./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product41.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_2816c015-6172-435d-8028-31cd55e2fc9e/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2816c015-6172-435d-8028-31cd55e2fc9e/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_2816c015-6172-435d-8028-31cd55e2fc9e/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2816c015-6172-435d-8028-31cd55e2fc9e/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2816c015-6172-435d-8028-31cd55e2fc9e/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_2816c015-6172-435d-8028-31cd55e2fc9e/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 026e71ea54e111bdd483d4a173c18e0292eb2170 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:03:24,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:03:24,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:03:24,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:03:24,087 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:03:24,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:03:24,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:03:24,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:03:24,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:03:24,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:03:24,112 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:03:24,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:03:24,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:03:24,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:03:24,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:03:24,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:03:24,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:03:24,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:03:24,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:03:24,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:03:24,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:03:24,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:03:24,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:03:24,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:03:24,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:03:24,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:03:24,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:03:24,171 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:03:24,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:03:24,173 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:03:24,174 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:03:24,175 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:03:24,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:03:24,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:03:24,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:03:24,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:03:24,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:03:24,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:03:24,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:03:24,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:03:24,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:03:24,186 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2816c015-6172-435d-8028-31cd55e2fc9e/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 20:03:24,240 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:03:24,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:03:24,241 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:03:24,241 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:03:24,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:03:24,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:03:24,244 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:03:24,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:03:24,244 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:03:24,244 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 20:03:24,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:03:24,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:03:24,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:03:24,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:03:24,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:03:24,247 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:03:24,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:03:24,248 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:03:24,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:03:24,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:03:24,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:03:24,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:03:24,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:03:24,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:03:24,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:03:24,250 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:03:24,250 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 20:03:24,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 20:03:24,251 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:03:24,253 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:03:24,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:03:24,253 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:03:24,254 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_2816c015-6172-435d-8028-31cd55e2fc9e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2816c015-6172-435d-8028-31cd55e2fc9e/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 026e71ea54e111bdd483d4a173c18e0292eb2170 [2021-10-15 20:03:24,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:03:24,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:03:24,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:03:24,611 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:03:24,612 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:03:24,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2816c015-6172-435d-8028-31cd55e2fc9e/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c [2021-10-15 20:03:24,687 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2816c015-6172-435d-8028-31cd55e2fc9e/bin/uautomizer-hJ6jxDFKc3/data/7dadbaea6/2e3219df718b47b2a5b90a80d0a1d18e/FLAGb2008f051 [2021-10-15 20:03:25,306 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:03:25,307 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2816c015-6172-435d-8028-31cd55e2fc9e/sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c [2021-10-15 20:03:25,327 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2816c015-6172-435d-8028-31cd55e2fc9e/bin/uautomizer-hJ6jxDFKc3/data/7dadbaea6/2e3219df718b47b2a5b90a80d0a1d18e/FLAGb2008f051 [2021-10-15 20:03:25,602 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2816c015-6172-435d-8028-31cd55e2fc9e/bin/uautomizer-hJ6jxDFKc3/data/7dadbaea6/2e3219df718b47b2a5b90a80d0a1d18e [2021-10-15 20:03:25,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:03:25,607 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:03:25,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:03:25,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:03:25,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:03:25,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:03:25" (1/1) ... [2021-10-15 20:03:25,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7511b2dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:03:25, skipping insertion in model container [2021-10-15 20:03:25,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:03:25" (1/1) ... [2021-10-15 20:03:25,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:03:25,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:03:26,048 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2816c015-6172-435d-8028-31cd55e2fc9e/sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c[17493,17506] [2021-10-15 20:03:26,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:03:26,078 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:03:26,201 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_2816c015-6172-435d-8028-31cd55e2fc9e/sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c[17493,17506] [2021-10-15 20:03:26,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:03:26,235 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:03:26,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:03:26 WrapperNode [2021-10-15 20:03:26,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:03:26,237 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:03:26,238 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:03:26,238 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:03:26,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:03:26" (1/1) ... [2021-10-15 20:03:26,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:03:26" (1/1) ... [2021-10-15 20:03:26,340 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:03:26,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:03:26,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:03:26,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:03:26,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:03:26" (1/1) ... [2021-10-15 20:03:26,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:03:26" (1/1) ... [2021-10-15 20:03:26,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:03:26" (1/1) ... [2021-10-15 20:03:26,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:03:26" (1/1) ... [2021-10-15 20:03:26,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:03:26" (1/1) ... [2021-10-15 20:03:26,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:03:26" (1/1) ... [2021-10-15 