./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product37.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bb2a251-51a3-4b68-ad02-aadb547c2cea/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bb2a251-51a3-4b68-ad02-aadb547c2cea/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bb2a251-51a3-4b68-ad02-aadb547c2cea/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bb2a251-51a3-4b68-ad02-aadb547c2cea/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product37.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bb2a251-51a3-4b68-ad02-aadb547c2cea/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bb2a251-51a3-4b68-ad02-aadb547c2cea/bin/uautomizer-hJ6jxDFKc3 --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 89f6cb6604dd923271465945ed057d7bc077fdac ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:38:35,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:38:35,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:38:35,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:38:35,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:38:35,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:38:35,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:38:35,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:38:35,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:38:35,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:38:35,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:38:35,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:38:35,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:38:35,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:38:35,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:38:35,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:38:35,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:38:35,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:38:35,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:38:35,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:38:35,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:38:35,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:38:35,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:38:35,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:38:35,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:38:35,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:38:35,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:38:35,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:38:35,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:38:35,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:38:35,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:38:35,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:38:35,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:38:35,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:38:35,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:38:35,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:38:35,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:38:35,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:38:35,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:38:35,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:38:35,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:38:35,277 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bb2a251-51a3-4b68-ad02-aadb547c2cea/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:38:35,327 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:38:35,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:38:35,328 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:38:35,328 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:38:35,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:38:35,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:38:35,330 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:38:35,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:38:35,331 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:38:35,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:38:35,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:38:35,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:38:35,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:38:35,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:38:35,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:38:35,333 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:38:35,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:38:35,334 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:38:35,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:38:35,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:38:35,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:38:35,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:38:35,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:38:35,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:38:35,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:38:35,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:38:35,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:38:35,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:38:35,346 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:38:35,347 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:38:35,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:38:35,347 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:38:35,347 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_7bb2a251-51a3-4b68-ad02-aadb547c2cea/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bb2a251-51a3-4b68-ad02-aadb547c2cea/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89f6cb6604dd923271465945ed057d7bc077fdac [2021-10-15 19:38:35,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:38:35,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:38:35,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:38:35,765 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:38:35,766 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:38:35,768 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bb2a251-51a3-4b68-ad02-aadb547c2cea/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/product-lines/minepump_spec1_product37.cil.c [2021-10-15 19:38:35,861 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bb2a251-51a3-4b68-ad02-aadb547c2cea/bin/uautomizer-hJ6jxDFKc3/data/377afef39/0cb96abdfe9542ccae9560093afc43a2/FLAG95bfeaee5 [2021-10-15 19:38:36,565 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:38:36,565 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bb2a251-51a3-4b68-ad02-aadb547c2cea/sv-benchmarks/c/product-lines/minepump_spec1_product37.cil.c [2021-10-15 19:38:36,597 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bb2a251-51a3-4b68-ad02-aadb547c2cea/bin/uautomizer-hJ6jxDFKc3/data/377afef39/0cb96abdfe9542ccae9560093afc43a2/FLAG95bfeaee5 [2021-10-15 19:38:36,853 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bb2a251-51a3-4b68-ad02-aadb547c2cea/bin/uautomizer-hJ6jxDFKc3/data/377afef39/0cb96abdfe9542ccae9560093afc43a2 [2021-10-15 19:38:36,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:38:36,858 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:38:36,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:38:36,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:38:36,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:38:36,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:38:36" (1/1) ... [2021-10-15 19:38:36,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45fd1372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:36, skipping insertion in model container [2021-10-15 19:38:36,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:38:36" (1/1) ... [2021-10-15 19:38:36,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:38:36,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:38:37,390 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_7bb2a251-51a3-4b68-ad02-aadb547c2cea/sv-benchmarks/c/product-lines/minepump_spec1_product37.cil.c[13023,13036] [2021-10-15 19:38:37,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:38:37,481 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:38:37,556 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_7bb2a251-51a3-4b68-ad02-aadb547c2cea/sv-benchmarks/c/product-lines/minepump_spec1_product37.cil.c[13023,13036] [2021-10-15 