./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product61.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_b64bd626-41a9-49c9-9c07-e822b26a3b6e/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64bd626-41a9-49c9-9c07-e822b26a3b6e/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_b64bd626-41a9-49c9-9c07-e822b26a3b6e/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64bd626-41a9-49c9-9c07-e822b26a3b6e/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product61.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64bd626-41a9-49c9-9c07-e822b26a3b6e/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_b64bd626-41a9-49c9-9c07-e822b26a3b6e/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 51b6074f8e7e230446cc50b7c34a5618ed559216 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:25:32,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:25:32,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:25:32,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:25:32,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:25:32,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:25:32,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:25:32,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:25:32,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:25:32,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:25:32,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:25:32,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:25:32,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:25:32,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:25:32,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:25:32,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:25:32,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:25:32,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:25:32,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:25:32,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:25:32,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:25:32,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:25:32,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:25:32,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:25:32,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:25:32,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:25:32,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:25:32,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:25:32,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:25:32,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:25:32,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:25:32,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:25:32,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:25:32,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:25:32,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:25:32,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:25:32,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:25:32,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:25:32,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:25:32,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:25:32,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:25:32,537 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64bd626-41a9-49c9-9c07-e822b26a3b6e/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:25:32,562 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:25:32,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:25:32,562 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:25:32,562 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:25:32,563 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:25:32,564 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:25:32,564 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:25:32,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:25:32,564 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:25:32,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:25:32,565 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:25:32,565 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:25:32,565 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:25:32,565 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:25:32,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:25:32,565 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:25:32,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:25:32,566 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:25:32,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:25:32,566 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:25:32,566 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:25:32,567 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:25:32,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:25:32,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:25:32,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:25:32,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:25:32,568 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:25:32,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:25:32,568 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:25:32,568 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:25:32,568 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:25:32,568 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:25:32,569 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_b64bd626-41a9-49c9-9c07-e822b26a3b6e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64bd626-41a9-49c9-9c07-e822b26a3b6e/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51b6074f8e7e230446cc50b7c34a5618ed559216 [2021-10-15 19:25:32,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:25:32,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:25:32,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:25:32,847 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:25:32,848 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:25:32,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64bd626-41a9-49c9-9c07-e822b26a3b6e/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/product-lines/minepump_spec4_product61.cil.c [2021-10-15 19:25:32,930 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64bd626-41a9-49c9-9c07-e822b26a3b6e/bin/uautomizer-hJ6jxDFKc3/data/ec07d3628/e4411e708591452cac4b075ad70a0351/FLAG81bd3baa6 [2021-10-15 19:25:33,399 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:25:33,400 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64bd626-41a9-49c9-9c07-e822b26a3b6e/sv-benchmarks/c/product-lines/minepump_spec4_product61.cil.c [2021-10-15 19:25:33,420 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64bd626-41a9-49c9-9c07-e822b26a3b6e/bin/uautomizer-hJ6jxDFKc3/data/ec07d3628/e4411e708591452cac4b075ad70a0351/FLAG81bd3baa6 [2021-10-15 19:25:33,733 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64bd626-41a9-49c9-9c07-e822b26a3b6e/bin/uautomizer-hJ6jxDFKc3/data/ec07d3628/e4411e708591452cac4b075ad70a0351 [2021-10-15 19:25:33,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:25:33,737 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:25:33,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:25:33,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:25:33,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:25:33,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:25:33" (1/1) ... [2021-10-15 19:25:33,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43598012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:25:33, skipping insertion in model container [2021-10-15 19:25:33,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:25:33" (1/1) ... [2021-10-15 19:25:33,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:25:33,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:25:33,998 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_b64bd626-41a9-49c9-9c07-e822b26a3b6e/sv-benchmarks/c/product-lines/minepump_spec4_product61.cil.c[1605,1618] [2021-10-15 19:25:34,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:25:34,171 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:25:34,199 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_b64bd626-41a9-49c9-9c07-e822b26a3b6e/sv-benchmarks/c/product-lines/minepump_spec4_product61.cil.c[1605,1618] [2021-10-15 19:25:34,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:25:34,316 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:25:34,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:25:34 WrapperNode [2021-10-15 19:25:34,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:25:34,319 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:25:34,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:25:34,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:25:34,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:25:34" (1/1) ... [2021-10-15 19:25:34,357 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:25:34" (1/1) ... [2021-10-15 19:25:34,434 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:25:34,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:25:34,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:25:34,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:25:34,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:25:34" (1/1) ... [2021-10-15 19:25:34,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:25:34" (1/1) ... [2021-10-15 19:25:34,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:25:34" (1/1) ... [2021-10-15 19:25:34,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:25:34" (1/1) ... [2021-10-15 19:25:34,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:25:34" (1/1) ... [2021-10-15 19:25:34,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:25:34" (1/1) ... [2021-10-15 19:25:34,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:25:34" (1/1) ... [2021-10-15 19:25:34,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:25:34,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:25:34,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:25:34,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:25:34,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:25:34" (1/1) ... [2021-10-15 19:25:34,517 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:25:34,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64bd626-41a9-49c9-9c07-e822b26a3b6e/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:25:34,539 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64bd626-41a9-49c9-9c07-e822b26a3b6e/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:25:34,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64bd626-41a9-49c9-9c07-e822b26a3b6e/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:25:34,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:25:34,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:25:34,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:25:34,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:25:35,698 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:25:35,699 INFO L299 CfgBuilder]: Removed 348 assume(true) statements. [2021-10-15 19:25:35,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:25:35 BoogieIcfgContainer [2021-10-15 19:25:35,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:25:35,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:25:35,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:25:35,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:25:35,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:25:33" (1/3) ... [2021-10-15 19:25:35,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a1ea026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:25:35, skipping insertion in model container [2021-10-15 19:25:35,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:25:34" (2/3) ... [2021-10-15 19:25:35,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a1ea026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:25:35, skipping insertion in model container [2021-10-15 19:25:35,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:25:35" (3/3) ... [2021-10-15 19:25:35,710 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product61.cil.c [2021-10-15 19:25:35,715 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:25:35,716 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-15 19:25:35,762 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:25:35,768 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-15 19:25:35,768 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-15 19:25:35,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 225 places, 336 transitions, 672 flow [2021-10-15 19:25:35,856 INFO L129 PetriNetUnfolder]: 112/336 cut-off events. [2021-10-15 19:25:35,857 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:25:35,859 INFO L84 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 336 events. 