20:03:26,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:03:26" (1/1) ... [2021-10-15 20:03:26,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:03:26,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:03:26,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:03:26,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:03:26,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:03:26" (1/1) ... [2021-10-15 20:03:26,438 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:03:26,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2816c015-6172-435d-8028-31cd55e2fc9e/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:03:26,466 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2816c015-6172-435d-8028-31cd55e2fc9e/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:03:26,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2816c015-6172-435d-8028-31cd55e2fc9e/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:03:26,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:03:26,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 20:03:26,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:03:26,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:03:27,716 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:03:27,717 INFO L299 CfgBuilder]: Removed 114 assume(true) statements. [2021-10-15 20:03:27,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:03:27 BoogieIcfgContainer [2021-10-15 20:03:27,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:03:27,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:03:27,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:03:27,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:03:27,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:03:25" (1/3) ... [2021-10-15 20:03:27,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5367fcfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:03:27, skipping insertion in model container [2021-10-15 20:03:27,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:03:26" (2/3) ... [2021-10-15 20:03:27,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5367fcfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:03:27, skipping insertion in model container [2021-10-15 20:03:27,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:03:27" (3/3) ... [2021-10-15 20:03:27,732 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product41.cil.c [2021-10-15 20:03:27,738 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:03:27,739 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-15 20:03:27,801 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:03:27,809 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 20:03:27,809 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-15 20:03:27,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 87 places, 129 transitions, 258 flow [2021-10-15 20:03:27,869 INFO L129 PetriNetUnfolder]: 43/129 cut-off events. [2021-10-15 20:03:27,870 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:03:27,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 129 events. 43/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 270 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-10-15 20:03:27,872 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 129 transitions, 258 flow [2021-10-15 20:03:27,881 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 122 transitions, 244 flow [2021-10-15 20:03:27,892 INFO L129 PetriNetUnfolder]: 18/59 cut-off events. [2021-10-15 20:03:27,892 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:03:27,892 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:03:27,893 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:03:27,894 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 20:03:27,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:03:27,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1847621448, now seen corresponding path program 1 times [2021-10-15 20:03:27,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:03:27,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929423030] [2021-10-15 20:03:27,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:03:27,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:03:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:03:28,287 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 20:03:28,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:03:28,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929423030] [2021-10-15 20:03:28,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929423030] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:03:28,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:03:28,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 20:03:28,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828809499] [2021-10-15 20:03:28,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 20:03:28,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:03:28,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 20:03:28,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 20:03:28,323 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 129 [2021-10-15 20:03:28,328 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 122 transitions, 244 flow. Second operand has 2 states, 2 states have (on average 122.5) internal successors, (245), 2 states have internal predecessors, (245), 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 20:03:28,328 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:03:28,328 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 129 [2021-10-15 20:03:28,330 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:03:28,387 INFO L129 PetriNetUnfolder]: 35/117 cut-off events. [2021-10-15 20:03:28,403 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:03:28,404 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 117 events. 35/117 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 239 event pairs, 0 based on Foata normal form. 4/84 useless extension candidates. Maximal degree in co-relation 117. Up to 5 conditions per place. [2021-10-15 20:03:28,407 INFO L132 encePairwiseOnDemand]: 124/129 looper letters, 0 selfloop transitions, 0 changer transitions 0/117 dead transitions. [2021-10-15 20:03:28,407 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 117 transitions, 234 flow [2021-10-15 20:03:28,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 20:03:28,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 20:03:28,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 249 transitions. [2021-10-15 20:03:28,438 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9651162790697675 [2021-10-15 20:03:28,439 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 249 transitions. [2021-10-15 20:03:28,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 249 transitions. [2021-10-15 20:03:28,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:03:28,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 249 transitions. [2021-10-15 20:03:28,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 124.5) internal successors, (249), 2 states have internal predecessors, (249), 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 20:03:28,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 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 20:03:28,483 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 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 20:03:28,485 INFO L186 Difference]: Start difference. First operand has 83 places, 122 transitions, 244 flow. Second operand 2 states and 249 transitions. [2021-10-15 20:03:28,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 117 transitions, 234 flow [2021-10-15 20:03:28,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 117 transitions, 234 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:03:28,505 INFO L242 Difference]: Finished difference. Result has 84 places, 117 transitions, 234 flow [2021-10-15 20:03:28,508 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=234, PETRI_PLACES=84, PETRI_TRANSITIONS=117} [2021-10-15 20:03:28,509 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 1 predicate places. [2021-10-15 20:03:28,510 INFO L470 AbstractCegarLoop]: Abstraction has has 84 places, 117 transitions, 234 flow [2021-10-15 20:03:28,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 122.5) internal successors, (245), 2 states have internal predecessors, (245), 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 20:03:28,511 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:03:28,511 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 20:03:28,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 20:03:28,513 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 20:03:28,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:03:28,514 INFO L82 PathProgramCache]: Analyzing trace with hash 800864551, now seen corresponding path program 1 times [2021-10-15 20:03:28,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:03:28,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558375378] [2021-10-15 20:03:28,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:03:28,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:03:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:03:28,684 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 20:03:28,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:03:28,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558375378] [2021-10-15 20:03:28,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558375378] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:03:28,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:03:28,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:03:28,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853942887] [2021-10-15 20:03:28,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:03:28,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:03:28,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:03:28,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:03:28,692 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 129 [2021-10-15 20:03:28,693 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 117 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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 20:03:28,693 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:03:28,694 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 129 [2021-10-15 20:03:28,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:03:28,706 INFO L129 PetriNetUnfolder]: 16/52 cut-off events. [2021-10-15 20:03:28,715 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:03:28,715 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 52 events. 