19:38:37,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:38:37,600 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:38:37,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:37 WrapperNode [2021-10-15 19:38:37,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:38:37,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:38:37,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:38:37,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:38:37,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:37" (1/1) ... [2021-10-15 19:38:37,645 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:37" (1/1) ... [2021-10-15 19:38:37,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:38:37,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:38:37,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:38:37,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:38:37,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:37" (1/1) ... [2021-10-15 19:38:37,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:37" (1/1) ... [2021-10-15 19:38:37,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:37" (1/1) ... [2021-10-15 19:38:37,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:37" (1/1) ... [2021-10-15 19:38:37,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:37" (1/1) ... [2021-10-15 19:38:37,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:37" (1/1) ... [2021-10-15 19:38:37,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:37" (1/1) ... [2021-10-15 19:38:37,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:38:37,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:38:37,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:38:37,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:38:37,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:37" (1/1) ... [2021-10-15 19:38:37,843 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:38:37,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bb2a251-51a3-4b68-ad02-aadb547c2cea/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:38:37,872 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bb2a251-51a3-4b68-ad02-aadb547c2cea/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:38:37,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bb2a251-51a3-4b68-ad02-aadb547c2cea/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:38:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:38:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:38:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:38:37,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:38:39,010 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:38:39,022 INFO L299 CfgBuilder]: Removed 156 assume(true) statements. [2021-10-15 19:38:39,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:38:39 BoogieIcfgContainer [2021-10-15 19:38:39,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:38:39,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:38:39,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:38:39,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:38:39,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:38:36" (1/3) ... [2021-10-15 19:38:39,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592f2411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:38:39, skipping insertion in model container [2021-10-15 19:38:39,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:37" (2/3) ... [2021-10-15 19:38:39,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592f2411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:38:39, skipping insertion in model container [2021-10-15 19:38:39,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:38:39" (3/3) ... [2021-10-15 19:38:39,042 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product37.cil.c [2021-10-15 19:38:39,049 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:38:39,050 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-15 19:38:39,109 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:38:39,117 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, mConcurrency=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 [2021-10-15 19:38:39,117 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-15 19:38:39,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 111 places, 168 transitions, 336 flow [2021-10-15 19:38:39,230 INFO L129 PetriNetUnfolder]: 58/168 cut-off events. [2021-10-15 19:38:39,230 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:38:39,232 INFO L84 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 168 events. 58/168 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 445 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-10-15 19:38:39,233 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 168 transitions, 336 flow [2021-10-15 19:38:39,250 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 161 transitions, 322 flow [2021-10-15 19:38:39,259 INFO L129 PetriNetUnfolder]: 20/66 cut-off events. [2021-10-15 19:38:39,259 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:38:39,259 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:38:39,260 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:38:39,261 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:38:39,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:38:39,268 INFO L82 PathProgramCache]: Analyzing trace with hash 2109695399, now seen corresponding path program 1 times [2021-10-15 19:38:39,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:38:39,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235994733] [2021-10-15 19:38:39,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:38:39,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:38:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:38:39,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:38:39,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:38:39,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235994733] [2021-10-15 19:38:39,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235994733] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:38:39,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:38:39,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:38:39,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958145038] [2021-10-15 19:38:39,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:38:39,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:38:39,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:38:39,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:38:39,688 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 168 [2021-10-15 19:38:39,697 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 161 transitions, 322 flow. Second operand has 2 states, 2 states have (on average 161.5) internal successors, (323), 2 states have internal predecessors, (323), 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) [2021-10-15 19:38:39,697 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:38:39,698 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 168 [2021-10-15 19:38:39,699 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:38:39,755 INFO L129 PetriNetUnfolder]: 50/156 cut-off events. [2021-10-15 19:38:39,755 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:38:39,757 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 156 events. 