112/336 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1217 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 0. Up to 20 conditions per place. [2021-10-15 19:25:35,859 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 336 transitions, 672 flow [2021-10-15 19:25:35,874 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 221 places, 329 transitions, 658 flow [2021-10-15 19:25:35,890 INFO L129 PetriNetUnfolder]: 23/76 cut-off events. [2021-10-15 19:25:35,890 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:25:35,890 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:25:35,891 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:25:35,891 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:25:35,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:25:35,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1742258062, now seen corresponding path program 1 times [2021-10-15 19:25:35,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:25:35,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125134978] [2021-10-15 19:25:35,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:25:35,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:25:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:25:36,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:25:36,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:25:36,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125134978] [2021-10-15 19:25:36,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125134978] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:25:36,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:25:36,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:25:36,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977034672] [2021-10-15 19:25:36,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:25:36,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:25:36,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:25:36,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:25:36,240 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 336 [2021-10-15 19:25:36,246 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 329 transitions, 658 flow. Second operand has 2 states, 2 states have (on average 329.5) internal successors, (659), 2 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:36,246 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:25:36,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 336 [2021-10-15 19:25:36,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:25:36,284 INFO L129 PetriNetUnfolder]: 104/324 cut-off events. [2021-10-15 19:25:36,284 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:25:36,286 INFO L84 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 324 events. 104/324 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1181 event pairs, 0 based on Foata normal form. 4/222 useless extension candidates. Maximal degree in co-relation 324. Up to 20 conditions per place. [2021-10-15 19:25:36,289 INFO L132 encePairwiseOnDemand]: 331/336 looper letters, 0 selfloop transitions, 0 changer transitions 0/324 dead transitions. [2021-10-15 19:25:36,290 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 324 transitions, 648 flow [2021-10-15 19:25:36,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:25:36,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 19:25:36,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 663 transitions. [2021-10-15 19:25:36,306 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9866071428571429 [2021-10-15 19:25:36,307 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 663 transitions. [2021-10-15 19:25:36,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 663 transitions. [2021-10-15 19:25:36,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:25:36,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 663 transitions. [2021-10-15 19:25:36,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 331.5) internal successors, (663), 2 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:36,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 336.0) internal successors, (1008), 3 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:36,332 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 336.0) internal successors, (1008), 3 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:36,333 INFO L186 Difference]: Start difference. First operand has 221 places, 329 transitions, 658 flow. Second operand 2 states and 663 transitions. [2021-10-15 19:25:36,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 324 transitions, 648 flow [2021-10-15 19:25:36,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 324 transitions, 648 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:25:36,347 INFO L242 Difference]: Finished difference. Result has 222 places, 324 transitions, 648 flow [2021-10-15 19:25:36,350 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=648, PETRI_PLACES=222, PETRI_TRANSITIONS=324} [2021-10-15 19:25:36,351 INFO L334 CegarLoopForPetriNet]: 221 programPoint places, 1 predicate places. [2021-10-15 19:25:36,351 INFO L470 AbstractCegarLoop]: Abstraction has has 222 places, 324 transitions, 648 flow [2021-10-15 19:25:36,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 329.5) internal successors, (659), 2 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:36,352 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:25:36,352 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:25:36,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:25:36,353 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:25:36,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:25:36,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1505952337, now seen corresponding path program 1 times [2021-10-15 19:25:36,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:25:36,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660992759] [2021-10-15 19:25:36,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:25:36,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:25:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:25:36,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:25:36,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:25:36,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660992759] [2021-10-15 19:25:36,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660992759] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:25:36,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:25:36,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:25:36,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861576169] [2021-10-15 19:25:36,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:25:36,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:25:36,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:25:36,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:25:36,510 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 336 [2021-10-15 19:25:36,512 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 324 transitions, 648 flow. Second operand has 3 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:36,513 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:25:36,513 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 336 [2021-10-15 19:25:36,513 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:25:36,543 INFO L129 PetriNetUnfolder]: 39/121 cut-off events. [2021-10-15 19:25:36,544 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:25:36,544 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 121 events. 39/121 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 204 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 123. Up to 20 conditions per place. [2021-10-15 19:25:36,551 INFO L132 encePairwiseOnDemand]: 334/336 looper letters, 1 selfloop transitions, 1 changer transitions 0/121 dead transitions. [2021-10-15 19:25:36,551 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 121 transitions, 246 flow [2021-10-15 19:25:36,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:25:36,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:25:36,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 981 transitions. [2021-10-15 19:25:36,558 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9732142857142857 [2021-10-15 19:25:36,558 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 981 transitions. [2021-10-15 19:25:36,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 981 transitions. [2021-10-15 19:25:36,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:25:36,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 981 transitions. [2021-10-15 19:25:36,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:36,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:36,573 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:36,574 INFO L186 Difference]: Start difference. First operand has 222 places, 324 transitions, 648 flow. Second operand 3 states and 981 transitions. [2021-10-15 19:25:36,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 121 transitions, 246 flow [2021-10-15 19:25:36,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 121 transitions, 246 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:25:36,583 INFO L242 Difference]: Finished difference. Result has 86 places, 121 transitions, 244 flow [2021-10-15 19:25:36,584 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=86, PETRI_TRANSITIONS=121} [2021-10-15 19:25:36,590 INFO L334 CegarLoopForPetriNet]: 221 programPoint places, -135 predicate places. [2021-10-15 19:25:36,590 INFO L470 