16/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 54. Up to 5 conditions per place. [2021-10-15 20:03:28,716 INFO L132 encePairwiseOnDemand]: 127/129 looper letters, 1 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2021-10-15 20:03:28,716 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 52 transitions, 108 flow [2021-10-15 20:03:28,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:03:28,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:03:28,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 360 transitions. [2021-10-15 20:03:28,725 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9302325581395349 [2021-10-15 20:03:28,726 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 360 transitions. [2021-10-15 20:03:28,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 360 transitions. [2021-10-15 20:03:28,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:03:28,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 360 transitions. [2021-10-15 20:03:28,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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 20:03:28,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 20:03:28,737 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 20:03:28,737 INFO L186 Difference]: Start difference. First operand has 84 places, 117 transitions, 234 flow. Second operand 3 states and 360 transitions. [2021-10-15 20:03:28,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 52 transitions, 108 flow [2021-10-15 20:03:28,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 52 transitions, 108 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:03:28,741 INFO L242 Difference]: Finished difference. Result has 40 places, 52 transitions, 106 flow [2021-10-15 20:03:28,743 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=40, PETRI_TRANSITIONS=52} [2021-10-15 20:03:28,748 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, -43 predicate places. [2021-10-15 20:03:28,749 INFO L470 AbstractCegarLoop]: Abstraction has has 40 places, 52 transitions, 106 flow [2021-10-15 20:03:28,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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 20:03:28,750 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:03:28,750 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 20:03:28,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 20:03:28,751 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 20:03:28,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:03:28,756 INFO L82 PathProgramCache]: Analyzing trace with hash -2126819203, now seen corresponding path program 1 times [2021-10-15 20:03:28,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:03:28,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074175805] [2021-10-15 20:03:28,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:03:28,758 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:03:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:03:28,938 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 20:03:28,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:03:28,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074175805] [2021-10-15 20:03:28,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074175805] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:03:28,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:03:28,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 20:03:28,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303331177] [2021-10-15 20:03:28,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 20:03:28,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:03:28,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 20:03:28,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-15 20:03:28,952 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 129 [2021-10-15 20:03:28,954 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 52 transitions, 106 flow. Second operand has 6 states, 6 states have (on average 111.0) internal successors, (666), 6 states have internal predecessors, (666), 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 20:03:28,954 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:03:28,954 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 129 [2021-10-15 20:03:28,955 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:03:29,260 INFO L129 PetriNetUnfolder]: 15/51 cut-off events. [2021-10-15 20:03:29,270 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:03:29,271 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 51 events. 15/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 34 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 58. Up to 4 conditions per place. [2021-10-15 20:03:29,272 INFO L132 encePairwiseOnDemand]: 125/129 looper letters, 3 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2021-10-15 20:03:29,272 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 51 transitions, 116 flow [2021-10-15 20:03:29,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 20:03:29,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 20:03:29,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 557 transitions. [2021-10-15 20:03:29,279 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8635658914728682 [2021-10-15 20:03:29,280 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 557 transitions. [2021-10-15 20:03:29,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 557 transitions. [2021-10-15 20:03:29,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:03:29,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 557 transitions. [2021-10-15 20:03:29,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 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 20:03:29,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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 20:03:29,290 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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 20:03:29,291 INFO L186 Difference]: Start difference. First operand has 40 places, 52 transitions, 106 flow. Second operand 5 states and 557 transitions. [2021-10-15 20:03:29,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 51 transitions, 116 flow [2021-10-15 20:03:29,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 51 transitions, 115 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:03:29,294 INFO L242 Difference]: Finished difference. Result has 43 places, 51 transitions, 109 flow [2021-10-15 20:03:29,295 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=109, PETRI_PLACES=43, PETRI_TRANSITIONS=51} [2021-10-15 20:03:29,295 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, -40 predicate places. [2021-10-15 20:03:29,296 INFO L470 AbstractCegarLoop]: Abstraction has has 43 places, 51 transitions, 109 flow [2021-10-15 20:03:29,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.0) internal successors, (666), 6 states have internal predecessors, (666), 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 20:03:29,297 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:03:29,297 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] [2021-10-15 20:03:29,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 20:03:29,298 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 20:03:29,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:03:29,299 INFO L82 PathProgramCache]: Analyzing trace with hash -306622024, now seen corresponding path program 1 times [2021-10-15 20:03:29,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:03:29,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56858218] [2021-10-15 20:03:29,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:03:29,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:03:29,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:03:29,406 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 20:03:29,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:03:29,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56858218] [2021-10-15 20:03:29,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56858218] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:03:29,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:03:29,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 20:03:29,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402271978] [2021-10-15 20:03:29,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:03:29,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:03:29,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:03:29,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:03:29,417 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 129 [2021-10-15 20:03:29,418 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 51 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 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 20:03:29,419 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:03:29,419 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 129 [2021-10-15 20:03:29,419 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:03:29,472 INFO L129 PetriNetUnfolder]: 22/79 cut-off events. [2021-10-15 20:03:29,472 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:03:29,475 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 79 events. 