./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.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_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/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_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/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_c4fe66a7-1831-4241-b84b-f070638c65a3/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 56fa69f51cecff86efdf0a61690ed015021e7cc9e751ed1d6e6cce84bff6d69c ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:39:27,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:39:27,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:39:27,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:39:27,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:39:27,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:39:27,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:39:27,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:39:27,411 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:39:27,412 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:39:27,413 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:39:27,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:39:27,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:39:27,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:39:27,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:39:27,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:39:27,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:39:27,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:39:27,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:39:27,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:39:27,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:39:27,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:39:27,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:39:27,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:39:27,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:39:27,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:39:27,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:39:27,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:39:27,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:39:27,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:39:27,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:39:27,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:39:27,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:39:27,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:39:27,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:39:27,444 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:39:27,445 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:39:27,445 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:39:27,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:39:27,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:39:27,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:39:27,449 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:39:27,472 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:39:27,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:39:27,473 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:39:27,473 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:39:27,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:39:27,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:39:27,475 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:39:27,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:39:27,476 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:39:27,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:39:27,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:39:27,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:39:27,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:39:27,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:39:27,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:39:27,478 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:39:27,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:39:27,478 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:39:27,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:39:27,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:39:27,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:39:27,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:39:27,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:39:27,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:39:27,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:39:27,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:39:27,486 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:39:27,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:39:27,486 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:39:27,487 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:39:27,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:39:27,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:39:27,487 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_c4fe66a7-1831-4241-b84b-f070638c65a3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56fa69f51cecff86efdf0a61690ed015021e7cc9e751ed1d6e6cce84bff6d69c [2021-10-28 09:39:27,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:39:27,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:39:27,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:39:27,755 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:39:27,756 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:39:27,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2021-10-28 09:39:27,830 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/data/6e19e5be9/4019b548b3a04ccaa115b2f06e39303f/FLAG57fdded55 [2021-10-28 09:39:28,279 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:39:28,280 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2021-10-28 09:39:28,287 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/data/6e19e5be9/4019b548b3a04ccaa115b2f06e39303f/FLAG57fdded55 [2021-10-28 09:39:28,681 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/data/6e19e5be9/4019b548b3a04ccaa115b2f06e39303f [2021-10-28 09:39:28,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:39:28,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:39:28,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:39:28,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:39:28,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:39:28,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:39:28" (1/1) ... [2021-10-28 09:39:28,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fd36416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:39:28, skipping insertion in model container [2021-10-28 09:39:28,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:39:28" (1/1) ... [2021-10-28 09:39:28,700 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:39:28,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:39:28,911 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_c4fe66a7-1831-4241-b84b-f070638c65a3/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c[423,436] [2021-10-28 09:39:28,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:39:28,962 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:39:28,975 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_c4fe66a7-1831-4241-b84b-f070638c65a3/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c[423,436] [2021-10-28 09:39:29,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:39:29,018 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:39:29,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:39:29 WrapperNode [2021-10-28 09:39:29,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:39:29,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:39:29,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:39:29,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:39:29,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:39:29" (1/1) ... [2021-10-28 09:39:29,057 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:39:29" (1/1) ... [2021-10-28 09:39:29,083 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:39:29,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:39:29,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:39:29,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:39:29,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:39:29" (1/1) ... [2021-10-28 