AbstractCegarLoop]: Abstraction has has 86 places, 121 transitions, 244 flow [2021-10-15 19:25:36,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:36,591 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:25:36,591 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:25:36,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 19:25:36,592 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:25:36,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:25:36,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1849279646, now seen corresponding path program 1 times [2021-10-15 19:25:36,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:25:36,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670036060] [2021-10-15 19:25:36,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:25:36,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:25:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:25:36,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:25:36,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:25:36,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670036060] [2021-10-15 19:25:36,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670036060] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:25:36,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:25:36,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:25:36,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574731636] [2021-10-15 19:25:36,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:25:36,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:25:36,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:25:36,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:25:36,779 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 336 [2021-10-15 19:25:36,783 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 121 transitions, 244 flow. Second operand has 6 states, 6 states have (on average 318.0) internal successors, (1908), 6 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:36,783 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:25:36,783 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 336 [2021-10-15 19:25:36,783 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:25:36,953 INFO L129 PetriNetUnfolder]: 38/120 cut-off events. [2021-10-15 19:25:36,953 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:25:36,954 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 120 events. 38/120 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 213 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 127. Up to 19 conditions per place. [2021-10-15 19:25:36,954 INFO L132 encePairwiseOnDemand]: 332/336 looper letters, 3 selfloop transitions, 3 changer transitions 0/120 dead transitions. [2021-10-15 19:25:36,955 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 120 transitions, 254 flow [2021-10-15 19:25:36,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:25:36,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:25:36,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1592 transitions. [2021-10-15 19:25:36,961 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9476190476190476 [2021-10-15 19:25:36,961 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1592 transitions. [2021-10-15 19:25:36,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1592 transitions. [2021-10-15 19:25:36,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:25:36,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1592 transitions. [2021-10-15 19:25:36,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 318.4) internal successors, (1592), 5 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:36,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 336.0) internal successors, (2016), 6 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:36,986 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 336.0) internal successors, (2016), 6 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:36,986 INFO L186 Difference]: Start difference. First operand has 86 places, 121 transitions, 244 flow. Second operand 5 states and 1592 transitions. [2021-10-15 19:25:36,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 120 transitions, 254 flow [2021-10-15 19:25:36,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 120 transitions, 253 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:25:36,992 INFO L242 Difference]: Finished difference. Result has 89 places, 120 transitions, 247 flow [2021-10-15 19:25:36,992 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=247, PETRI_PLACES=89, PETRI_TRANSITIONS=120} [2021-10-15 19:25:36,992 INFO L334 CegarLoopForPetriNet]: 221 programPoint places, -132 predicate places. [2021-10-15 19:25:36,993 INFO L470 AbstractCegarLoop]: Abstraction has has 89 places, 120 transitions, 247 flow [2021-10-15 19:25:36,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 318.0) internal successors, (1908), 6 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:36,995 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:25:36,995 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] [2021-10-15 19:25:36,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 19:25:36,996 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:25:36,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:25:36,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1583482167, now seen corresponding path program 1 times [2021-10-15 19:25:36,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:25:36,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341257225] [2021-10-15 19:25:36,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:25:36,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:25:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:25:37,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:25:37,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:25:37,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341257225] [2021-10-15 19:25:37,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341257225] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:25:37,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:25:37,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:25:37,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182065403] [2021-10-15 19:25:37,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:25:37,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:25:37,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:25:37,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:25:37,059 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 336 [2021-10-15 19:25:37,061 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 120 transitions, 247 flow. Second operand has 3 states, 3 states have (on average 258.0) internal successors, (774), 3 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 19:25:37,061 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:25:37,062 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 336 [2021-10-15 19:25:37,062 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:25:37,112 INFO L129 PetriNetUnfolder]: 35/123 cut-off events. [2021-10-15 19:25:37,112 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:25:37,112 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 123 events. 35/123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 85 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 148. Up to 13 conditions per place. [2021-10-15 19:25:37,113 INFO L132 encePairwiseOnDemand]: 321/336 looper letters, 11 selfloop transitions, 10 changer transitions 0/98 dead transitions. [2021-10-15 19:25:37,114 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 98 transitions, 245 flow [2021-10-15 19:25:37,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:25:37,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:25:37,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 794 transitions. [2021-10-15 19:25:37,118 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7876984126984127 [2021-10-15 19:25:37,118 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 794 transitions. [2021-10-15 19:25:37,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 794 transitions. [2021-10-15 19:25:37,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:25:37,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 794 transitions. [2021-10-15 19:25:37,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:37,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:37,127 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:37,127 INFO L186 Difference]: Start difference. First operand has 89 places, 120 transitions, 247 flow. Second operand 3 states and 794 transitions. [2021-10-15 19:25:37,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 98 transitions, 245 flow [2021-10-15 19:25:37,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 98 transitions, 240 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-15 19:25:37,132 INFO L242 Difference]: Finished difference. Result has 75 places, 97 transitions, 244 flow [2021-10-15 19:25:37,132 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=75, PETRI_TRANSITIONS=97} [2021-10-15 19:25:37,133 INFO L334 CegarLoopForPetriNet]: 221 programPoint places, -146 predicate places. [2021-10-15 19:25:37,133 INFO L470 AbstractCegarLoop]: Abstraction has has 75 places, 97 transitions, 244 flow [2021-10-15 19:25:37,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.0) internal successors, (774), 3 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 19:25:37,134 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:25:37,134 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:25:37,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-15 19:25:37,135 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:25:37,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:25:37,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1742343111, now seen corresponding path program 1 times [2021-10-15 19:25:37,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:25:37,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972670518] [2021-10-15 19:25:37,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:25:37,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:25:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:25:37,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:25:37,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:25:37,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972670518] [2021-10-15 19:25:37,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972670518] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:25:37,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:25:37,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:25:37,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336602640] [2021-10-15 19:25:37,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:25:37,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:25:37,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:25:37,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:25:37,204 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 336 [2021-10-15 19:25:37,205 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 97 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 288.0) internal successors, (864), 3 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:37,206 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:25:37,206 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 336 [2021-10-15 19:25:37,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:25:37,259 INFO L129 PetriNetUnfolder]: 51/191 cut-off events. [2021-10-15 19:25:37,259 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-10-15 19:25:37,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 191 events. 