22/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 93. Up to 6 conditions per place. [2021-10-15 20:03:29,476 INFO L132 encePairwiseOnDemand]: 123/129 looper letters, 6 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2021-10-15 20:03:29,477 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 135 flow [2021-10-15 20:03:29,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:03:29,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:03:29,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 321 transitions. [2021-10-15 20:03:29,480 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8294573643410853 [2021-10-15 20:03:29,480 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 321 transitions. [2021-10-15 20:03:29,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 321 transitions. [2021-10-15 20:03:29,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:03:29,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 321 transitions. [2021-10-15 20:03:29,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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 20:03:29,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 20:03:29,486 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 20:03:29,487 INFO L186 Difference]: Start difference. First operand has 43 places, 51 transitions, 109 flow. Second operand 3 states and 321 transitions. [2021-10-15 20:03:29,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 135 flow [2021-10-15 20:03:29,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 54 transitions, 130 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-15 20:03:29,496 INFO L242 Difference]: Finished difference. Result has 44 places, 53 transitions, 132 flow [2021-10-15 20:03:29,497 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=44, PETRI_TRANSITIONS=53} [2021-10-15 20:03:29,497 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, -39 predicate places. [2021-10-15 20:03:29,498 INFO L470 AbstractCegarLoop]: Abstraction has has 44 places, 53 transitions, 132 flow [2021-10-15 20:03:29,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 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 20:03:29,498 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:03:29,499 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] [2021-10-15 20:03:29,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-15 20:03:29,500 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 20:03:29,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:03:29,500 INFO L82 PathProgramCache]: Analyzing trace with hash -2015665368, now seen corresponding path program 1 times [2021-10-15 20:03:29,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:03:29,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247741560] [2021-10-15 20:03:29,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:03:29,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:03:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:03:29,596 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 20:03:29,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:03:29,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247741560] [2021-10-15 20:03:29,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247741560] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:03:29,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:03:29,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 20:03:29,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825337192] [2021-10-15 20:03:29,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:03:29,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:03:29,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:03:29,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:03:29,606 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 129 [2021-10-15 20:03:29,608 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 53 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 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 20:03:29,611 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:03:29,612 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 129 [2021-10-15 20:03:29,612 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:03:29,664 INFO L129 PetriNetUnfolder]: 38/145 cut-off events. [2021-10-15 20:03:29,664 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-10-15 20:03:29,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 145 events. 38/145 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 281 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 179. Up to 12 conditions per place. [2021-10-15 20:03:29,666 INFO L132 encePairwiseOnDemand]: 123/129 looper letters, 7 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2021-10-15 20:03:29,667 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 158 flow [2021-10-15 20:03:29,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:03:29,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:03:29,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 334 transitions. [2021-10-15 20:03:29,669 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8630490956072352 [2021-10-15 20:03:29,669 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 334 transitions. [2021-10-15 20:03:29,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 334 transitions. [2021-10-15 20:03:29,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:03:29,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 334 transitions. [2021-10-15 20:03:29,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 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 20:03:29,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 20:03:29,674 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 20:03:29,674 INFO L186 Difference]: Start difference. First operand has 44 places, 53 transitions, 132 flow. Second operand 3 states and 334 transitions. [2021-10-15 20:03:29,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 158 flow [2021-10-15 20:03:29,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 150 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:03:29,678 INFO L242 Difference]: Finished difference. Result has 45 places, 55 transitions, 147 flow [2021-10-15 20:03:29,678 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=45, PETRI_TRANSITIONS=55} [2021-10-15 20:03:29,679 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, -38 predicate places. [2021-10-15 20:03:29,679 INFO L470 AbstractCegarLoop]: Abstraction has has 45 places, 55 transitions, 147 flow [2021-10-15 20:03:29,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 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 20:03:29,680 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:03:29,680 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] [2021-10-15 20:03:29,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-15 20:03:29,681 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 20:03:29,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:03:29,681 INFO L82 PathProgramCache]: Analyzing trace with hash 2021136490, now seen corresponding path program 1 times [2021-10-15 20:03:29,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:03:29,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97105553] [2021-10-15 20:03:29,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:03:29,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:03:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:03:29,827 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 20:03:29,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:03:29,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97105553] [2021-10-15 20:03:29,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97105553] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:03:29,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:03:29,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 20:03:29,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863396073] [2021-10-15 20:03:29,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 20:03:29,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:03:29,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 20:03:29,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 20:03:29,832 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 129 [2021-10-15 20:03:29,834 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 55 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 100.33333333333333) internal successors, (602), 6 states have internal predecessors, (602), 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 20:03:29,834 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:03:29,834 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 129 [2021-10-15 20:03:29,834 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:03:30,004 INFO L129 PetriNetUnfolder]: 80/301 cut-off events. [2021-10-15 20:03:30,005 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-10-15 20:03:30,005 INFO L84 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 301 events. 