50/156 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 418 event pairs, 0 based on Foata normal form. 4/108 useless extension candidates. Maximal degree in co-relation 156. Up to 8 conditions per place. [2021-10-15 19:38:39,760 INFO L132 encePairwiseOnDemand]: 163/168 looper letters, 0 selfloop transitions, 0 changer transitions 0/156 dead transitions. [2021-10-15 19:38:39,760 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 156 transitions, 312 flow [2021-10-15 19:38:39,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:38:39,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 19:38:39,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 327 transitions. [2021-10-15 19:38:39,797 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9732142857142857 [2021-10-15 19:38:39,798 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 327 transitions. [2021-10-15 19:38:39,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 327 transitions. [2021-10-15 19:38:39,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:38:39,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 327 transitions. [2021-10-15 19:38:39,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 163.5) internal successors, (327), 2 states have internal predecessors, (327), 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) [2021-10-15 19:38:39,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 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) [2021-10-15 19:38:39,829 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 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) [2021-10-15 19:38:39,832 INFO L186 Difference]: Start difference. First operand has 107 places, 161 transitions, 322 flow. Second operand 2 states and 327 transitions. [2021-10-15 19:38:39,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 156 transitions, 312 flow [2021-10-15 19:38:39,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 156 transitions, 312 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:38:39,855 INFO L242 Difference]: Finished difference. Result has 108 places, 156 transitions, 312 flow [2021-10-15 19:38:39,857 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=312, PETRI_PLACES=108, PETRI_TRANSITIONS=156} [2021-10-15 19:38:39,858 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, 1 predicate places. [2021-10-15 19:38:39,858 INFO L470 AbstractCegarLoop]: Abstraction has has 108 places, 156 transitions, 312 flow [2021-10-15 19:38:39,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 161.5) internal successors, (323), 2 states have internal predecessors, (323), 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) [2021-10-15 19:38:39,859 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:38:39,860 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:38:39,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:38:39,860 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:38:39,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:38:39,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1093063509, now seen corresponding path program 1 times [2021-10-15 19:38:39,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:38:39,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124446697] [2021-10-15 19:38:39,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:38:39,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:38:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:38:40,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:38:40,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:38:40,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124446697] [2021-10-15 19:38:40,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124446697] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:38:40,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:38:40,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:38:40,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882598820] [2021-10-15 19:38:40,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:38:40,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:38:40,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:38:40,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:38:40,034 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 168 [2021-10-15 19:38:40,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 156 transitions, 312 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 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) [2021-10-15 19:38:40,036 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:38:40,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 168 [2021-10-15 19:38:40,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:38:40,055 INFO L129 PetriNetUnfolder]: 21/65 cut-off events. [2021-10-15 19:38:40,058 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:38:40,061 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 65 events. 21/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 67. Up to 8 conditions per place. [2021-10-15 19:38:40,063 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 1 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2021-10-15 19:38:40,063 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 65 transitions, 134 flow [2021-10-15 19:38:40,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:38:40,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:38:40,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 477 transitions. [2021-10-15 19:38:40,068 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9464285714285714 [2021-10-15 19:38:40,068 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 477 transitions. [2021-10-15 19:38:40,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 477 transitions. [2021-10-15 19:38:40,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:38:40,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 477 transitions. [2021-10-15 19:38:40,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 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) [2021-10-15 19:38:40,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 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) [2021-10-15 19:38:40,084 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 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) [2021-10-15 19:38:40,085 INFO L186 Difference]: Start difference. First operand has 108 places, 156 transitions, 312 flow. Second operand 3 states and 477 transitions. [2021-10-15 19:38:40,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 65 transitions, 134 flow [2021-10-15 19:38:40,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 65 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:38:40,090 INFO L242 Difference]: Finished difference. Result has 48 places, 65 transitions, 132 flow [2021-10-15 19:38:40,090 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=48, PETRI_TRANSITIONS=65} [2021-10-15 19:38:40,099 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, -59 predicate places. [2021-10-15 19:38:40,099 INFO L470 AbstractCegarLoop]: Abstraction has has 48 places, 65 transitions, 132 flow [2021-10-15 19:38:40,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 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) [2021-10-15 19:38:40,100 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:38:40,100 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:38:40,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 19:38:40,101 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:38:40,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:38:40,105 INFO L82 PathProgramCache]: Analyzing trace with hash -720159228, now seen corresponding path program 1 times [2021-10-15 19:38:40,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:38:40,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120694093] [2021-10-15 19:38:40,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:38:40,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:38:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:38:40,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:38:40,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:38:40,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120694093] [2021-10-15 19:38:40,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120694093] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:38:40,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:38:40,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:38:40,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086368709] [2021-10-15 19:38:40,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:38:40,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:38:40,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:38:40,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:38:40,280 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 168 [2021-10-15 19:38:40,282 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 65 transitions, 132 flow. Second operand has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 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) [2021-10-15 19:38:40,282 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:38:40,283 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 168 [2021-10-15 19:38:40,283 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:38:40,509 INFO L129 PetriNetUnfolder]: 20/64 cut-off events. [2021-10-15 19:38:40,510 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:38:40,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 64 events. 