09:39:29,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:39:29" (1/1) ... [2021-10-28 09:39:29,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:39:29" (1/1) ... [2021-10-28 09:39:29,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:39:29" (1/1) ... [2021-10-28 09:39:29,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:39:29" (1/1) ... [2021-10-28 09:39:29,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:39:29" (1/1) ... [2021-10-28 09:39:29,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:39:29" (1/1) ... [2021-10-28 09:39:29,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:39:29,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:39:29,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:39:29,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:39:29,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:39:29" (1/1) ... [2021-10-28 09:39:29,141 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:39:29,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:39:29,170 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:39:29,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:39:29,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:39:29,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:39:29,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:39:29,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:39:29,737 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:39:29,748 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-10-28 09:39:29,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:39:29 BoogieIcfgContainer [2021-10-28 09:39:29,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:39:29,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:39:29,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:39:29,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:39:29,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:39:28" (1/3) ... [2021-10-28 09:39:29,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91fbd89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:39:29, skipping insertion in model container [2021-10-28 09:39:29,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:39:29" (2/3) ... [2021-10-28 09:39:29,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91fbd89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:39:29, skipping insertion in model container [2021-10-28 09:39:29,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:39:29" (3/3) ... [2021-10-28 09:39:29,758 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2021-10-28 09:39:29,763 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:39:29,763 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:39:29,806 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:39:29,813 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 09:39:29,813 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 09:39:29,829 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 70 states have (on average 1.7714285714285714) internal successors, (124), 71 states have internal predecessors, (124), 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 09:39:29,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 09:39:29,836 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:29,836 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 09:39:29,837 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:39:29,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:29,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1243249868, now seen corresponding path program 1 times [2021-10-28 09:39:29,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:29,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721538619] [2021-10-28 09:39:29,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:29,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:30,107 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 09:39:30,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:30,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721538619] [2021-10-28 09:39:30,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721538619] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:39:30,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:39:30,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:39:30,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480901751] [2021-10-28 09:39:30,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:39:30,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:30,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:39:30,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:39:30,131 INFO L87 Difference]: Start difference. First operand has 72 states, 70 states have (on average 1.7714285714285714) internal successors, (124), 71 states have internal predecessors, (124), 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 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 09:39:30,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:30,170 INFO L93 Difference]: Finished difference Result 150 states and 251 transitions. [2021-10-28 09:39:30,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:39:30,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 09:39:30,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:30,182 INFO L225 Difference]: With dead ends: 150 [2021-10-28 09:39:30,182 INFO L226 Difference]: Without dead ends: 68 [2021-10-28 09:39:30,185 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:39:30,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-28 09:39:30,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-10-28 09:39:30,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.507462686567164) internal successors, (101), 67 states have internal predecessors, (101), 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 09:39:30,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 101 transitions. [2021-10-28 09:39:30,223 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 101 transitions. Word has length 25 [2021-10-28 09:39:30,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:30,224 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 101 transitions. [2021-10-28 09:39:30,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 09:39:30,224 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 101 transitions. [2021-10-28 09:39:30,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 09:39:30,226 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:30,226 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 09:39:30,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:39:30,227 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:39:30,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:30,228 INFO L85 PathProgramCache]: Analyzing trace with hash 464393210, now seen corresponding path program 1 times [2021-10-28 09:39:30,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:30,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763188320] [2021-10-28 09:39:30,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:30,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:30,308 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 09:39:30,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:30,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763188320] [2021-10-28 09:39:30,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763188320] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:39:30,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:39:30,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:39:30,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277606048] [2021-10-28 09:39:30,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:39:30,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:30,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:39:30,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:39:30,313 INFO L87 Difference]: Start difference. First operand 68 states and 101 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 09:39:30,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:30,342 INFO L93 Difference]: Finished difference Result 88 states and 129 transitions. [2021-10-28 09:39:30,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:39:30,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 09:39:30,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:30,344 INFO L225 Difference]: With dead ends: 88 [2021-10-28 09:39:30,348 INFO L226 Difference]: Without dead ends: 68 [2021-10-28 09:39:30,364 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:39:30,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-28 09:39:30,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-10-28 09:39:30,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.492537313432836) internal successors, (100), 67 states have internal predecessors, (100), 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 09:39:30,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 100 transitions. [2021-10-28 09:39:30,374 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 100 transitions. Word has length 27 [2021-10-28 09:39:30,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:30,374 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 100 transitions. [2021-10-28 09:39:30,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 09:39:30,375 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 100 transitions. [2021-10-28 09:39:30,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 09:39:30,376 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:30,376 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 09:39:30,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:39:30,377 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:39:30,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:30,378 INFO L85 PathProgramCache]: Analyzing trace with hash 722558648, now seen corresponding path program 1 times [2021-10-28 09:39:30,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:30,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735462896] [2021-10-28 09:39:30,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:30,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:30,454 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 09:39:30,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:30,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735462896] [2021-10-28 09:39:30,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735462896] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:39:30,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:39:30,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:39:30,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132292073] [2021-10-28 09:39:30,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:39:30,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:30,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:39:30,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:39:30,469 INFO L87 Difference]: Start difference. First operand 68 states and 100 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 09:39:30,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:30,583 INFO L93 Difference]: Finished difference Result 119 states and 172 transitions. [2021-10-28 09:39:30,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:39:30,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 09:39:30,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:30,585 INFO L225 Difference]: With dead ends: 119 [2021-10-28 09:39:30,585 INFO L226 Difference]: Without dead ends: 69 [2021-10-28 09:39:30,586 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:39:30,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-28 09:39:30,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2021-10-28 09:39:30,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.453125) internal successors, (93), 64 states have internal predecessors, (93), 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 09:39:30,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 93 transitions. [2021-10-28 09:39:30,594 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 93 transitions. Word has length 27 [2021-10-28 09:39:30,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:30,595 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 93 transitions. [2021-10-28 09:39:30,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 09:39:30,595 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 93 transitions. [2021-10-28 09:39:30,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 09:39:30,597 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:30,597 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] [2021-10-28 09:39:30,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:39:30,597 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:39:30,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:30,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1336799219, now seen corresponding path program 1 times [2021-10-28 09:39:30,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:30,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477096898] [2021-10-28 09:39:30,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:30,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:30,643 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 09:39:30,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:30,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477096898] [2021-10-28 09:39:30,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477096898] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:39:30,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:39:30,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:39:30,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193698285] [2021-10-28 09:39:30,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:39:30,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:30,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:39:30,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:39:30,647 INFO L87 Difference]: Start difference. First operand 65 states and 93 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 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 09:39:30,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:30,682 INFO L93 Difference]: Finished difference Result 129 states and 183 transitions. [2021-10-28 09:39:30,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:39:30,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 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 30 [2021-10-28 09:39:30,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:30,684 INFO L225 Difference]: With dead ends: 129 [2021-10-28 09:39:30,684 INFO L226 Difference]: Without dead ends: 75 [2021-10-28 09:39:30,685 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:39:30,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-10-28 09:39:30,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2021-10-28 09:39:30,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.4225352112676057) internal successors, (101), 71 states have internal predecessors, (101), 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 09:39:30,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 101 transitions. [2021-10-28 09:39:30,694 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 101 transitions. Word has length 30 [2021-10-28 09:39:30,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:30,694 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 101 transitions. [2021-10-28 09:39:30,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 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 09:39:30,695 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 101 transitions. [2021-10-28 09:39:30,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 09:39:30,696 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:30,696 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] [2021-10-28 09:39:30,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:39:30,697 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:39:30,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:30,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1305570860, now seen corresponding path program 1 times [2021-10-28 09:39:30,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:30,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064210494] [2021-10-28 09:39:30,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:30,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:30,853 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 09:39:30,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:30,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064210494] [2021-10-28 09:39:30,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064210494] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:39:30,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:39:30,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:39:30,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143363744] [2021-10-28 