80/301 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1152 event pairs, 2 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 382. Up to 27 conditions per place. [2021-10-15 20:03:30,007 INFO L132 encePairwiseOnDemand]: 122/129 looper letters, 8 selfloop transitions, 9 changer transitions 0/61 dead transitions. [2021-10-15 20:03:30,007 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 61 transitions, 201 flow [2021-10-15 20:03:30,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 20:03:30,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 20:03:30,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 708 transitions. [2021-10-15 20:03:30,026 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7840531561461794 [2021-10-15 20:03:30,026 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 708 transitions. [2021-10-15 20:03:30,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 708 transitions. [2021-10-15 20:03:30,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:03:30,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 708 transitions. [2021-10-15 20:03:30,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 101.14285714285714) internal successors, (708), 7 states have internal predecessors, (708), 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 20:03:30,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 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 20:03:30,034 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 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 20:03:30,034 INFO L186 Difference]: Start difference. First operand has 45 places, 55 transitions, 147 flow. Second operand 7 states and 708 transitions. [2021-10-15 20:03:30,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 61 transitions, 201 flow [2021-10-15 20:03:30,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 61 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:03:30,061 INFO L242 Difference]: Finished difference. Result has 53 places, 61 transitions, 204 flow [2021-10-15 20:03:30,061 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=204, PETRI_PLACES=53, PETRI_TRANSITIONS=61} [2021-10-15 20:03:30,062 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, -30 predicate places. [2021-10-15 20:03:30,062 INFO L470 AbstractCegarLoop]: Abstraction has has 53 places, 61 transitions, 204 flow [2021-10-15 20:03:30,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 100.33333333333333) internal successors, (602), 6 states have internal predecessors, (602), 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 20:03:30,063 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:03:30,063 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] [2021-10-15 20:03:30,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-15 20:03:30,064 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 20:03:30,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:03:30,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1880803796, now seen corresponding path program 1 times [2021-10-15 20:03:30,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:03:30,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410923361] [2021-10-15 20:03:30,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:03:30,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:03:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:03:30,160 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 20:03:30,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:03:30,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410923361] [2021-10-15 20:03:30,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410923361] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:03:30,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:03:30,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:03:30,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970629605] [2021-10-15 20:03:30,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:03:30,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:03:30,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:03:30,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:03:30,171 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 129 [2021-10-15 20:03:30,173 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 61 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 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 20:03:30,173 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:03:30,173 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 129 [2021-10-15 20:03:30,173 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:03:30,433 INFO L129 PetriNetUnfolder]: 306/1111 cut-off events. [2021-10-15 20:03:30,434 INFO L130 PetriNetUnfolder]: For 104/104 co-relation queries the response was YES. [2021-10-15 20:03:30,437 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1691 conditions, 1111 events. 306/1111 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 7300 event pairs, 6 based on Foata normal form. 0/868 useless extension candidates. Maximal degree in co-relation 1682. Up to 150 conditions per place. [2021-10-15 20:03:30,444 INFO L132 encePairwiseOnDemand]: 121/129 looper letters, 14 selfloop transitions, 15 changer transitions 0/81 dead transitions. [2021-10-15 20:03:30,444 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 302 flow [2021-10-15 20:03:30,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 20:03:30,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-15 20:03:30,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 840 transitions. [2021-10-15 20:03:30,449 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.813953488372093 [2021-10-15 20:03:30,449 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 840 transitions. [2021-10-15 20:03:30,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 840 transitions. [2021-10-15 20:03:30,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:03:30,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 840 transitions. [2021-10-15 20:03:30,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 105.0) internal successors, (840), 8 states have internal predecessors, (840), 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 20:03:30,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 129.0) internal successors, (1161), 9 states have internal predecessors, (1161), 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 20:03:30,459 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 129.0) internal successors, (1161), 9 states have internal predecessors, (1161), 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 20:03:30,460 INFO L186 Difference]: Start difference. First operand has 53 places, 61 transitions, 204 flow. Second operand 8 states and 840 transitions. [2021-10-15 20:03:30,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 302 flow [2021-10-15 20:03:30,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 81 transitions, 299 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:03:30,467 INFO L242 Difference]: Finished difference. Result has 64 places, 75 transitions, 305 flow [2021-10-15 20:03:30,467 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=305, PETRI_PLACES=64, PETRI_TRANSITIONS=75} [2021-10-15 20:03:30,468 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, -19 predicate places. [2021-10-15 20:03:30,468 INFO L470 AbstractCegarLoop]: Abstraction has has 64 places, 75 transitions, 305 flow [2021-10-15 20:03:30,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 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 20:03:30,469 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:03:30,469 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 20:03:30,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-15 20:03:30,470 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 20:03:30,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:03:30,471 INFO L82 PathProgramCache]: Analyzing trace with hash 634718134, now seen corresponding path program 1 times [2021-10-15 20:03:30,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:03:30,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300870515] [2021-10-15 20:03:30,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:03:30,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:03:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:03:30,539 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 20:03:30,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:03:30,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300870515] [2021-10-15 20:03:30,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300870515] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:03:30,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:03:30,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:03:30,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479928635] [2021-10-15 20:03:30,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:03:30,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:03:30,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:03:30,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:03:30,544 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 129 [2021-10-15 20:03:30,546 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 75 transitions, 305 flow. Second operand has 5 states, 5 states have (on average 92.4) internal successors, (462), 5 states have internal predecessors, (462), 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 20:03:30,546 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:03:30,546 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 129 [2021-10-15 20:03:30,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:03:30,912 INFO L129 PetriNetUnfolder]: 546/2033 cut-off events. [2021-10-15 20:03:30,913 INFO L130 PetriNetUnfolder]: For 941/941 co-relation queries the response was YES. [2021-10-15 20:03:30,923 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3783 conditions, 2033 events. 