51/191 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 323 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 246. Up to 19 conditions per place. [2021-10-15 19:25:37,261 INFO L132 encePairwiseOnDemand]: 330/336 looper letters, 14 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2021-10-15 19:25:37,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 101 transitions, 286 flow [2021-10-15 19:25:37,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:25:37,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:25:37,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 881 transitions. [2021-10-15 19:25:37,265 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8740079365079365 [2021-10-15 19:25:37,266 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 881 transitions. [2021-10-15 19:25:37,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 881 transitions. [2021-10-15 19:25:37,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:25:37,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 881 transitions. [2021-10-15 19:25:37,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:37,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:37,274 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:37,275 INFO L186 Difference]: Start difference. First operand has 75 places, 97 transitions, 244 flow. Second operand 3 states and 881 transitions. [2021-10-15 19:25:37,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 101 transitions, 286 flow [2021-10-15 19:25:37,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 101 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:25:37,279 INFO L242 Difference]: Finished difference. Result has 76 places, 99 transitions, 247 flow [2021-10-15 19:25:37,280 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=247, PETRI_PLACES=76, PETRI_TRANSITIONS=99} [2021-10-15 19:25:37,280 INFO L334 CegarLoopForPetriNet]: 221 programPoint places, -145 predicate places. [2021-10-15 19:25:37,280 INFO L470 AbstractCegarLoop]: Abstraction has has 76 places, 99 transitions, 247 flow [2021-10-15 19:25:37,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 288.0) internal successors, (864), 3 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:37,281 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:25:37,281 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:25:37,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-15 19:25:37,282 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:25:37,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:25:37,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1484177673, now seen corresponding path program 1 times [2021-10-15 19:25:37,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:25:37,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392545088] [2021-10-15 19:25:37,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:25:37,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:25:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:25:37,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:25:37,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:25:37,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392545088] [2021-10-15 19:25:37,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392545088] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:25:37,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:25:37,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 19:25:37,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545571956] [2021-10-15 19:25:37,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:25:37,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:25:37,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:25:37,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:25:37,395 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 336 [2021-10-15 19:25:37,398 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 99 transitions, 247 flow. Second operand has 6 states, 6 states have (on average 253.33333333333334) internal successors, (1520), 6 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:37,398 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:25:37,398 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 336 [2021-10-15 19:25:37,399 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:25:37,506 INFO L129 PetriNetUnfolder]: 111/421 cut-off events. [2021-10-15 19:25:37,506 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-15 19:25:37,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 421 events. 111/421 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1505 event pairs, 2 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 537. Up to 39 conditions per place. [2021-10-15 19:25:37,509 INFO L132 encePairwiseOnDemand]: 319/336 looper letters, 17 selfloop transitions, 17 changer transitions 0/111 dead transitions. [2021-10-15 19:25:37,510 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 111 transitions, 343 flow [2021-10-15 19:25:37,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 19:25:37,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 19:25:37,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1801 transitions. [2021-10-15 19:25:37,533 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7657312925170068 [2021-10-15 19:25:37,533 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1801 transitions. [2021-10-15 19:25:37,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1801 transitions. [2021-10-15 19:25:37,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:25:37,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1801 transitions. [2021-10-15 19:25:37,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 257.2857142857143) internal successors, (1801), 7 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:37,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 336.0) internal successors, (2688), 8 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:37,548 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 336.0) internal successors, (2688), 8 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:37,549 INFO L186 Difference]: Start difference. First operand has 76 places, 99 transitions, 247 flow. Second operand 7 states and 1801 transitions. [2021-10-15 19:25:37,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 111 transitions, 343 flow [2021-10-15 19:25:37,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 111 transitions, 340 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:25:37,553 INFO L242 Difference]: Finished difference. Result has 84 places, 111 transitions, 355 flow [2021-10-15 19:25:37,553 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=355, PETRI_PLACES=84, PETRI_TRANSITIONS=111} [2021-10-15 19:25:37,554 INFO L334 CegarLoopForPetriNet]: 221 programPoint places, -137 predicate places. [2021-10-15 19:25:37,554 INFO L470 AbstractCegarLoop]: Abstraction has has 84 places, 111 transitions, 355 flow [2021-10-15 19:25:37,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 253.33333333333334) internal successors, (1520), 6 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:37,555 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:25:37,555 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:25:37,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-15 19:25:37,556 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:25:37,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:25:37,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1877204683, now seen corresponding path program 1 times [2021-10-15 19:25:37,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:25:37,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984048727] [2021-10-15 19:25:37,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:25:37,557 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:25:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:25:37,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:25:37,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:25:37,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984048727] [2021-10-15 19:25:37,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984048727] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:25:37,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:25:37,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-15 19:25:37,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013340093] [2021-10-15 19:25:37,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 19:25:37,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:25:37,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 19:25:37,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:25:37,659 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 336 [2021-10-15 19:25:37,662 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 111 transitions, 355 flow. Second operand has 8 states, 8 states have (on average 274.125) internal successors, (2193), 8 states have internal predecessors, (2193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:37,662 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:25:37,662 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 336 [2021-10-15 19:25:37,662 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:25:38,116 INFO L129 PetriNetUnfolder]: 450/1564 cut-off events. [2021-10-15 19:25:38,117 INFO L130 PetriNetUnfolder]: For 133/133 co-relation queries the response was YES. [2021-10-15 19:25:38,122 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2307 conditions, 1564 events. 