09:39:30,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:39:30,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:30,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:39:30,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:39:30,856 INFO L87 Difference]: Start difference. First operand 72 states and 101 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 09:39:30,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:30,953 INFO L93 Difference]: Finished difference Result 136 states and 189 transitions. [2021-10-28 09:39:30,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:39:30,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 32 [2021-10-28 09:39:30,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:30,955 INFO L225 Difference]: With dead ends: 136 [2021-10-28 09:39:30,956 INFO L226 Difference]: Without dead ends: 73 [2021-10-28 09:39:30,957 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:39:30,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-28 09:39:30,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2021-10-28 09:39:30,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.393939393939394) internal successors, (92), 66 states have internal predecessors, (92), 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 09:39:30,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 92 transitions. [2021-10-28 09:39:30,965 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 92 transitions. Word has length 32 [2021-10-28 09:39:30,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:30,966 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 92 transitions. [2021-10-28 09:39:30,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 09:39:30,966 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 92 transitions. [2021-10-28 09:39:30,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 09:39:30,967 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:30,968 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 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 09:39:30,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:39:30,968 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:39:30,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:30,969 INFO L85 PathProgramCache]: Analyzing trace with hash 734686790, now seen corresponding path program 1 times [2021-10-28 09:39:30,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:30,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660427907] [2021-10-28 09:39:30,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:30,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:31,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:39:31,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:31,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660427907] [2021-10-28 09:39:31,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660427907] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:31,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703648711] [2021-10-28 09:39:31,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:31,014 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:31,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:39:31,016 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:39:31,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:39:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:31,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:39:31,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:39:31,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:39:31,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703648711] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:31,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:39:31,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-28 09:39:31,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043837303] [2021-10-28 09:39:31,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:39:31,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:31,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:39:31,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:39:31,280 INFO L87 Difference]: Start difference. First operand 67 states and 92 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 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 09:39:31,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:31,360 INFO L93 Difference]: Finished difference Result 160 states and 218 transitions. [2021-10-28 09:39:31,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:39:31,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 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 33 [2021-10-28 09:39:31,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:31,363 INFO L225 Difference]: With dead ends: 160 [2021-10-28 09:39:31,367 INFO L226 Difference]: Without dead ends: 103 [2021-10-28 09:39:31,368 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:39:31,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-28 09:39:31,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 72. [2021-10-28 09:39:31,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.380281690140845) internal successors, (98), 71 states have internal predecessors, (98), 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 09:39:31,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 98 transitions. [2021-10-28 09:39:31,388 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 98 transitions. Word has length 33 [2021-10-28 09:39:31,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:31,389 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 98 transitions. [2021-10-28 09:39:31,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 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 09:39:31,389 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 98 transitions. [2021-10-28 09:39:31,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-28 09:39:31,400 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:31,401 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 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 09:39:31,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:39:31,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:31,629 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:39:31,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:31,630 INFO L85 PathProgramCache]: Analyzing trace with hash -861199835, now seen corresponding path program 1 times [2021-10-28 09:39:31,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:31,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304808328] [2021-10-28 09:39:31,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:31,631 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:31,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:39:31,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:31,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304808328] [2021-10-28 09:39:31,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304808328] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:31,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449228282] [2021-10-28 09:39:31,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:31,750 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:31,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:39:31,756 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:39:31,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:39:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:31,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 09:39:31,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:39:32,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 09:39:32,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449228282] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:39:32,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:39:32,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2021-10-28 09:39:32,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272323172] [2021-10-28 09:39:32,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:39:32,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:32,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:39:32,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:39:32,107 