546/2033 cut-off events. For 941/941 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 13716 event pairs, 10 based on Foata normal form. 0/1678 useless extension candidates. Maximal degree in co-relation 3769. Up to 252 conditions per place. [2021-10-15 20:03:30,937 INFO L132 encePairwiseOnDemand]: 120/129 looper letters, 47 selfloop transitions, 32 changer transitions 0/131 dead transitions. [2021-10-15 20:03:30,937 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 131 transitions, 755 flow [2021-10-15 20:03:30,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-15 20:03:30,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-15 20:03:30,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 861 transitions. [2021-10-15 20:03:30,942 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7416020671834626 [2021-10-15 20:03:30,943 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 861 transitions. [2021-10-15 20:03:30,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 861 transitions. [2021-10-15 20:03:30,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:03:30,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 861 transitions. [2021-10-15 20:03:30,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 95.66666666666667) internal successors, (861), 9 states have internal predecessors, (861), 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 20:03:30,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 129.0) internal successors, (1290), 10 states have internal predecessors, (1290), 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 20:03:30,952 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 129.0) internal successors, (1290), 10 states have internal predecessors, (1290), 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 20:03:30,953 INFO L186 Difference]: Start difference. First operand has 64 places, 75 transitions, 305 flow. Second operand 9 states and 861 transitions. [2021-10-15 20:03:30,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 131 transitions, 755 flow [2021-10-15 20:03:30,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 131 transitions, 755 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:03:30,969 INFO L242 Difference]: Finished difference. Result has 77 places, 103 transitions, 565 flow [2021-10-15 20:03:30,969 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=565, PETRI_PLACES=77, PETRI_TRANSITIONS=103} [2021-10-15 20:03:30,970 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, -6 predicate places. [2021-10-15 20:03:30,970 INFO L470 AbstractCegarLoop]: Abstraction has has 77 places, 103 transitions, 565 flow [2021-10-15 20:03:30,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.4) internal successors, (462), 5 states have internal predecessors, (462), 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 20:03:30,971 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:03:30,971 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, 1] [2021-10-15 20:03:30,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-15 20:03:30,972 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 20:03:30,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:03:30,972 INFO L82 PathProgramCache]: Analyzing trace with hash 719357973, now seen corresponding path program 1 times [2021-10-15 20:03:30,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:03:30,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589454361] [2021-10-15 20:03:30,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:03:30,973 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:03:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:03:31,054 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 20:03:31,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:03:31,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589454361] [2021-10-15 20:03:31,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589454361] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:03:31,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:03:31,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 20:03:31,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573421518] [2021-10-15 20:03:31,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:03:31,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:03:31,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:03:31,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:03:31,059 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 129 [2021-10-15 20:03:31,060 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 103 transitions, 565 flow. Second operand has 5 states, 5 states have (on average 99.2) internal successors, (496), 5 states have internal predecessors, (496), 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 20:03:31,061 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:03:31,061 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 129 [2021-10-15 20:03:31,061 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:03:31,294 INFO L129 PetriNetUnfolder]: 329/1412 cut-off events. [2021-10-15 20:03:31,295 INFO L130 PetriNetUnfolder]: For 597/597 co-relation queries the response was YES. [2021-10-15 20:03:31,301 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2766 conditions, 1412 events. 329/1412 cut-off events. For 597/597 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 8831 event pairs, 3 based on Foata normal form. 40/1226 useless extension candidates. Maximal degree in co-relation 2747. Up to 192 conditions per place. [2021-10-15 20:03:31,310 INFO L132 encePairwiseOnDemand]: 122/129 looper letters, 13 selfloop transitions, 9 changer transitions 0/101 dead transitions. [2021-10-15 20:03:31,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 101 transitions, 550 flow [2021-10-15 20:03:31,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 20:03:31,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 20:03:31,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 603 transitions. [2021-10-15 20:03:31,313 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7790697674418605 [2021-10-15 20:03:31,314 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 603 transitions. [2021-10-15 20:03:31,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 603 transitions. [2021-10-15 20:03:31,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:03:31,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 603 transitions. [2021-10-15 20:03:31,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.5) internal successors, (603), 6 states have internal predecessors, (603), 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 20:03:31,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 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 20:03:31,321 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 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 20:03:31,322 INFO L186 Difference]: Start difference. First operand has 77 places, 103 transitions, 565 flow. Second operand 6 states and 603 transitions. [2021-10-15 20:03:31,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 101 transitions, 550 flow [2021-10-15 20:03:31,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 101 transitions, 542 flow, removed 4 selfloop flow, removed 0 redundant places. [2021-10-15 20:03:31,335 INFO L242 Difference]: Finished difference. Result has 86 places, 101 transitions, 548 flow [2021-10-15 20:03:31,335 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=548, PETRI_PLACES=86, PETRI_TRANSITIONS=101} [2021-10-15 20:03:31,336 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 3 predicate places. [2021-10-15 20:03:31,336 INFO L470 AbstractCegarLoop]: Abstraction has has 86 places, 101 transitions, 548 flow [2021-10-15 20:03:31,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.2) internal successors, (496), 5 states have internal predecessors, (496), 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 20:03:31,337 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:03:31,337 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, 1, 1] [2021-10-15 20:03:31,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-15 20:03:31,338 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 20:03:31,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:03:31,339 INFO L82 PathProgramCache]: Analyzing trace with hash 9984219, now seen corresponding path program 1 times [2021-10-15 20:03:31,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:03:31,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216353097] [2021-10-15 20:03:31,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:03:31,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:03:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:03:31,460 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 20:03:31,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:03:31,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216353097] [2021-10-15 20:03:31,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216353097] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:03:31,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:03:31,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 20:03:31,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718611737] [2021-10-15 20:03:31,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 20:03:31,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:03:31,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 20:03:31,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 20:03:31,467 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 129 [2021-10-15 20:03:31,469 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 101 transitions, 548 flow. Second operand has 6 states, 6 states have (on average 99.33333333333333) internal successors, (596), 6 states have internal predecessors, (596), 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 20:03:31,469 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:03:31,469 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 129 [2021-10-15 20:03:31,469 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:03:32,012 INFO L129 PetriNetUnfolder]: 447/2032 cut-off events. [2021-10-15 20:03:32,013 INFO L130 PetriNetUnfolder]: For 1542/1542 co-relation queries the response was YES. [2021-10-15 20:03:32,026 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4403 conditions, 2032 events. 