450/1564 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 8507 event pairs, 0 based on Foata normal form. 0/1246 useless extension candidates. Maximal degree in co-relation 2298. Up to 168 conditions per place. [2021-10-15 19:25:38,129 INFO L132 encePairwiseOnDemand]: 323/336 looper letters, 54 selfloop transitions, 31 changer transitions 0/174 dead transitions. [2021-10-15 19:25:38,130 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 174 transitions, 759 flow [2021-10-15 19:25:38,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-15 19:25:38,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-15 19:25:38,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3636 transitions. [2021-10-15 19:25:38,142 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8324175824175825 [2021-10-15 19:25:38,142 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3636 transitions. [2021-10-15 19:25:38,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3636 transitions. [2021-10-15 19:25:38,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:25:38,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3636 transitions. [2021-10-15 19:25:38,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 279.6923076923077) internal successors, (3636), 13 states have internal predecessors, (3636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:38,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 336.0) internal successors, (4704), 14 states have internal predecessors, (4704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:38,173 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 336.0) internal successors, (4704), 14 states have internal predecessors, (4704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:38,173 INFO L186 Difference]: Start difference. First operand has 84 places, 111 transitions, 355 flow. Second operand 13 states and 3636 transitions. [2021-10-15 19:25:38,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 174 transitions, 759 flow [2021-10-15 19:25:38,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 174 transitions, 756 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:25:38,184 INFO L242 Difference]: Finished difference. Result has 101 places, 137 transitions, 572 flow [2021-10-15 19:25:38,185 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=572, PETRI_PLACES=101, PETRI_TRANSITIONS=137} [2021-10-15 19:25:38,185 INFO L334 CegarLoopForPetriNet]: 221 programPoint places, -120 predicate places. [2021-10-15 19:25:38,185 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 137 transitions, 572 flow [2021-10-15 19:25:38,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 274.125) internal successors, (2193), 8 states have internal predecessors, (2193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:38,187 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:25:38,187 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2021-10-15 19:25:38,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-15 19:25:38,188 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:25:38,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:25:38,188 INFO L82 PathProgramCache]: Analyzing trace with hash 26564831, now seen corresponding path program 1 times [2021-10-15 19:25:38,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:25:38,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882287101] [2021-10-15 19:25:38,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:25:38,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:25:38,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:25:38,269 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-15 19:25:38,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:25:38,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882287101] [2021-10-15 19:25:38,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882287101] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:25:38,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:25:38,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:25:38,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47457939] [2021-10-15 19:25:38,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:25:38,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:25:38,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:25:38,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:25:38,274 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 336 [2021-10-15 19:25:38,275 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 137 transitions, 572 flow. Second operand has 5 states, 5 states have (on average 234.2) internal successors, (1171), 5 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:38,275 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:25:38,275 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 336 [2021-10-15 19:25:38,276 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:25:38,443 INFO L129 PetriNetUnfolder]: 217/884 cut-off events. [2021-10-15 19:25:38,443 INFO L130 PetriNetUnfolder]: For 196/196 co-relation queries the response was YES. [2021-10-15 19:25:38,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1604 conditions, 884 events. 217/884 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3862 event pairs, 0 based on Foata normal form. 0/745 useless extension candidates. Maximal degree in co-relation 1589. Up to 86 conditions per place. [2021-10-15 19:25:38,449 INFO L132 encePairwiseOnDemand]: 319/336 looper letters, 21 selfloop transitions, 19 changer transitions 0/143 dead transitions. [2021-10-15 19:25:38,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 143 transitions, 640 flow [2021-10-15 19:25:38,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:25:38,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:25:38,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1437 transitions. [2021-10-15 19:25:38,455 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7127976190476191 [2021-10-15 19:25:38,455 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1437 transitions. [2021-10-15 19:25:38,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1437 transitions. [2021-10-15 19:25:38,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:25:38,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1437 transitions. [2021-10-15 19:25:38,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 239.5) internal successors, (1437), 6 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:38,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 336.0) internal successors, (2352), 7 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:38,467 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 336.0) internal successors, (2352), 7 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:38,467 INFO L186 Difference]: Start difference. First operand has 101 places, 137 transitions, 572 flow. Second operand 6 states and 1437 transitions. [2021-10-15 19:25:38,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 143 transitions, 640 flow [2021-10-15 19:25:38,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 143 transitions, 619 flow, removed 7 selfloop flow, removed 3 redundant places. [2021-10-15 19:25:38,481 INFO L242 Difference]: Finished difference. Result has 107 places, 143 transitions, 637 flow [2021-10-15 19:25:38,481 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=637, PETRI_PLACES=107, PETRI_TRANSITIONS=143} [2021-10-15 19:25:38,481 INFO L334 CegarLoopForPetriNet]: 221 programPoint places, -114 predicate places. [2021-10-15 19:25:38,481 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 143 transitions, 637 flow [2021-10-15 19:25:38,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 234.2) internal successors, (1171), 5 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:38,491 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:25:38,491 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1] [2021-10-15 19:25:38,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-15 19:25:38,492 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:25:38,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:25:38,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1967630623, now seen corresponding path program 1 times [2021-10-15 19:25:38,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:25:38,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562662564] [2021-10-15 19:25:38,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:25:38,493 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:25:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:25:38,600 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-15 19:25:38,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:25:38,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562662564] [2021-10-15 19:25:38,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562662564] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:25:38,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:25:38,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:25:38,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134003232] [2021-10-15 19:25:38,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:25:38,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:25:38,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:25:38,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:25:38,606 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 336 [2021-10-15 19:25:38,609 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 143 transitions, 637 flow. Second operand has 6 states, 6 states have (on average 273.5) internal successors, (1641), 6 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:38,609 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:25:38,609 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 336 [2021-10-15 19:25:38,609 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:25:39,122 INFO L129 PetriNetUnfolder]: 830/3349 cut-off events. [2021-10-15 19:25:39,122 INFO L130 PetriNetUnfolder]: For 868/868 co-relation queries the response was YES. [2021-10-15 19:25:39,135 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6236 conditions, 3349 events. 830/3349 cut-off events. For 868/868 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 26397 event pairs, 0 based on Foata normal form. 6/2786 useless extension candidates. Maximal degree in co-relation 6217. Up to 468 conditions per place. [2021-10-15 19:25:39,149 INFO L132 encePairwiseOnDemand]: 321/336 looper letters, 24 selfloop transitions, 25 changer transitions 0/174 dead transitions. [2021-10-15 19:25:39,150 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 174 transitions, 813 flow [2021-10-15 19:25:39,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-15 19:25:39,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-15 19:25:39,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3045 transitions. [2021-10-15 19:25:39,159 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8238636363636364 [2021-10-15 19:25:39,159 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3045 transitions. [2021-10-15 19:25:39,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3045 transitions. [2021-10-15 19:25:39,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:25:39,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3045 transitions. [2021-10-15 19:25:39,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 276.8181818181818) internal successors, (3045), 11 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:39,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 336.0) internal successors, (4032), 12 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:39,212 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 336.0) internal successors, (4032), 12 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:39,212 INFO L186 Difference]: Start difference. First operand has 107 places, 143 transitions, 637 flow. Second operand 11 states and 3045 transitions. [2021-10-15 19:25:39,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 174 transitions, 813 flow [2021-10-15 19:25:39,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 174 transitions, 811 flow, removed 1 selfloop flow, removed 0 redundant places. [2021-10-15 19:25:39,232 INFO L242 Difference]: Finished difference. Result