INFO L87 Difference]: Start difference. First operand 72 states and 98 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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 09:39:32,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:32,301 INFO L93 Difference]: Finished difference Result 159 states and 215 transitions. [2021-10-28 09:39:32,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:39:32,302 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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 35 [2021-10-28 09:39:32,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:32,307 INFO L225 Difference]: With dead ends: 159 [2021-10-28 09:39:32,308 INFO L226 Difference]: Without dead ends: 90 [2021-10-28 09:39:32,311 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:39:32,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-10-28 09:39:32,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 62. [2021-10-28 09:39:32,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.360655737704918) internal successors, (83), 61 states have internal predecessors, (83), 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 09:39:32,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 83 transitions. [2021-10-28 09:39:32,336 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 83 transitions. Word has length 35 [2021-10-28 09:39:32,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:32,337 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 83 transitions. [2021-10-28 09:39:32,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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 09:39:32,338 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 83 transitions. [2021-10-28 09:39:32,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-28 09:39:32,342 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:32,342 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:39:32,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:39:32,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:32,543 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:39:32,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:32,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1367220671, now seen corresponding path program 1 times [2021-10-28 09:39:32,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:32,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751742101] [2021-10-28 09:39:32,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:32,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:32,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:39:32,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:32,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751742101] [2021-10-28 09:39:32,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751742101] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:32,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14900510] [2021-10-28 09:39:32,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:32,650 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:32,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:39:32,654 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:39:32,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 09:39:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:32,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 09:39:32,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:39:32,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 09:39:32,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14900510] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:39:32,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:39:32,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2021-10-28 09:39:32,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751134248] [2021-10-28 09:39:32,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:39:32,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:32,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:39:32,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:39:32,943 INFO L87 Difference]: Start difference. First operand 62 states and 83 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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 09:39:33,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:33,041 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2021-10-28 09:39:33,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:39:33,042 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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 09:39:33,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:33,045 INFO L225 Difference]: With dead ends: 77 [2021-10-28 09:39:33,046 INFO L226 Difference]: Without dead ends: 72 [2021-10-28 09:39:33,052 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:39:33,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-28 09:39:33,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 67. [2021-10-28 09:39:33,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.3333333333333333) internal successors, (88), 66 states have internal predecessors, (88), 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 09:39:33,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 88 transitions. [2021-10-28 09:39:33,064 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 88 transitions. Word has length 37 [2021-10-28 09:39:33,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:33,065 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 88 transitions. [2021-10-28 09:39:33,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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 09:39:33,065 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 88 transitions. [2021-10-28 09:39:33,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-28 09:39:33,066 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:33,067 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:39:33,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:39:33,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-28 09:39:33,292 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:39:33,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:33,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1369067713, now seen corresponding path program 1 times [2021-10-28 09:39:33,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:33,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412818477] [2021-10-28 09:39:33,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:33,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:33,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 09:39:33,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:33,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412818477] [2021-10-28 09:39:33,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412818477] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:39:33,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:39:33,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:39:33,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471564483] [2021-10-28 09:39:33,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:39:33,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:33,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:39:33,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:39:33,400 INFO L87 Difference]: Start difference. First operand 67 states and 88 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 09:39:33,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:33,426 INFO L93 Difference]: Finished difference Result 72 states and 92 transitions. [2021-10-28 09:39:33,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:39:33,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 09:39:33,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:33,427 INFO L225 Difference]: With dead ends: 72 [2021-10-28 09:39:33,427 INFO L226 Difference]: Without dead ends: 62 [2021-10-28 09:39:33,427 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:39:33,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-28 09:39:33,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-10-28 09:39:33,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.3114754098360655) internal successors, (80), 61 states have internal predecessors, (80), 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 09:39:33,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2021-10-28 