447/2032 cut-off events. For 1542/1542 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14517 event pairs, 3 based on Foata normal form. 32/1733 useless extension candidates. Maximal degree in co-relation 4380. Up to 282 conditions per place. [2021-10-15 20:03:32,038 INFO L132 encePairwiseOnDemand]: 122/129 looper letters, 33 selfloop transitions, 27 changer transitions 0/122 dead transitions. [2021-10-15 20:03:32,038 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 122 transitions, 807 flow [2021-10-15 20:03:32,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-15 20:03:32,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-15 20:03:32,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1015 transitions. [2021-10-15 20:03:32,044 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7868217054263565 [2021-10-15 20:03:32,045 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1015 transitions. [2021-10-15 20:03:32,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1015 transitions. [2021-10-15 20:03:32,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:03:32,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1015 transitions. [2021-10-15 20:03:32,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 101.5) internal successors, (1015), 10 states have internal predecessors, (1015), 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 20:03:32,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 129.0) internal successors, (1419), 11 states have internal predecessors, (1419), 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 20:03:32,058 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 129.0) internal successors, (1419), 11 states have internal predecessors, (1419), 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 20:03:32,058 INFO L186 Difference]: Start difference. First operand has 86 places, 101 transitions, 548 flow. Second operand 10 states and 1015 transitions. [2021-10-15 20:03:32,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 122 transitions, 807 flow [2021-10-15 20:03:32,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 122 transitions, 801 flow, removed 3 selfloop flow, removed 0 redundant places. [2021-10-15 20:03:32,080 INFO L242 Difference]: Finished difference. Result has 99 places, 115 transitions, 739 flow [2021-10-15 20:03:32,081 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=739, PETRI_PLACES=99, PETRI_TRANSITIONS=115} [2021-10-15 20:03:32,081 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 16 predicate places. [2021-10-15 20:03:32,081 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 115 transitions, 739 flow [2021-10-15 20:03:32,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 99.33333333333333) internal successors, (596), 6 states have internal predecessors, (596), 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 20:03:32,082 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:03:32,083 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:03:32,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-15 20:03:32,083 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:03:32,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:03:32,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1819905859, now seen corresponding path program 1 times [2021-10-15 20:03:32,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:03:32,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904332668] [2021-10-15 20:03:32,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:03:32,088 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:03:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:03:32,168 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:03:32,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:03:32,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904332668] [2021-10-15 20:03:32,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904332668] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:03:32,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:03:32,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:03:32,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761309254] [2021-10-15 20:03:32,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:03:32,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:03:32,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:03:32,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:03:32,175 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 129 [2021-10-15 20:03:32,176 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 115 transitions, 739 flow. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 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 20:03:32,177 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:03:32,177 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 129 [2021-10-15 20:03:32,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:03:32,651 INFO L129 PetriNetUnfolder]: 437/2040 cut-off events. [2021-10-15 20:03:32,651 INFO L130 PetriNetUnfolder]: For 1461/1461 co-relation queries the response was YES. [2021-10-15 20:03:32,666 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4368 conditions, 2040 events. 437/2040 cut-off events. For 1461/1461 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 14538 event pairs, 5 based on Foata normal form. 22/1739 useless extension candidates. Maximal degree in co-relation 4340. Up to 312 conditions per place. [2021-10-15 20:03:32,677 INFO L132 encePairwiseOnDemand]: 123/129 looper letters, 8 selfloop transitions, 3 changer transitions 0/118 dead transitions. [2021-10-15 20:03:32,677 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 118 transitions, 771 flow [2021-10-15 20:03:32,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:03:32,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:03:32,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 334 transitions. [2021-10-15 20:03:32,680 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8630490956072352 [2021-10-15 20:03:32,680 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 334 transitions. [2021-10-15 20:03:32,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 334 transitions. [2021-10-15 20:03:32,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:03:32,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 334 transitions. [2021-10-15 20:03:32,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 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 20:03:32,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 20:03:32,684 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 20:03:32,684 INFO L186 Difference]: Start difference. First operand has 99 places, 115 transitions, 739 flow. Second operand 3 states and 334 transitions. [2021-10-15 20:03:32,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 118 transitions, 771 flow [2021-10-15 20:03:32,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 118 transitions, 739 flow, removed 13 selfloop flow, removed 1 redundant places. [2021-10-15 20:03:32,707 INFO L242 Difference]: Finished difference. Result has 102 places, 118 transitions, 741 flow [2021-10-15 20:03:32,707 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=741, PETRI_PLACES=102, PETRI_TRANSITIONS=118} [2021-10-15 20:03:32,707 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 19 predicate places. [2021-10-15 20:03:32,708 INFO L470 AbstractCegarLoop]: Abstraction has has 102 places, 118 transitions, 741 flow [2021-10-15 20:03:32,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 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 20:03:32,708 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:03:32,708 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:03:32,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-15 20:03:32,709 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:03:32,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:03:32,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1795003067, now seen corresponding path program 1 times [2021-10-15 20:03:32,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:03:32,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503770618] [2021-10-15 20:03:32,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:03:32,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:03:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:03:32,789 