has 126 places, 166 transitions, 828 flow [2021-10-15 19:25:39,233 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=828, PETRI_PLACES=126, PETRI_TRANSITIONS=166} [2021-10-15 19:25:39,233 INFO L334 CegarLoopForPetriNet]: 221 programPoint places, -95 predicate places. [2021-10-15 19:25:39,233 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 166 transitions, 828 flow [2021-10-15 19:25:39,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 273.5) internal successors, (1641), 6 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:39,234 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:25:39,235 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, 1, 1, 1, 1, 1] [2021-10-15 19:25:39,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-15 19:25:39,235 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:25:39,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:25:39,236 INFO L82 PathProgramCache]: Analyzing trace with hash -2090914085, now seen corresponding path program 1 times [2021-10-15 19:25:39,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:25:39,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046965171] [2021-10-15 19:25:39,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:25:39,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:25:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:25:39,326 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-15 19:25:39,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:25:39,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046965171] [2021-10-15 19:25:39,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046965171] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:25:39,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:25:39,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-15 19:25:39,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554777367] [2021-10-15 19:25:39,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 19:25:39,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:25:39,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 19:25:39,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:25:39,332 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 336 [2021-10-15 19:25:39,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 166 transitions, 828 flow. Second operand has 8 states, 8 states have (on average 253.625) internal successors, (2029), 8 states have internal predecessors, (2029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:39,334 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:25:39,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 336 [2021-10-15 19:25:39,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:25:40,341 INFO L129 PetriNetUnfolder]: 1108/5045 cut-off events. [2021-10-15 19:25:40,341 INFO L130 PetriNetUnfolder]: For 3599/3599 co-relation queries the response was YES. [2021-10-15 19:25:40,366 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10698 conditions, 5045 events. 1108/5045 cut-off events. For 3599/3599 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 47369 event pairs, 51 based on Foata normal form. 92/4381 useless extension candidates. Maximal degree in co-relation 10670. Up to 678 conditions per place. [2021-10-15 19:25:40,387 INFO L132 encePairwiseOnDemand]: 315/336 looper letters, 23 selfloop transitions, 39 changer transitions 0/185 dead transitions. [2021-10-15 19:25:40,387 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 185 transitions, 1045 flow [2021-10-15 19:25:40,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-15 19:25:40,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-15 19:25:40,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3085 transitions. [2021-10-15 19:25:40,397 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7651289682539683 [2021-10-15 19:25:40,397 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3085 transitions. [2021-10-15 19:25:40,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3085 transitions. [2021-10-15 19:25:40,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:25:40,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3085 transitions. [2021-10-15 19:25:40,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 257.0833333333333) internal successors, (3085), 12 states have internal predecessors, (3085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:40,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 336.0) internal successors, (4368), 13 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:40,419 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 336.0) internal successors, (4368), 13 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:40,419 INFO L186 Difference]: Start difference. First operand has 126 places, 166 transitions, 828 flow. Second operand 12 states and 3085 transitions. [2021-10-15 19:25:40,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 185 transitions, 1045 flow [2021-10-15 19:25:40,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 185 transitions, 1033 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:25:40,466 INFO L242 Difference]: Finished difference. Result has 140 places, 185 transitions, 1050 flow [2021-10-15 19:25:40,467 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1050, PETRI_PLACES=140, PETRI_TRANSITIONS=185} [2021-10-15 19:25:40,467 INFO L334 CegarLoopForPetriNet]: 221 programPoint places, -81 predicate places. [2021-10-15 19:25:40,467 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 185 transitions, 1050 flow [2021-10-15 19:25:40,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 253.625) internal successors, (2029), 8 states have internal predecessors, (2029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:40,468 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:25:40,468 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, 1, 1, 1, 1, 1] [2021-10-15 19:25:40,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-15 19:25:40,469 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 19:25:40,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:25:40,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1827053301, now seen corresponding path program 2 times [2021-10-15 19:25:40,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:25:40,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89212645] [2021-10-15 19:25:40,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:25:40,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:25:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:25:40,553 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-15 19:25:40,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:25:40,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89212645] [2021-10-15 19:25:40,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89212645] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:25:40,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:25:40,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:25:40,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64798496] [2021-10-15 19:25:40,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:25:40,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:25:40,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:25:40,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:25:40,561 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 336 [2021-10-15 19:25:40,563 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 185 transitions, 1050 flow. Second operand has 5 states, 5 states have (on average 246.8) internal successors, (1234), 5 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:40,563 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:25:40,563 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 336 [2021-10-15 19:25:40,563 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:25:42,098 INFO L129 PetriNetUnfolder]: 1955/8867 cut-off events. [2021-10-15 19:25:42,098 INFO L130 PetriNetUnfolder]: For 6989/6989 co-relation queries the response was YES. [2021-10-15 19:25:42,159 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20835 conditions, 8867 events. 1955/8867 cut-off events. For 6989/6989 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 84128 event pairs, 91 based on Foata normal form. 0/7565 useless extension candidates. Maximal degree in co-relation 20803. Up to 1194 conditions per place. [2021-10-15 19:25:42,202 INFO L132 encePairwiseOnDemand]: 321/336 looper letters, 74 selfloop transitions, 40 changer transitions 0/261 dead transitions. [2021-10-15 19:25:42,202 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 261 transitions, 1675 flow [2021-10-15 19:25:42,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-15 19:25:42,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-15 19:25:42,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2273 transitions. [2021-10-15 19:25:42,209 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7516534391534392 [2021-10-15 19:25:42,209 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2273 transitions. [2021-10-15 19:25:42,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2273 transitions. [2021-10-15 19:25:42,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:25:42,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2273 transitions. [2021-10-15 19:25:42,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 252.55555555555554) internal successors, (2273), 9 states have internal predecessors, (2273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:42,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 336.0) internal successors, (3360), 10 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:42,225 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 336.0) internal successors, (3360), 10 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:42,225 INFO L186 Difference]: Start difference. First operand has 140 places, 185 transitions, 1050 flow. Second operand 9 states and 2273 transitions. [2021-10-15 19:25:42,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 261 transitions, 1675 flow [2021-10-15 19:25:42,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 261 transitions, 1647 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-10-15 19:25:42,286 INFO L242 Difference]: Finished difference. Result has 149 places, 215 transitions, 1318 flow [2021-10-15 19:25:42,287 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1318, PETRI_PLACES=149, PETRI_TRANSITIONS=215} [2021-10-15 19:25:42,287 INFO L334 CegarLoopForPetriNet]: 221 programPoint places, -72 predicate places. [2021-10-15 19:25:42,287 INFO L470 AbstractCegarLoop]: Abstraction has has 149 places, 215 transitions, 1318 flow [2021-10-15 19:25:42,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 246.8) internal successors, (1234), 5 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:42,288 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:25:42,288 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:25:42,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-15 19:25:42,288 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 19:25:42,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:25:42,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1779570107, now