09:39:33,433 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 37 [2021-10-28 09:39:33,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:33,433 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2021-10-28 09:39:33,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 09:39:33,434 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2021-10-28 09:39:33,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-28 09:39:33,435 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:33,435 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:39:33,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 09:39:33,435 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:39:33,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:33,436 INFO L85 PathProgramCache]: Analyzing trace with hash -896100667, now seen corresponding path program 1 times [2021-10-28 09:39:33,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:33,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734294390] [2021-10-28 09:39:33,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:33,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:33,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:39:33,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:33,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734294390] [2021-10-28 09:39:33,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734294390] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:33,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989811897] [2021-10-28 09:39:33,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:33,560 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:33,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:39:33,564 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:39:33,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 09:39:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:33,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 09:39:33,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:39:33,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 09:39:33,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989811897] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:39:33,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:39:33,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2021-10-28 09:39:33,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164219381] [2021-10-28 09:39:33,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:39:33,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:33,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:39:33,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:39:33,875 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 09:39:34,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:34,069 INFO L93 Difference]: Finished difference Result 91 states and 113 transitions. [2021-10-28 09:39:34,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:39:34,070 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 38 [2021-10-28 09:39:34,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:34,071 INFO L225 Difference]: With dead ends: 91 [2021-10-28 09:39:34,071 INFO L226 Difference]: Without dead ends: 66 [2021-10-28 09:39:34,072 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:39:34,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-28 09:39:34,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2021-10-28 09:39:34,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.278688524590164) internal successors, (78), 61 states have internal predecessors, (78), 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 09:39:34,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 78 transitions. [2021-10-28 09:39:34,078 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 78 transitions. Word has length 38 [2021-10-28 09:39:34,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:34,078 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 78 transitions. [2021-10-28 09:39:34,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 09:39:34,079 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 78 transitions. [2021-10-28 09:39:34,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-28 09:39:34,080 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:34,080 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:39:34,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:39:34,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-28 09:39:34,296 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:39:34,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:34,297 INFO L85 PathProgramCache]: Analyzing trace with hash -626672262, now seen corresponding path program 1 times [2021-10-28 09:39:34,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:34,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031857788] [2021-10-28 09:39:34,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:34,297 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:34,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:39:34,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:34,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031857788] [2021-10-28 09:39:34,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031857788] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:34,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201428611] [2021-10-28 09:39:34,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:34,425 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:34,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:39:34,429 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:39:34,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 09:39:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:34,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-28 09:39:34,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:39:34,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 09:39:34,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201428611] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:39:34,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:39:34,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2021-10-28 09:39:34,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865529261] [2021-10-28 09:39:34,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:39:34,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:34,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:39:34,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:39:34,865 INFO L87 Difference]: Start difference. First operand 62 states and 78 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 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 09:39:35,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:35,049 INFO L93 Difference]: Finished difference Result 67 states and 83 transitions. [2021-10-28 09:39:35,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:39:35,050 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 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 42 [2021-10-28 09:39:35,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:35,050 INFO L225 Difference]: With dead ends: 67 [2021-10-28 09:39:35,050 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 09:39:35,051 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-10-28 09:39:35,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 09:39:35,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 09:39:35,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 09:39:35,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 09:39:35,052 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2021-10-28 09:39:35,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:35,052 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:39:35,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 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 09:39:35,053 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 09:39:35,053 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 09:39:35,056 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:39:35,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:39:35,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:35,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 