24,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 09:28:24,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-10-28 09:28:24,006 INFO L87 Difference]: Start difference. First operand 91 states and 112 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:28:40,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:28:40,745 INFO L93 Difference]: Finished difference Result 100 states and 120 transitions. [2021-10-28 09:28:40,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:28:40,746 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-28 09:28:40,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:28:40,747 INFO L225 Difference]: With dead ends: 100 [2021-10-28 09:28:40,747 INFO L226 Difference]: Without dead ends: 88 [2021-10-28 09:28:40,748 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 20.4s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2021-10-28 09:28:40,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-28 09:28:40,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-10-28 09:28:40,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.2413793103448276) internal successors, (108), 87 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:28:40,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2021-10-28 09:28:40,761 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 23 [2021-10-28 09:28:40,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:28:40,761 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2021-10-28 09:28:40,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:28:40,762 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2021-10-28 09:28:40,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 09:28:40,763 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:28:40,763 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:28:40,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-28 09:28:40,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:28:40,972 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:28:40,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:28:40,973 INFO L85 PathProgramCache]: Analyzing trace with hash 941904828, now seen corresponding path program 1 times [2021-10-28 09:28:40,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:28:40,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907150340] [2021-10-28 09:28:40,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:28:40,974 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:28:40,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:28:40,975 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:28:40,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-28 09:28:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:28:41,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 09:28:41,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:28:46,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:28:46,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:28:55,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:28:55,636 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:28:55,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907150340] [2021-10-28 09:28:55,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907150340] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:28:55,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:28:55,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-10-28 09:28:55,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256344720] [2021-10-28 09:28:55,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:28:55,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:28:55,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:28:55,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:28:55,639 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:29:04,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:29:04,443 INFO L93 Difference]: Finished difference Result 97 states and 116 transitions. [2021-10-28 09:29:04,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:29:04,444 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-28 09:29:04,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:29:04,445 INFO L225 Difference]: With dead ends: 97 [2021-10-28 09:29:04,445 INFO L226 Difference]: Without dead ends: 85 [2021-10-28 09:29:04,446 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-10-28 09:29:04,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-10-28 09:29:04,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-10-28 09:29:04,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.2380952380952381) internal successors, (104), 84 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:29:04,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 104 transitions. [2021-10-28 09:29:04,458 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 104 transitions. Word has length 25 [2021-10-28 09:29:04,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:29:04,458 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 104 transitions. [2021-10-28 09:29:04,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:29:04,459 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 104 transitions. [2021-10-28 09:29:04,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 09:29:04,460 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:29:04,460 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:29:04,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-10-28 09:29:04,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:29:04,672 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:29:04,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:29:04,673 INFO L85 PathProgramCache]: Analyzing trace with hash 782702068, now seen corresponding path program 1 times [2021-10-28 09:29:04,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:29:04,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762617618] [2021-10-28 09:29:04,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:29:04,673 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:29:04,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:29:04,675 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:29:04,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-28 09:29:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:29:09,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:29:09,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:29:17,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:29:17,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:29:45,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:29:45,505 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:29:45,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762617618] [2021-10-28 09:29:45,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1762617618] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:29:45,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:29:45,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-28 09:29:45,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439314030] [2021-10-28 09:29:45,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:29:45,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:29:45,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:29:45,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:29:45,508 INFO L87 Difference]: Start difference. First operand 85 states and 104 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:30:36,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:30:36,874 INFO L93 Difference]: Finished difference Result 144 states and 170 transitions. [2021-10-28 09:30:36,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:30:36,934 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-28 09:30:36,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:30:36,936 INFO L225 Difference]: With dead ends: 144 [2021-10-28 09:30:36,936 INFO L226 Difference]: Without dead ends: 129 [2021-10-28 09:30:36,936 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:30:36,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-28 09:30:36,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 79. [2021-10-28 09:30:36,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.2179487179487178) internal successors, (95), 78 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:30:36,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 95 transitions. [2021-10-28 09:30:36,951 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 95 transitions. Word has length 26 [2021-10-28 09:30:36,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:30:36,951 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 95 transitions. [2021-10-28 09:30:36,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:30:36,952 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 95 transitions. [2021-10-28 09:30:36,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 09:30:36,952 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:30:36,953 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:30:37,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-28 09:30:37,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:30:37,177 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:30:37,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:30:37,178 INFO L85 PathProgramCache]: Analyzing trace with hash -485446016, now seen corresponding path program 1 times [2021-10-28 09:30:37,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:30:37,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236338512] [2021-10-28 09:30:37,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:30:37,178 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:30:37,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:30:37,179 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:30:37,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-28 09:30:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:30:37,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 09:30:37,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:30:45,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:30:45,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:31:00,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:31:00,331 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:31:00,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236338512] [2021-10-28 09:31:00,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1236338512] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:31:00,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:31:00,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 20 [2021-10-28 09:31:00,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019614274] [2021-10-28 09:31:00,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-28 09:31:00,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:31:00,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-28 09:31:00,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2021-10-28 