seen corresponding path program 1 times [2021-10-15 19:25:42,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:25:42,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065808169] [2021-10-15 19:25:42,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:25:42,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:25:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:25:42,350 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-15 19:25:42,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:25:42,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065808169] [2021-10-15 19:25:42,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065808169] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:25:42,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:25:42,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:25:42,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244145216] [2021-10-15 19:25:42,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:25:42,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:25:42,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:25:42,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:25:42,356 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 336 [2021-10-15 19:25:42,358 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 215 transitions, 1318 flow. Second operand has 5 states, 5 states have (on average 282.4) internal successors, (1412), 5 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:42,358 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:25:42,358 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 336 [2021-10-15 19:25:42,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:25:44,445 INFO L129 PetriNetUnfolder]: 3332/15264 cut-off events. [2021-10-15 19:25:44,445 INFO L130 PetriNetUnfolder]: For 11530/11530 co-relation queries the response was YES. [2021-10-15 19:25:44,527 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33879 conditions, 15264 events. 3332/15264 cut-off events. For 11530/11530 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 162906 event pairs, 131 based on Foata normal form. 20/13033 useless extension candidates. Maximal degree in co-relation 33845. Up to 2166 conditions per place. [2021-10-15 19:25:44,566 INFO L132 encePairwiseOnDemand]: 330/336 looper letters, 22 selfloop transitions, 5 changer transitions 0/227 dead transitions. [2021-10-15 19:25:44,566 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 227 transitions, 1434 flow [2021-10-15 19:25:44,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:25:44,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:25:44,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1422 transitions. [2021-10-15 19:25:44,571 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8464285714285714 [2021-10-15 19:25:44,571 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1422 transitions. [2021-10-15 19:25:44,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1422 transitions. [2021-10-15 19:25:44,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:25:44,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1422 transitions. [2021-10-15 19:25:44,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 284.4) internal successors, (1422), 5 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:44,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 336.0) internal successors, (2016), 6 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:44,581 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 336.0) internal successors, (2016), 6 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:44,581 INFO L186 Difference]: Start difference. First operand has 149 places, 215 transitions, 1318 flow. Second operand 5 states and 1422 transitions. [2021-10-15 19:25:44,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 227 transitions, 1434 flow [2021-10-15 19:25:44,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 227 transitions, 1432 flow, removed 1 selfloop flow, removed 0 redundant places. [2021-10-15 19:25:44,689 INFO L242 Difference]: Finished difference. Result has 156 places, 219 transitions, 1354 flow [2021-10-15 19:25:44,690 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=1316, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1354, PETRI_PLACES=156, PETRI_TRANSITIONS=219} [2021-10-15 19:25:44,690 INFO L334 CegarLoopForPetriNet]: 221 programPoint places, -65 predicate places. [2021-10-15 19:25:44,690 INFO L470 AbstractCegarLoop]: Abstraction has has 156 places, 219 transitions, 1354 flow [2021-10-15 19:25:44,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.4) internal successors, (1412), 5 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:44,691 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:25:44,691 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:25:44,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-15 19:25:44,692 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:25:44,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:25:44,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1078505529, now seen corresponding path program 1 times [2021-10-15 19:25:44,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:25:44,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860861513] [2021-10-15 19:25:44,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:25:44,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:25:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:25:44,787 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:25:44,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:25:44,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860861513] [2021-10-15 19:25:44,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860861513] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:25:44,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144253603] [2021-10-15 19:25:44,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:25:44,788 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:25:44,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64bd626-41a9-49c9-9c07-e822b26a3b6e/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:25:44,790 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64bd626-41a9-49c9-9c07-e822b26a3b6e/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:25:44,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64bd626-41a9-49c9-9c07-e822b26a3b6e/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-15 19:25:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:25:44,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-15 19:25:44,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:25:45,157 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:25:45,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144253603] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:25:45,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 19:25:45,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-10-15 19:25:45,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121621677] [2021-10-15 19:25:45,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 19:25:45,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:25:45,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 19:25:45,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:25:45,162 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 336 [2021-10-15 19:25:45,164 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 219 transitions, 1354 flow. Second operand has 8 states, 8 states have (on average 279.75) internal successors, (2238), 8 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:45,164 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:25:45,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 336 [2021-10-15 19:25:45,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:25:47,177 INFO L129 PetriNetUnfolder]: 2290/11080 cut-off events. [2021-10-15 19:25:47,177 INFO L130 PetriNetUnfolder]: For 11161/11161 co-relation queries the response was YES. [2021-10-15 19:25:47,218 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26020 conditions, 11080 events. 2290/11080 cut-off events. For 11161/11161 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 101233 event pairs, 50 based on Foata normal form. 296/9830 useless extension candidates. Maximal degree in co-relation 25982. Up to 1512 conditions per place. [2021-10-15 19:25:47,254 INFO L132 encePairwiseOnDemand]: 323/336 looper letters, 46 selfloop transitions, 56 changer transitions 0/268 dead transitions. [2021-10-15 19:25:47,254 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 268 transitions, 1855 flow [2021-10-15 19:25:47,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-15 19:25:47,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-15 19:25:47,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3423 transitions. [2021-10-15 19:25:47,264 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8489583333333334 [2021-10-15 19:25:47,264 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3423 transitions. [2021-10-15 19:25:47,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3423 transitions. [2021-10-15 19:25:47,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:25:47,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3423 transitions. [2021-10-15 19:25:47,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 285.25) internal successors, (3423), 12 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:47,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 336.0) internal successors, (4368), 13 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:47,287 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 336.0) internal successors, (4368), 13 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:47,287 INFO L186 Difference]: Start difference. First operand has 156 places, 219 transitions, 1354 flow. Second operand 12 states and 3423 transitions. [2021-10-15 19:25:47,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 268 transitions, 1855 flow [2021-10-15 19:25:47,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 268 transitions, 1851 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-10-15 19:25:47,383 INFO L242 Difference]: Finished difference. Result has 173 places, 242 transitions, 1731 flow [2021-10-15 19:25:47,384 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=1326, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1731, PETRI_PLACES=173, PETRI_TRANSITIONS=242} [2021-10-15 19:25:47,384 INFO L334 CegarLoopForPetriNet]: 221 programPoint places, -48 predicate places. [2021-10-15 19:25:47,384 INFO L470 AbstractCegarLoop]: Abstraction has has 173 places, 242 transitions, 1731 flow [2021-10-15 19:25:47,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 279.75) internal successors, (2238), 8 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:47,385 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:25:47,385 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2021-10-15 19:25:47,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64bd626-41a9-49c9-9c07-e822b26a3b6e/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-15 