09:39:35,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:39:35,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:39:35,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:39:35,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:39:35,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:39:35,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:39:35,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:39:35,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:39:35,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:39:35,310 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:39:35,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:39:35,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:39:35,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:39:35,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:39:35,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:39:35,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:39:35,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:39:35,335 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:39:35,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:39:35,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:39:35,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:39:35,341 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:39:35,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:39:35,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:39:35,395 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 09:39:35,395 INFO L857 garLoopResultBuilder]: For program point L235(lines 235 244) no Hoare annotation was computed. [2021-10-28 09:39:35,396 INFO L857 garLoopResultBuilder]: For program point L235-2(lines 235 244) no Hoare annotation was computed. [2021-10-28 09:39:35,396 INFO L857 garLoopResultBuilder]: For program point L252(lines 252 256) no Hoare annotation was computed. [2021-10-28 09:39:35,396 INFO L857 garLoopResultBuilder]: For program point L186(lines 186 203) no Hoare annotation was computed. [2021-10-28 09:39:35,396 INFO L857 garLoopResultBuilder]: For program point L252-2(lines 252 256) no Hoare annotation was computed. [2021-10-28 09:39:35,396 INFO L857 garLoopResultBuilder]: For program point L186-2(lines 186 203) no Hoare annotation was computed. [2021-10-28 09:39:35,396 INFO L857 garLoopResultBuilder]: For program point L21(lines 21 26) no Hoare annotation was computed. [2021-10-28 09:39:35,397 INFO L857 garLoopResultBuilder]: For program point L21-1(lines 21 26) no Hoare annotation was computed. [2021-10-28 09:39:35,397 INFO L857 garLoopResultBuilder]: For program point L21-2(lines 21 26) no Hoare annotation was computed. [2021-10-28 09:39:35,397 INFO L857 garLoopResultBuilder]: For program point L21-3(lines 21 26) no Hoare annotation was computed. [2021-10-28 09:39:35,397 INFO L853 garLoopResultBuilder]: At program point L71(lines 20 73) the Hoare annotation is: (and (= ULTIMATE.start_base2flt_~m 0) (= ULTIMATE.start_base2flt_~__retres4~0 0)) [2021-10-28 09:39:35,397 INFO L853 garLoopResultBuilder]: At program point L71-1(lines 20 73) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-10-28 09:39:35,398 INFO L853 garLoopResultBuilder]: At program point L71-2(lines 20 73) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-10-28 09:39:35,398 INFO L853 garLoopResultBuilder]: At program point L71-3(lines 20 73) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-10-28 09:39:35,398 INFO L857 garLoopResultBuilder]: For program point L187(lines 187 192) no Hoare annotation was computed. [2021-10-28 09:39:35,399 INFO L857 garLoopResultBuilder]: For program point L171(lines 171 176) no Hoare annotation was computed. [2021-10-28 09:39:35,401 INFO L853 garLoopResultBuilder]: At program point L72(lines 16 74) the Hoare annotation is: (and (= ULTIMATE.start_base2flt_~m 0) (= |ULTIMATE.start_base2flt_#res| 0) (= ULTIMATE.start_base2flt_~__retres4~0 0)) [2021-10-28 09:39:35,401 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 43) no Hoare annotation was computed. [2021-10-28 09:39:35,401 INFO L853 garLoopResultBuilder]: At program point L72-1(lines 16 74) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-10-28 09:39:35,401 INFO L853 garLoopResultBuilder]: At program point L39-1(lines 29 44) the Hoare annotation is: false [2021-10-28 09:39:35,402 INFO L853 garLoopResultBuilder]: At program point L72-2(lines 16 74) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-10-28 09:39:35,402 INFO L857 garLoopResultBuilder]: For program point L39-2(lines 39 43) no Hoare annotation was computed. [2021-10-28 09:39:35,402 INFO L853 garLoopResultBuilder]: At program point L72-3(lines 16 74) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-10-28 09:39:35,402 INFO L853 garLoopResultBuilder]: At program point L39-3(lines 29 44) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-10-28 09:39:35,402 INFO L857 garLoopResultBuilder]: For program point L39-4(lines 39 43) no Hoare annotation was computed. [2021-10-28 09:39:35,402 INFO L853 garLoopResultBuilder]: At program point L39-5(lines 29 44) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-10-28 09:39:35,403 INFO L857 garLoopResultBuilder]: For program point L39-6(lines 39 43) no Hoare annotation was computed. [2021-10-28 09:39:35,403 INFO L853 garLoopResultBuilder]: At program point L39-7(lines 29 44) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-10-28 09:39:35,403 INFO L857 garLoopResultBuilder]: For program point L238(lines 238 242) no Hoare annotation was computed. [2021-10-28 09:39:35,404 INFO L857 garLoopResultBuilder]: For program point L238-2(lines 238 242) no Hoare annotation was computed. [2021-10-28 09:39:35,404 INFO L857 garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed. [2021-10-28 09:39:35,404 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 09:39:35,404 INFO L857 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-10-28 09:39:35,404 INFO L853 garLoopResultBuilder]: At program point L208(lines 149 210) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~sb~0 1) (= ULTIMATE.start_main_~tmp~2 1)) (<= (+ ULTIMATE.start_main_~sb~0 1) 0) (and (= ULTIMATE.start_main_~zero~0 0) (= ULTIMATE.start_mulflt_~__retres10~1 0))) [2021-10-28 09:39:35,406 INFO L857 garLoopResultBuilder]: For program point L27(lines 27 67) no Hoare annotation was computed. [2021-10-28 09:39:35,406 INFO L857 garLoopResultBuilder]: For program point L27-1(lines 27 67) no Hoare annotation was computed. [2021-10-28 09:39:35,406 INFO L857 garLoopResultBuilder]: For program point L27-2(lines 27 67) no Hoare annotation was computed. [2021-10-28 09:39:35,406 INFO L857 garLoopResultBuilder]: For program point L27-3(lines 27 67) no Hoare annotation was computed. [2021-10-28 09:39:35,407 INFO L853 garLoopResultBuilder]: At program point L209(lines 139 211) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~zero~0 0) (= ULTIMATE.start_mulflt_~__retres10~1 0) (= |ULTIMATE.start_mulflt_#res| 0)) (and (= ULTIMATE.start_main_~sb~0 1) (= ULTIMATE.start_main_~tmp~2 1)) (<= (+ ULTIMATE.start_main_~sb~0 1) 0)) [2021-10-28 09:39:35,407 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 09:39:35,407 INFO L857 garLoopResultBuilder]: For program point L177(lines 177 182) no Hoare annotation was computed. [2021-10-28 09:39:35,407 INFO L857 garLoopResultBuilder]: For program point L195(lines 195 200) no Hoare annotation was computed. [2021-10-28 09:39:35,407 INFO L857 garLoopResultBuilder]: For program point L30(lines 29 44) no Hoare annotation was computed. [2021-10-28 09:39:35,407 INFO L857 garLoopResultBuilder]: For program point L30-1(lines 29 44) no Hoare annotation was computed. [2021-10-28 09:39:35,407 INFO L857 garLoopResultBuilder]: For program point L30-2(lines 29 44) no Hoare annotation was computed. [2021-10-28 09:39:35,408 INFO L857 garLoopResultBuilder]: For program point L30-3(lines 29 44) no Hoare annotation was computed. [2021-10-28 09:39:35,408 INFO L853 garLoopResultBuilder]: At program point L65(lines 27 67) the Hoare annotation is: false [2021-10-28 09:39:35,408 INFO L853 garLoopResultBuilder]: At program point L65-1(lines 27 67) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-10-28 09:39:35,408 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 09:39:35,408 INFO L853 garLoopResultBuilder]: At program point L65-2(lines 27 67) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-10-28 09:39:35,408 INFO L853 garLoopResultBuilder]: At program point L65-3(lines 27 67) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-10-28 09:39:35,409 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2021-10-28 