20/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 71. Up to 7 conditions per place. [2021-10-15 19:38:40,511 INFO L132 encePairwiseOnDemand]: 164/168 looper letters, 3 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2021-10-15 19:38:40,511 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 64 transitions, 142 flow [2021-10-15 19:38:40,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:38:40,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:38:40,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 752 transitions. [2021-10-15 19:38:40,516 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-10-15 19:38:40,516 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 752 transitions. [2021-10-15 19:38:40,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 752 transitions. [2021-10-15 19:38:40,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:38:40,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 752 transitions. [2021-10-15 19:38:40,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.4) internal successors, (752), 5 states have internal predecessors, (752), 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) [2021-10-15 19:38:40,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 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) [2021-10-15 19:38:40,526 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 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) [2021-10-15 19:38:40,526 INFO L186 Difference]: Start difference. First operand has 48 places, 65 transitions, 132 flow. Second operand 5 states and 752 transitions. [2021-10-15 19:38:40,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 64 transitions, 142 flow [2021-10-15 19:38:40,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 64 transitions, 141 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:38:40,531 INFO L242 Difference]: Finished difference. Result has 51 places, 64 transitions, 135 flow [2021-10-15 19:38:40,531 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=51, PETRI_TRANSITIONS=64} [2021-10-15 19:38:40,531 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, -56 predicate places. [2021-10-15 19:38:40,532 INFO L470 AbstractCegarLoop]: Abstraction has has 51 places, 64 transitions, 135 flow [2021-10-15 19:38:40,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 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) [2021-10-15 19:38:40,533 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:38:40,533 INFO L254 CegarLoopForPetriNet]: 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] [2021-10-15 19:38:40,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 19:38:40,534 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:38:40,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:38:40,535 INFO L82 PathProgramCache]: Analyzing trace with hash 2091202829, now seen corresponding path program 1 times [2021-10-15 19:38:40,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:38:40,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034126188] [2021-10-15 19:38:40,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:38:40,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:38:40,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:38:40,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:38:40,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:38:40,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034126188] [2021-10-15 19:38:40,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034126188] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:38:40,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:38:40,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:38:40,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104303420] [2021-10-15 19:38:40,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:38:40,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:38:40,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:38:40,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:38:40,615 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 168 [2021-10-15 19:38:40,616 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 64 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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) [2021-10-15 19:38:40,617 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:38:40,617 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 168 [2021-10-15 19:38:40,617 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:38:40,695 INFO L129 PetriNetUnfolder]: 26/91 cut-off events. [2021-10-15 19:38:40,695 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:38:40,696 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 91 events. 26/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 110. Up to 9 conditions per place. [2021-10-15 19:38:40,696 INFO L132 encePairwiseOnDemand]: 158/168 looper letters, 8 selfloop transitions, 7 changer transitions 0/66 dead transitions. [2021-10-15 19:38:40,696 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 66 transitions, 169 flow [2021-10-15 19:38:40,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:38:40,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:38:40,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2021-10-15 19:38:40,699 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7738095238095238 [2021-10-15 19:38:40,700 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2021-10-15 19:38:40,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2021-10-15 19:38:40,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:38:40,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2021-10-15 19:38:40,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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) [2021-10-15 19:38:40,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 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) [2021-10-15 19:38:40,705 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 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) [2021-10-15 19:38:40,705 INFO L186 Difference]: Start difference. First operand has 51 places, 64 transitions, 135 flow. Second operand 3 states and 390 transitions. [2021-10-15 19:38:40,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 66 transitions, 169 flow [2021-10-15 19:38:40,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 66 transitions, 164 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-15 19:38:40,709 INFO L242 Difference]: Finished difference. Result has 52 places, 65 transitions, 168 flow [2021-10-15 19:38:40,726 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=52, PETRI_TRANSITIONS=65} [2021-10-15 19:38:40,726 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, -55 predicate places. [2021-10-15 19:38:40,726 INFO L470 AbstractCegarLoop]: Abstraction has has 52 places, 65 transitions, 168 flow [2021-10-15 19:38:40,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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) [2021-10-15 19:38:40,727 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:38:40,727 INFO L254 CegarLoopForPetriNet]: 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] [2021-10-15 19:38:40,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-15 19:38:40,728 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:38:40,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:38:40,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1513749629, now seen corresponding path program 1 times [2021-10-15 19:38:40,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:38:40,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209853516] [2021-10-15 19:38:40,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:38:40,744 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:38:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:38:40,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:38:40,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:38:40,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209853516] [2021-10-15 