19:25:47,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64bd626-41a9-49c9-9c07-e822b26a3b6e/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-15 19:25:47,606 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:25:47,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:25:47,607 INFO L82 PathProgramCache]: Analyzing trace with hash 791216067, now seen corresponding path program 2 times [2021-10-15 19:25:47,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:25:47,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727743110] [2021-10-15 19:25:47,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:25:47,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:25:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:25:47,779 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-15 19:25:47,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:25:47,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727743110] [2021-10-15 19:25:47,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727743110] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:25:47,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:25:47,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:25:47,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746712991] [2021-10-15 19:25:47,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:25:47,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:25:47,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:25:47,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:25:47,784 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 336 [2021-10-15 19:25:47,785 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 242 transitions, 1731 flow. Second operand has 5 states, 5 states have (on average 271.8) internal successors, (1359), 5 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:47,786 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:25:47,786 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 336 [2021-10-15 19:25:47,786 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:25:48,629 INFO L129 PetriNetUnfolder]: 867/4498 cut-off events. [2021-10-15 19:25:48,630 INFO L130 PetriNetUnfolder]: For 5663/5663 co-relation queries the response was YES. [2021-10-15 19:25:48,645 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10736 conditions, 4498 events. 867/4498 cut-off events. For 5663/5663 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 36067 event pairs, 30 based on Foata normal form. 22/3841 useless extension candidates. Maximal degree in co-relation 10692. Up to 630 conditions per place. [2021-10-15 19:25:48,647 INFO L132 encePairwiseOnDemand]: 328/336 looper letters, 0 selfloop transitions, 0 changer transitions 173/173 dead transitions. [2021-10-15 19:25:48,648 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 173 transitions, 1270 flow [2021-10-15 19:25:48,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:25:48,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:25:48,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1372 transitions. [2021-10-15 19:25:48,652 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2021-10-15 19:25:48,653 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1372 transitions. [2021-10-15 19:25:48,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1372 transitions. [2021-10-15 19:25:48,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:25:48,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1372 transitions. [2021-10-15 19:25:48,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 274.4) internal successors, (1372), 5 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:48,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 336.0) internal successors, (2016), 6 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:48,662 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 336.0) internal successors, (2016), 6 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:48,662 INFO L186 Difference]: Start difference. First operand has 173 places, 242 transitions, 1731 flow. Second operand 5 states and 1372 transitions. [2021-10-15 19:25:48,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 173 transitions, 1270 flow [2021-10-15 19:25:48,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 173 transitions, 1152 flow, removed 13 selfloop flow, removed 14 redundant places. [2021-10-15 19:25:48,698 INFO L242 Difference]: Finished difference. Result has 146 places, 0 transitions, 0 flow [2021-10-15 19:25:48,699 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=943, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=146, PETRI_TRANSITIONS=0} [2021-10-15 19:25:48,699 INFO L334 CegarLoopForPetriNet]: 221 programPoint places, -75 predicate places. [2021-10-15 19:25:48,699 INFO L470 AbstractCegarLoop]: Abstraction has has 146 places, 0 transitions, 0 flow [2021-10-15 19:25:48,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 271.8) internal successors, (1359), 5 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:48,702 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:25:48,702 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:25:48,703 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:25:48,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-15 19:25:48,708 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:25:48,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:25:48 BoogieIcfgContainer [2021-10-15 19:25:48,717 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:25:48,717 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:25:48,717 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:25:48,718 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:25:48,718 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:25:35" (3/4) ... [2021-10-15 19:25:48,722 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:25:48,755 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 41 nodes and edges [2021-10-15 19:25:48,757 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-15 19:25:48,759 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-15 19:25:48,762 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-15 19:25:48,764 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-15 19:25:48,766 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:25:48,768 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:25:48,913 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64bd626-41a9-49c9-9c07-e822b26a3b6e/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:25:48,914 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:25:48,915 INFO L168 Benchmark]: Toolchain (without parser) took 15177.67 ms. Allocated memory was 117.4 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 83.2 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 356.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:25:48,916 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 81.8 MB. Free memory was 55.1 MB in the beginning and 55.0 MB in the end (delta: 32.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:25:48,916 INFO L168 Benchmark]: CACSL2BoogieTranslator took 567.86 ms. Allocated memory is still 117.4 MB. Free memory was 82.9 MB in the beginning and 86.5 MB in the end (delta: -3.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:25:48,916 INFO L168 Benchmark]: Boogie Procedure Inliner took 115.39 ms. Allocated memory is still 117.4 MB. Free memory was 86.5 MB in the beginning and 80.6 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-15 19:25:48,917 INFO L168 Benchmark]: Boogie Preprocessor took 72.83 ms. Allocated memory is still 117.4 MB. Free memory was 80.6 MB in the beginning and 76.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:25:48,917 INFO L168 Benchmark]: RCFGBuilder took 1192.52 ms. Allocated memory is still 117.4 MB. Free memory was 76.4 MB in the beginning and 73.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 45.3 MB. Max. memory is 16.1 GB. [2021-10-15 19:25:48,918 INFO L168 Benchmark]: TraceAbstraction took 13013.62 ms. Allocated memory was 117.4 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 72.9 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 580.0 MB. Max. memory is 16.1 GB. [2021-10-15 19:25:48,918 INFO L168 Benchmark]: Witness Printer took 196.48 ms. Allocated memory is still 1.7 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 18.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-15 19:25:48,920 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 81.8 MB. Free memory was 55.1 MB in the beginning and 55.0 MB in the end (delta: 32.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 567.86 ms. Allocated memory is still 117.4 MB. Free memory was 82.9 MB in the beginning and 86.5 MB in the end (delta: -3.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 115.39 ms. Allocated memory is still 117.4 MB. Free memory was 86.5 MB in the beginning and 80.6 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 72.83 ms. Allocated memory is still 117.4 MB. Free memory was 80.6 MB in the beginning and 76.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1192.52 ms. Allocated memory is still 117.4 MB. Free memory was 76.4 MB in the beginning and 73.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 45.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13013.62 ms. Allocated memory was 117.4 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 72.9 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 580.0 MB. Max. memory is 16.1 GB. * Witness Printer took 196.48 ms. Allocated memory is still 1.7 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 18.9 MB). Peak memory consumption was 16.8 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 - PositiveResult [Line: 54]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 54]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 54]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 225 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 9.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 12950.1ms, OverallIterations: 14, TraceHistogramMax: 3, EmptinessCheckTime: 0.0ms, AutomataDifference: 10466.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 111.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 161 SDtfs, 479 SDslu, 313 SDs, 0 SdLazy, 636 SolverSat, 147 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 960.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 185 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 545.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1731occurred in iteration=13, InterpolantAutomatonStates: 96, 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: 87.8ms SsaConstructionTime, 467.6ms SatisfiabilityAnalysisTime, 1222.6ms InterpolantComputationTime, 651 NumberOfCodeBlocks, 651 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 636 ConstructedInterpolants, 0 QuantifiedInterpolants, 1218 SizeOfPredicates, 3 NumberOfNonLiveVariables, 456 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 145/151 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-15 19:25:48,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64bd626-41a9-49c9-9c07-e822b26a3b6e/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...