09:39:35,410 INFO L853 garLoopResultBuilder]: At program point L49-2(lines 49 64) the Hoare annotation is: false [2021-10-28 09:39:35,410 INFO L853 garLoopResultBuilder]: At program point L49-5(lines 49 64) the Hoare annotation is: false [2021-10-28 09:39:35,410 INFO L853 garLoopResultBuilder]: At program point L49-8(lines 49 64) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-10-28 09:39:35,410 INFO L853 garLoopResultBuilder]: At program point L49-11(lines 49 64) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2021-10-28 09:39:35,410 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 264) no Hoare annotation was computed. [2021-10-28 09:39:35,411 INFO L860 garLoopResultBuilder]: At program point L248-1(lines 248 264) the Hoare annotation is: true [2021-10-28 09:39:35,411 INFO L857 garLoopResultBuilder]: For program point L50(lines 49 64) no Hoare annotation was computed. [2021-10-28 09:39:35,411 INFO L857 garLoopResultBuilder]: For program point L50-1(lines 49 64) no Hoare annotation was computed. [2021-10-28 09:39:35,411 INFO L857 garLoopResultBuilder]: For program point L50-2(lines 49 64) no Hoare annotation was computed. [2021-10-28 09:39:35,412 INFO L857 garLoopResultBuilder]: For program point L50-3(lines 49 64) no Hoare annotation was computed. [2021-10-28 09:39:35,412 INFO L857 garLoopResultBuilder]: For program point L249(lines 249 258) no Hoare annotation was computed. [2021-10-28 09:39:35,412 INFO L857 garLoopResultBuilder]: For program point L249-2(lines 249 258) no Hoare annotation was computed. [2021-10-28 09:39:35,412 INFO L857 garLoopResultBuilder]: For program point L150(lines 150 156) no Hoare annotation was computed. [2021-10-28 09:39:35,413 INFO L857 garLoopResultBuilder]: For program point L150-2(lines 149 210) no Hoare annotation was computed. [2021-10-28 09:39:35,413 INFO L857 garLoopResultBuilder]: For program point L51(lines 49 64) no Hoare annotation was computed. [2021-10-28 09:39:35,413 INFO L857 garLoopResultBuilder]: For program point L51-1(lines 49 64) no Hoare annotation was computed. [2021-10-28 09:39:35,413 INFO L857 garLoopResultBuilder]: For program point L51-2(lines 49 64) no Hoare annotation was computed. [2021-10-28 09:39:35,413 INFO L857 garLoopResultBuilder]: For program point L51-3(lines 49 64) no Hoare annotation was computed. [2021-10-28 09:39:35,413 INFO L860 garLoopResultBuilder]: At program point L266(lines 212 268) the Hoare annotation is: true [2021-10-28 09:39:35,417 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:39:35,419 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:39:35,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:39:35 BoogieIcfgContainer [2021-10-28 09:39:35,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:39:35,456 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:39:35,456 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:39:35,457 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:39:35,457 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:39:29" (3/4) ... [2021-10-28 09:39:35,461 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:39:35,478 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-28 09:39:35,479 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-28 09:39:35,479 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:39:35,480 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:39:35,510 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (m == 0 && \result == 0) && __retres4 == 0 [2021-10-28 09:39:35,514 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((zero == 0 && __retres10 == 0) && \result == 0) || (sb == 1 && tmp == 1)) || sb + 1 <= 0 [2021-10-28 09:39:35,557 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:39:35,557 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:39:35,559 INFO L168 Benchmark]: Toolchain (without parser) took 6872.28 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 79.6 MB in the beginning and 94.2 MB in the end (delta: -14.6 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:39:35,559 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory is still 43.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:39:35,560 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.13 ms. Allocated memory is still 111.1 MB. Free memory was 79.4 MB in the beginning and 84.9 MB in the end (delta: -5.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:39:35,560 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.21 ms. Allocated memory is still 111.1 MB. Free memory was 84.9 MB in the beginning and 82.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:39:35,561 INFO L168 Benchmark]: Boogie Preprocessor took 30.64 ms. Allocated memory is still 111.1 MB. Free memory was 82.7 MB in the beginning and 81.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:39:35,561 INFO L168 Benchmark]: RCFGBuilder took 634.72 ms. Allocated memory is still 111.1 MB. Free memory was 81.1 MB in the beginning and 65.1 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:39:35,562 INFO L168 Benchmark]: TraceAbstraction took 5704.09 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 64.7 MB in the beginning and 99.5 MB in the end (delta: -34.8 MB). Peak memory consumption was 46.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:39:35,562 INFO L168 Benchmark]: Witness Printer took 100.94 ms. Allocated memory is still 134.2 MB. Free memory was 99.5 MB in the beginning and 94.2 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:39:35,565 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory is still 43.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 332.13 ms. Allocated memory is still 111.1 MB. Free memory was 79.4 MB in the beginning and 84.9 MB in the end (delta: -5.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.21 ms. Allocated memory is still 111.1 MB. Free memory was 84.9 MB in the beginning and 82.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.64 ms. Allocated memory is still 111.1 MB. Free memory was 82.7 MB in the beginning and 81.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 634.72 ms. Allocated memory is still 111.1 MB. Free memory was 81.1 MB in the beginning and 65.1 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5704.09 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 64.7 MB in the beginning and 99.5 MB in the end (delta: -34.8 MB). Peak memory consumption was 46.4 MB. Max. memory is 16.1 GB. * Witness Printer took 100.94 ms. Allocated memory is still 134.2 MB. Free memory was 99.5 MB in the beginning and 94.2 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. 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 - PositiveResult [Line: 9]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.6s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 906 SDtfs, 342 SDslu, 1714 SDs, 0 SdLazy, 515 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 247 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=0, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 81 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 24 PreInvPairs, 58 NumberOfFragments, 108 HoareAnnotationTreeSize, 24 FomulaSimplifications, 393 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 24 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 548 NumberOfCodeBlocks, 548 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 532 ConstructedInterpolants, 0 QuantifiedInterpolants, 947 SizeOfPredicates, 28 NumberOfNonLiveVariables, 794 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 16 InterpolantComputations, 10 PerfectInterpolantSequences, 15/31 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: m == 0 && __retres4 == 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: ((sb == 1 && tmp == 1) || sb + 1 <= 0) || (zero == 0 && __retres10 == 0) - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 139]: Loop Invariant Derived loop invariant: (((zero == 0 && __retres10 == 0) && \result == 0) || (sb == 1 && tmp == 1)) || sb + 1 <= 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 248]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 212]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (m == 0 && \result == 0) && __retres4 == 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-10-28 09:39:35,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fe66a7-1831-4241-b84b-f070638c65a3/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...