19:38:40,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209853516] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:38:40,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:38:40,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:38:40,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830653728] [2021-10-15 19:38:40,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:38:40,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:38:40,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:38:40,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:38:40,861 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 168 [2021-10-15 19:38:40,862 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 65 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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) [2021-10-15 19:38:40,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:38:40,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 168 [2021-10-15 19:38:40,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:38:40,961 INFO L129 PetriNetUnfolder]: 41/154 cut-off events. [2021-10-15 19:38:40,961 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-10-15 19:38:40,962 INFO L84 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 154 events. 41/154 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 291 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 196. Up to 14 conditions per place. [2021-10-15 19:38:40,963 INFO L132 encePairwiseOnDemand]: 162/168 looper letters, 9 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2021-10-15 19:38:40,963 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 198 flow [2021-10-15 19:38:40,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:38:40,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:38:40,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 435 transitions. [2021-10-15 19:38:40,967 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8630952380952381 [2021-10-15 19:38:40,967 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 435 transitions. [2021-10-15 19:38:40,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 435 transitions. [2021-10-15 19:38:40,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:38:40,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 435 transitions. [2021-10-15 19:38:40,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 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) [2021-10-15 19:38:40,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 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) [2021-10-15 19:38:40,974 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 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) [2021-10-15 19:38:40,974 INFO L186 Difference]: Start difference. First operand has 52 places, 65 transitions, 168 flow. Second operand 3 states and 435 transitions. [2021-10-15 19:38:40,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 198 flow [2021-10-15 19:38:40,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 68 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:38:40,979 INFO L242 Difference]: Finished difference. Result has 53 places, 67 transitions, 177 flow [2021-10-15 19:38:40,979 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=53, PETRI_TRANSITIONS=67} [2021-10-15 19:38:40,979 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, -54 predicate places. [2021-10-15 19:38:40,980 INFO L470 AbstractCegarLoop]: Abstraction has has 53 places, 67 transitions, 177 flow [2021-10-15 19:38:40,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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) [2021-10-15 19:38:40,981 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:38:40,981 INFO L254 CegarLoopForPetriNet]: 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] [2021-10-15 19:38:40,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-15 19:38:40,982 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:38:40,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:38:40,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1406926852, now seen corresponding path program 1 times [2021-10-15 19:38:40,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:38:40,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170872482] [2021-10-15 19:38:40,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:38:40,983 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:38:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:38:41,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:38:41,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:38:41,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170872482] [2021-10-15 19:38:41,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170872482] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:38:41,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:38:41,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 19:38:41,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282240433] [2021-10-15 19:38:41,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:38:41,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:38:41,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:38:41,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:38:41,109 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 168 [2021-10-15 19:38:41,110 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 67 transitions, 177 flow. Second operand has 6 states, 6 states have (on average 121.33333333333333) internal successors, (728), 6 states have internal predecessors, (728), 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) [2021-10-15 19:38:41,111 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:38:41,111 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 168 [2021-10-15 19:38:41,111 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:38:41,289 INFO L129 PetriNetUnfolder]: 87/327 cut-off events. [2021-10-15 19:38:41,289 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-15 19:38:41,290 INFO L84 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 327 events. 87/327 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1213 event pairs, 2 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 424. Up to 27 conditions per place. [2021-10-15 19:38:41,294 INFO L132 encePairwiseOnDemand]: 156/168 looper letters, 12 selfloop transitions, 12 changer transitions 0/75 dead transitions. [2021-10-15 19:38:41,294 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 75 transitions, 245 flow [2021-10-15 19:38:41,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 19:38:41,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 19:38:41,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 866 transitions. [2021-10-15 19:38:41,300 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7363945578231292 [2021-10-15 19:38:41,302 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 866 transitions. [2021-10-15 19:38:41,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 866 transitions. [2021-10-15 19:38:41,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:38:41,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 866 transitions. [2021-10-15 19:38:41,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 123.71428571428571) internal successors, (866), 7 states have internal predecessors, (866), 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) [2021-10-15 19:38:41,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 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) [2021-10-15 19:38:41,315 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 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) [2021-10-15 19:38:41,315 INFO L186 Difference]: Start difference. First operand has 53 places, 67 transitions, 177 flow. Second operand 7 states and 866 transitions. [2021-10-15 19:38:41,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 75 transitions, 245 flow [2021-10-15 19:38:41,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 75 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:38:41,324 INFO L242 Difference]: Finished difference. Result has 61 places, 75 transitions, 251 flow [2021-10-15 19:38:41,324 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=251, PETRI_PLACES=61, PETRI_TRANSITIONS=75} [2021-10-15 19:38:41,325 