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:03:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:03:32,925 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:03:32,925 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 20:03:32,927 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:03:32,929 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:03:32,935 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:03:32,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-15 20:03:32,943 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:03:33,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:03:33 BoogieIcfgContainer [2021-10-15 20:03:33,066 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:03:33,066 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:03:33,066 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:03:33,067 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:03:33,067 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:03:27" (3/4) ... [2021-10-15 20:03:33,070 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-15 20:03:33,209 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2816c015-6172-435d-8028-31cd55e2fc9e/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 20:03:33,209 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:03:33,211 INFO L168 Benchmark]: Toolchain (without parser) took 7603.48 ms. Allocated memory was 102.8 MB in the beginning and 151.0 MB in the end (delta: 48.2 MB). Free memory was 70.2 MB in the beginning and 86.3 MB in the end (delta: -16.1 MB). Peak memory consumption was 31.7 MB. Max. memory is 16.1 GB. [2021-10-15 20:03:33,212 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 77.6 MB. Free memory is still 35.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:03:33,213 INFO L168 Benchmark]: CACSL2BoogieTranslator took 621.82 ms. Allocated memory is still 102.8 MB. Free memory was 69.9 MB in the beginning and 69.9 MB in the end (delta: 86.6 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 20:03:33,213 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.72 ms. Allocated memory is still 102.8 MB. Free memory was 69.9 MB in the beginning and 66.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:03:33,214 INFO L168 Benchmark]: Boogie Preprocessor took 74.84 ms. Allocated memory is still 102.8 MB. Free memory was 66.6 MB in the beginning and 64.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:03:33,214 INFO L168 Benchmark]: RCFGBuilder took 1303.30 ms. Allocated memory was 102.8 MB in the beginning and 125.8 MB in the end (delta: 23.1 MB). Free memory was 64.5 MB in the beginning and 81.1 MB in the end (delta: -16.6 MB). Peak memory consumption was 30.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:03:33,214 INFO L168 Benchmark]: TraceAbstraction took 5343.53 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 81.1 MB in the beginning and 106.3 MB in the end (delta: -25.2 MB). Peak memory consumption was 70.3 MB. Max. memory is 16.1 GB. [2021-10-15 20:03:33,215 INFO L168 Benchmark]: Witness Printer took 142.72 ms. Allocated memory is still 151.0 MB. Free memory was 106.3 MB in the beginning and 86.3 MB in the end (delta: 19.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-15 20:03:33,217 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 77.6 MB. Free memory is still 35.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 621.82 ms. Allocated memory is still 102.8 MB. Free memory was 69.9 MB in the beginning and 69.9 MB in the end (delta: 86.6 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 102.72 ms. Allocated memory is still 102.8 MB. Free memory was 69.9 MB in the beginning and 66.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.84 ms. Allocated memory is still 102.8 MB. Free memory was 66.6 MB in the beginning and 64.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1303.30 ms. Allocated memory was 102.8 MB in the beginning and 125.8 MB in the end (delta: 23.1 MB). Free memory was 64.5 MB in the beginning and 81.1 MB in the end (delta: -16.6 MB). Peak memory consumption was 30.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5343.53 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 81.1 MB in the beginning and 106.3 MB in the end (delta: -25.2 MB). Peak memory consumption was 70.3 MB. Max. memory is 16.1 GB. * Witness Printer took 142.72 ms. Allocated memory is still 151.0 MB. Free memory was 106.3 MB in the beginning and 86.3 MB in the end (delta: 19.9 MB). Peak memory consumption was 18.9 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: 897]: 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; [L490] int waterLevel = 1; [L491] int methaneLevelCritical = 0; [L588] int pumpRunning = 0; [L589] int systemActive = 1; [L759] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L835] int retValue_acc ; [L836] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L884] int retValue_acc ; [L887] retValue_acc = 1 [L888] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L842] tmp = valid_product() [L844] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L421] int splverifierCounter ; [L422] int tmp ; [L423] int tmp___0 ; [L424] int tmp___1 ; [L425] int tmp___2 ; [L428] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L430] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L432] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L438] tmp = __VERIFIER_nondet_int() [L440] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L508] COND TRUE waterLevel < 2 [L509] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L448] tmp___0 = __VERIFIER_nondet_int() [L450] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L458] tmp___2 = __VERIFIER_nondet_int() [L460] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L596] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L603] COND TRUE \read(systemActive) [L625] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L628] COND TRUE ! pumpRunning [L740] int retValue_acc ; [L741] int tmp ; [L742] int tmp___0 ; [L570] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L573] COND FALSE !(waterLevel < 2) [L577] retValue_acc = 0 [L578] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L746] tmp = isHighWaterSensorDry() [L748] COND FALSE !(\read(tmp)) [L751] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L753] retValue_acc = tmp___0 [L754] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L630] tmp = isHighWaterLevel() [L632] COND TRUE \read(tmp) [L659] int tmp ; [L684] int retValue_acc ; [L529] int retValue_acc ; [L532] retValue_acc = methaneLevelCritical [L533] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L688] retValue_acc = isMethaneLevelCritical() [L690] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L663] tmp = isMethaneAlarm() [L665] COND FALSE !(\read(tmp)) [L653] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L903] int tmp ; [L904] int tmp___0 ; [L529] int retValue_acc ; [L532] retValue_acc = methaneLevelCritical [L533] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L908] tmp = isMethaneLevelCritical() [L910] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L430] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L432] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L438] tmp = __VERIFIER_nondet_int() [L440] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L448] tmp___0 = __VERIFIER_nondet_int() [L450] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L520] COND FALSE !(\read(methaneLevelCritical)) [L523] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L458] tmp___2 = __VERIFIER_nondet_int() [L460] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L596] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L496] COND TRUE waterLevel > 0 [L497] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L603] COND TRUE \read(systemActive) [L625] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L628] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L903] int tmp ; [L904] int tmp___0 ; [L529] int retValue_acc ; [L532] retValue_acc = methaneLevelCritical [L533] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L908] tmp = isMethaneLevelCritical() [L910] COND TRUE \read(tmp) [L695] int retValue_acc ; [L698] retValue_acc = pumpRunning [L699] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L912] tmp___0 = isPumpRunning() [L914] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L897] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - UnprovableResult [Line: 897]: 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: 897]: 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, 87 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 10.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5145.3ms, OverallIterations: 12, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 3158.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 72.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 58 SDtfs, 109 SDslu, 88 SDs, 0 SdLazy, 188 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 709.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 349.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=741occurred in iteration=11, InterpolantAutomatonStates: 59, 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: 81.9ms SsaConstructionTime, 544.6ms SatisfiabilityAnalysisTime, 845.4ms InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 300 ConstructedInterpolants, 0 QuantifiedInterpolants, 605 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 14/14 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 20:03:33,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2816c015-6172-435d-8028-31cd55e2fc9e/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...