09:31:00,335 INFO L87 Difference]: Start difference. First operand 79 states and 95 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:31:45,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:31:45,598 INFO L93 Difference]: Finished difference Result 86 states and 101 transitions. [2021-10-28 09:31:45,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:31:45,599 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-28 09:31:45,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:31:45,600 INFO L225 Difference]: With dead ends: 86 [2021-10-28 09:31:45,601 INFO L226 Difference]: Without dead ends: 69 [2021-10-28 09:31:45,602 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=192, Invalid=620, Unknown=0, NotChecked=0, Total=812 [2021-10-28 09:31:45,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-28 09:31:45,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-10-28 09:31:45,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 68 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:31:45,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2021-10-28 09:31:45,616 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 27 [2021-10-28 09:31:45,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:31:45,617 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2021-10-28 09:31:45,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:31:45,617 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2021-10-28 09:31:45,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-28 09:31:45,617 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:31:45,618 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:31:45,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-28 09:31:45,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:31:45,818 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:31:45,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:31:45,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1972844972, now seen corresponding path program 1 times [2021-10-28 09:31:45,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:31:45,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951666661] [2021-10-28 09:31:45,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:31:45,819 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:31:45,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:31:45,820 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:31:45,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-28 09:31:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:31:47,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:31:47,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:31:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:31:55,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:32:04,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:04,265 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:32:04,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951666661] [2021-10-28 09:32:04,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951666661] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:32:04,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:32:04,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-28 09:32:04,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792056722] [2021-10-28 09:32:04,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:32:04,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:32:04,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:32:04,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:32:04,268 INFO L87 Difference]: Start difference. First operand 69 states and 84 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:12,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:12,343 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2021-10-28 09:32:12,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:32:12,344 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-28 09:32:12,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:12,345 INFO L225 Difference]: With dead ends: 78 [2021-10-28 09:32:12,345 INFO L226 Difference]: Without dead ends: 69 [2021-10-28 09:32:12,345 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:32:12,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-28 09:32:12,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-10-28 09:32:12,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.2058823529411764) internal successors, (82), 68 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:12,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 82 transitions. [2021-10-28 09:32:12,356 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 82 transitions. Word has length 37 [2021-10-28 09:32:12,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:12,356 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 82 transitions. [2021-10-28 09:32:12,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:12,357 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 82 transitions. [2021-10-28 09:32:12,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-28 09:32:12,358 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:12,358 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:12,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-28 09:32:12,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:32:12,585 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:32:12,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:12,585 INFO L85 PathProgramCache]: Analyzing trace with hash -515625948, now seen corresponding path program 1 times [2021-10-28 09:32:12,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:32:12,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313655581] [2021-10-28 09:32:12,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:12,586 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:32:12,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:32:12,587 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:32:12,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-28 09:32:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:14,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 09:32:14,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:32:15,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-10-28 09:32:18,701 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 09:32:18,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 21 [2021-10-28 09:32:33,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:33,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:32:41,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:41,690 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:32:41,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313655581] [2021-10-28 09:32:41,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313655581] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:32:41,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:32:41,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-10-28 09:32:41,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143935007] [2021-10-28 09:32:41,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:32:41,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:32:41,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:32:41,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:32:41,692 INFO L87 Difference]: Start difference. First operand 69 states and 82 transitions. Second operand has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:59,940 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-28 09:32:59,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2021-10-28 09:32:59,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-28 09:33:00,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:33:00,142 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:662) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:281) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:93) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:201) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:886) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:783) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Broken pipe at java.base/java.io.FileOutputStream.writeBytes(Native Method) at java.base/java.io.FileOutputStream.write(FileOutputStream.java:354) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 35 more [2021-10-28 09:33:00,145 INFO L168 Benchmark]: Toolchain (without parser) took 776715.96 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 50.0 MB in the beginning and 37.7 MB in the end (delta: 12.2 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:33:00,145 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 67.1 MB. Free memory is still 49.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:33:00,146 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.02 ms. Allocated memory is still 67.1 MB. Free memory was 49.8 MB in the beginning and 46.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:33:00,146 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.52 ms. Allocated memory is still 67.1 MB. Free memory was 46.7 MB in the beginning and 43.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:33:00,146 INFO L168 Benchmark]: Boogie Preprocessor took 77.89 ms. Allocated memory is still 67.1 MB. Free memory was 43.1 MB in the beginning and 39.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:33:00,147 INFO L168 Benchmark]: RCFGBuilder took 41933.23 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 39.6 MB in the beginning and 56.1 MB in the end (delta: -16.5 MB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:33:00,147 INFO L168 Benchmark]: TraceAbstraction took 733962.33 ms. Allocated memory is still 81.8 MB. Free memory was 55.7 MB in the beginning and 37.7 MB in the end (delta: 18.0 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:33:00,149 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 67.1 MB. Free memory is still 49.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 657.02 ms. Allocated memory is still 67.1 MB. Free memory was 49.8 MB in the beginning and 46.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 78.52 ms. Allocated memory is still 67.1 MB. Free memory was 46.7 MB in the beginning and 43.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 77.89 ms. Allocated memory is still 67.1 MB. Free memory was 43.1 MB in the beginning and 39.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 41933.23 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 39.6 MB in the beginning and 56.1 MB in the end (delta: -16.5 MB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 733962.33 ms. Allocated memory is still 81.8 MB. Free memory was 55.7 MB in the beginning and 37.7 MB in the end (delta: 18.0 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f009b950-9977-4ebc-bcb4-76ebdb1009c5/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...