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, -46 predicate places. [2021-10-15 19:38:41,325 INFO L470 AbstractCegarLoop]: Abstraction has has 61 places, 75 transitions, 251 flow [2021-10-15 19:38:41,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 121.33333333333333) internal successors, (728), 6 states have internal predecessors, (728), 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) [2021-10-15 19:38:41,326 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:38:41,326 INFO L254 CegarLoopForPetriNet]: 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] [2021-10-15 19:38:41,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-15 19:38:41,328 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:38:41,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:38:41,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1013899842, now seen corresponding path program 1 times [2021-10-15 19:38:41,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:38:41,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901518341] [2021-10-15 19:38:41,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:38:41,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:38:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:38:41,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:38:41,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:38:41,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901518341] [2021-10-15 19:38:41,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901518341] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:38:41,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:38:41,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:38:41,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236651153] [2021-10-15 19:38:41,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:38:41,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:38:41,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:38:41,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:38:41,496 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 168 [2021-10-15 19:38:41,498 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 75 transitions, 251 flow. Second operand has 5 states, 5 states have (on average 114.2) internal successors, (571), 5 states have internal predecessors, (571), 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) [2021-10-15 19:38:41,498 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:38:41,498 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 168 [2021-10-15 19:38:41,498 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:38:41,601 INFO L129 PetriNetUnfolder]: 58/247 cut-off events. [2021-10-15 19:38:41,601 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2021-10-15 19:38:41,602 INFO L84 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 247 events. 58/247 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 740 event pairs, 1 based on Foata normal form. 5/198 useless extension candidates. Maximal degree in co-relation 363. Up to 21 conditions per place. [2021-10-15 19:38:41,604 INFO L132 encePairwiseOnDemand]: 156/168 looper letters, 15 selfloop transitions, 14 changer transitions 0/80 dead transitions. [2021-10-15 19:38:41,604 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 80 transitions, 310 flow [2021-10-15 19:38:41,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:38:41,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:38:41,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 705 transitions. [2021-10-15 19:38:41,608 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6994047619047619 [2021-10-15 19:38:41,609 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 705 transitions. [2021-10-15 19:38:41,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 705 transitions. [2021-10-15 19:38:41,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:38:41,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 705 transitions. [2021-10-15 19:38:41,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 117.5) internal successors, (705), 6 states have internal predecessors, (705), 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) [2021-10-15 19:38:41,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 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) [2021-10-15 19:38:41,624 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 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) [2021-10-15 19:38:41,624 INFO L186 Difference]: Start difference. First operand has 61 places, 75 transitions, 251 flow. Second operand 6 states and 705 transitions. [2021-10-15 19:38:41,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 80 transitions, 310 flow [2021-10-15 19:38:41,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 80 transitions, 301 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-10-15 19:38:41,632 INFO L242 Difference]: Finished difference. Result has 68 places, 80 transitions, 314 flow [2021-10-15 19:38:41,633 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=314, PETRI_PLACES=68, PETRI_TRANSITIONS=80} [2021-10-15 19:38:41,635 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, -39 predicate places. [2021-10-15 19:38:41,636 INFO L470 AbstractCegarLoop]: Abstraction has has 68 places, 80 transitions, 314 flow [2021-10-15 19:38:41,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.2) internal successors, (571), 5 states have internal predecessors, (571), 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) [2021-10-15 19:38:41,636 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:38:41,637 INFO L254 CegarLoopForPetriNet]: 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] [2021-10-15 19:38:41,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-15 19:38:41,637 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:38:41,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:38:41,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1648611201, now seen corresponding path program 1 times [2021-10-15 19:38:41,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:38:41,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125196026] [2021-10-15 19:38:41,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:38:41,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:38:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:38:41,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:38:41,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:38:41,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125196026] [2021-10-15 19:38:41,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125196026] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:38:41,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:38:41,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:38:41,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770659608] [2021-10-15 19:38:41,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:38:41,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:38:41,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:38:41,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:38:41,762 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 168 [2021-10-15 19:38:41,763 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 80 transitions, 314 flow. Second operand has 5 states, 5 states have (on average 140.8) internal successors, (704), 5 states have internal predecessors, (704), 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) [2021-10-15 19:38:41,763 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:38:41,763 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 168 [2021-10-15 19:38:41,763 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:38:41,986 INFO L129 PetriNetUnfolder]: 205/903 cut-off events. [2021-10-15 19:38:41,987 INFO L130 PetriNetUnfolder]: For 232/232 co-relation queries the response was YES. [2021-10-15 19:38:41,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1653 conditions, 903 events. 205/903 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5460 event pairs, 3 based on Foata normal form. 0/737 useless extension candidates. Maximal degree in co-relation 1641. Up to 114 conditions per place. [2021-10-15 19:38:41,998 INFO L132 encePairwiseOnDemand]: 160/168 looper letters, 14 selfloop transitions, 15 changer transitions 0/100 dead transitions. [2021-10-15 19:38:41,998 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 100 transitions, 422 flow [2021-10-15 19:38:41,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 19:38:41,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-15 19:38:42,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1152 transitions. [2021-10-15 19:38:42,004 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2021-10-15 19:38:42,004 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1152 transitions. [2021-10-15 19:38:42,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1152 transitions. [2021-10-15 19:38:42,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:38:42,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1152 transitions. [2021-10-15 19:38:42,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 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) [2021-10-15 19:38:42,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 168.0) internal successors, (1512), 9 states have internal predecessors, (1512), 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) [2021-10-15 19:38:42,016 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 168.0) internal successors, (1512), 9 states have internal predecessors, (1512), 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) [2021-10-15 19:38:42,017 INFO L186 Difference]: Start difference. First operand has 68 places, 80 transitions, 314 flow. Second operand 8 states and 1152 transitions. [2021-10-15 19:38:42,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 100 transitions, 422 flow [2021-10-15 19:38:42,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 100 transitions, 422 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:38:42,034 INFO L242 Difference]: Finished difference. Result has 81 places, 94 transitions, 424 flow [2021-10-15 19:38:42,035 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=424, PETRI_PLACES=81, PETRI_TRANSITIONS=94} [2021-10-15 19:38:42,035 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, -26 predicate places. [2021-10-15 19:38:42,035 INFO L470 AbstractCegarLoop]: Abstraction has has 81 places, 94 transitions, 424 flow [2021-10-15 19:38:42,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 140.8) internal successors, (704), 5 states have internal predecessors, (704), 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) [2021-10-15 19:38:42,036 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:38:42,036 INFO L254 CegarLoopForPetriNet]: 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] [2021-10-15 19:38:42,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-15 19:38:42,037 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:38:42,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:38:42,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1974587593, now seen corresponding path program 1 times [2021-10-15 19:38:42,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:38:42,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455257677] [2021-10-15 19:38:42,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:38:42,038 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:38:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:38:42,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:38:42,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:38:42,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455257677] [2021-10-15 19:38:42,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455257677] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:38:42,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:38:42,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:38:42,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252902125] [2021-10-15 19:38:42,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:38:42,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:38:42,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:38:42,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:38:42,144 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 168 [2021-10-15 19:38:42,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 94 transitions, 424 flow. Second operand has 5 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 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) [2021-10-15 19:38:42,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:38:42,145 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 168 [2021-10-15 19:38:42,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:38:42,488 INFO L129 PetriNetUnfolder]: 349/1565 cut-off events. [2021-10-15 19:38:42,488 INFO L130 PetriNetUnfolder]: For 980/980 co-relation queries the response was YES. [2021-10-15 19:38:42,496 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3417 conditions, 1565 events. 349/1565 cut-off events. For 980/980 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 9923 event pairs, 5 based on Foata normal form. 0/1328 useless extension candidates. Maximal degree in co-relation 3399. Up to 192 conditions per place. [2021-10-15 19:38:42,505 INFO L132 encePairwiseOnDemand]: 156/168 looper letters, 62 selfloop transitions, 34 changer transitions 0/159 dead transitions. [2021-10-15 19:38:42,505 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 159 transitions, 970 flow [2021-10-15 19:38:42,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-15 19:38:42,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-15 19:38:42,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1066 transitions. [2021-10-15 19:38:42,510 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.705026455026455 [2021-10-15 19:38:42,511 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1066 transitions. [2021-10-15 19:38:42,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1066 transitions. [2021-10-15 19:38:42,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:38:42,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1066 transitions. [2021-10-15 19:38:42,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 118.44444444444444) internal successors, (1066), 9 states have internal predecessors, (1066), 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) [2021-10-15 19:38:42,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 168.0) internal successors, (1680), 10 states have internal predecessors, (1680), 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) [2021-10-15 19:38:42,522 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 168.0) internal successors, (1680), 10 states have internal predecessors, (1680), 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) [2021-10-15 19:38:42,522 INFO L186 Difference]: Start difference. First operand has 81 places, 94 transitions, 424 flow. Second operand 9 states and 1066 transitions. [2021-10-15 19:38:42,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 159 transitions, 970 flow [2021-10-15 19:38:42,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 159 transitions, 970 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:38:42,539 INFO L242 Difference]: Finished difference. Result has 94 places, 122 transitions, 684 flow [2021-10-15 19:38:42,539 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=684, PETRI_PLACES=94, PETRI_TRANSITIONS=122} [2021-10-15 19:38:42,540 INFO L334 CegarLoopForPetriNet]: 107 programPoint places, -13 predicate places. [2021-10-15 19:38:42,540 INFO L470 AbstractCegarLoop]: Abstraction has has 94 places, 122 transitions, 684 flow [2021-10-15 19:38:42,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 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) [2021-10-15 19:38:42,542 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:38:42,543 INFO L254 CegarLoopForPetriNet]: 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] [2021-10-15 19:38:42,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-15 19:38:42,543 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:38:42,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:38:42,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1705214514, now seen corresponding path program 1 times [2021-10-15 19:38:42,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:38:42,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248137176] [2021-10-15 19:38:42,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:38:42,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:38:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:38:42,669 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:38:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:38:42,813 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:38:42,813 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 19:38:42,815 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:38:42,817 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:38:42,818 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:38:42,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-15 19:38:42,826 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:38:42,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:38:42 BoogieIcfgContainer [2021-10-15 19:38:42,976 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:38:42,980 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:38:42,980 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:38:42,980 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:38:42,981 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:38:39" (3/4) ... [2021-10-15 19:38:42,983 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-15 19:38:43,110 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bb2a251-51a3-4b68-ad02-aadb547c2cea/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:38:43,111 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:38:43,113 INFO L168 Benchmark]: Toolchain (without parser) took 6253.89 ms. Allocated memory was 121.6 MB in the beginning and 165.7 MB in the end (delta: 44.0 MB). Free memory was 96.4 MB in the beginning and 97.7 MB in the end (delta: -1.3 MB). Peak memory consumption was 43.0 MB. Max. memory is 16.1 GB. [2021-10-15 19:38:43,113 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 81.8 MB. Free memory was 56.9 MB in the beginning and 56.8 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:38:43,114 INFO L168 Benchmark]: CACSL2BoogieTranslator took 742.71 ms. Allocated memory is still 121.6 MB. Free memory was 96.0 MB in the beginning and 86.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:38:43,115 INFO L168 Benchmark]: Boogie Procedure Inliner took 129.09 ms. Allocated memory is still 121.6 MB. Free memory was 86.8 MB in the beginning and 83.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:38:43,115 INFO L168 Benchmark]: Boogie Preprocessor took 98.11 ms. Allocated memory is still 121.6 MB. Free memory was 83.2 MB in the beginning and 80.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:38:43,116 INFO L168 Benchmark]: RCFGBuilder took 1193.31 ms. Allocated memory is still 121.6 MB. Free memory was 80.5 MB in the beginning and 70.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:38:43,117 INFO L168 Benchmark]: TraceAbstraction took 3949.51 ms. Allocated memory was 121.6 MB in the beginning and 165.7 MB in the end (delta: 44.0 MB). Free memory was 70.3 MB in the beginning and 111.4 MB in the end (delta: -41.0 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:38:43,117 INFO L168 Benchmark]: Witness Printer took 130.78 ms. Allocated memory is still 165.7 MB. Free memory was 110.3 MB in the beginning and 97.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:38:43,121 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 81.8 MB. Free memory was 56.9 MB in the beginning and 56.8 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 742.71 ms. Allocated memory is still 121.6 MB. Free memory was 96.0 MB in the beginning and 86.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 129.09 ms. Allocated memory is still 121.6 MB. Free memory was 86.8 MB in the beginning and 83.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 98.11 ms. Allocated memory is still 121.6 MB. Free memory was 83.2 MB in the beginning and 80.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1193.31 ms. Allocated memory is still 121.6 MB. Free memory was 80.5 MB in the beginning and 70.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3949.51 ms. Allocated memory was 121.6 MB in the beginning and 165.7 MB in the end (delta: 44.0 MB). Free memory was 70.3 MB in the beginning and 111.4 MB in the end (delta: -41.0 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. * Witness Printer took 130.78 ms. Allocated memory is still 165.7 MB. Free memory was 110.3 MB in the beginning and 97.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 553]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L219] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L416] int cleanupTimeShifts = 4; [L598] int pumpRunning = 0; [L599] int systemActive = 1; [L842] int waterLevel = 1; [L843] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L497] int retValue_acc ; [L498] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L584] int retValue_acc ; [L587] retValue_acc = 1 [L588] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L504] tmp = valid_product() [L506] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L777] int splverifierCounter ; [L778] int tmp ; [L779] int tmp___0 ; [L780] int tmp___1 ; [L781] int tmp___2 ; [L784] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L786] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L788] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L794] tmp = __VERIFIER_nondet_int() [L796] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L860] COND TRUE waterLevel < 2 [L861] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L804] tmp___0 = __VERIFIER_nondet_int() [L806] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L872] COND FALSE !(\read(methaneLevelCritical)) [L875] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L814] tmp___2 = __VERIFIER_nondet_int() [L816] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L605] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L612] COND TRUE \read(systemActive) [L660] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L663] COND FALSE !(\read(pumpRunning)) [L634] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L637] COND TRUE ! pumpRunning [L757] int retValue_acc ; [L758] int tmp ; [L759] int tmp___0 ; [L922] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L925] COND FALSE !(waterLevel < 2) [L929] retValue_acc = 0 [L930] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L763] tmp = isHighWaterSensorDry() [L765] COND FALSE !(\read(tmp)) [L768] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L770] retValue_acc = tmp___0 [L771] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L639] tmp = isHighWaterLevel() [L641] COND TRUE \read(tmp) [L688] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L524] int tmp ; [L525] int tmp___0 ; [L881] int retValue_acc ; [L884] retValue_acc = methaneLevelCritical [L885] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L529] tmp = isMethaneLevelCritical() [L531] COND TRUE \read(tmp) [L712] int retValue_acc ; [L715] retValue_acc = pumpRunning [L716] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L533] tmp___0 = isPumpRunning() [L535] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L553] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - UnprovableResult [Line: 553]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 111 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 8.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3719.9ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1779.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 132.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 72 SDtfs, 128 SDslu, 98 SDs, 0 SdLazy, 159 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 408.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 229.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=684occurred in iteration=9, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 77.2ms SsaConstructionTime, 499.9ms SatisfiabilityAnalysisTime, 754.0ms InterpolantComputationTime, 262 NumberOfCodeBlocks, 262 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 221 ConstructedInterpolants, 0 QuantifiedInterpolants, 462 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-15 19:38:43,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bb2a251-51a3-4b68-ad02-aadb547c2cea/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...