./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product45.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_62adbf7a-bab1-4466-9646-7d12010e911b/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62adbf7a-bab1-4466-9646-7d12010e911b/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_62adbf7a-bab1-4466-9646-7d12010e911b/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62adbf7a-bab1-4466-9646-7d12010e911b/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62adbf7a-bab1-4466-9646-7d12010e911b/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_62adbf7a-bab1-4466-9646-7d12010e911b/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 7e14ab650d1845effe211c50ad207dbd41c77334 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:53:58,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:53:58,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:53:58,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:53:58,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:53:58,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:53:58,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:53:58,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:53:58,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:53:58,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:53:58,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:53:58,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:53:58,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:53:58,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:53:58,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:53:58,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:53:58,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:53:58,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:53:58,523 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:53:58,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:53:58,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:53:58,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:53:58,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:53:58,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:53:58,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:53:58,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:53:58,551 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:53:58,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:53:58,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:53:58,556 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:53:58,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:53:58,558 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:53:58,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:53:58,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:53:58,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:53:58,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:53:58,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:53:58,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:53:58,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:53:58,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:53:58,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:53:58,568 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62adbf7a-bab1-4466-9646-7d12010e911b/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:53:58,614 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:53:58,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:53:58,615 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:53:58,615 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:53:58,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:53:58,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:53:58,617 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:53:58,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:53:58,618 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:53:58,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:53:58,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:53:58,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:53:58,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:53:58,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:53:58,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:53:58,620 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:53:58,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:53:58,620 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:53:58,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:53:58,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:53:58,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:53:58,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:53:58,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:53:58,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:53:58,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:53:58,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:53:58,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:53:58,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:53:58,623 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:53:58,624 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:53:58,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:53:58,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:53:58,625 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_62adbf7a-bab1-4466-9646-7d12010e911b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62adbf7a-bab1-4466-9646-7d12010e911b/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e14ab650d1845effe211c50ad207dbd41c77334 [2021-10-15 19:53:58,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:53:58,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:53:58,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:53:58,950 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:53:58,951 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:53:58,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62adbf7a-bab1-4466-9646-7d12010e911b/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c [2021-10-15 19:53:59,047 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62adbf7a-bab1-4466-9646-7d12010e911b/bin/uautomizer-hJ6jxDFKc3/data/99114e3e5/75c3ee634f21451dbf0aa925dc9feb84/FLAG2e043c879 [2021-10-15 19:53:59,578 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:53:59,578 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62adbf7a-bab1-4466-9646-7d12010e911b/sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c [2021-10-15 19:53:59,594 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62adbf7a-bab1-4466-9646-7d12010e911b/bin/uautomizer-hJ6jxDFKc3/data/99114e3e5/75c3ee634f21451dbf0aa925dc9feb84/FLAG2e043c879 [2021-10-15 19:53:59,892 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62adbf7a-bab1-4466-9646-7d12010e911b/bin/uautomizer-hJ6jxDFKc3/data/99114e3e5/75c3ee634f21451dbf0aa925dc9feb84 [2021-10-15 19:53:59,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:53:59,895 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:53:59,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:53:59,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:53:59,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:53:59,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:53:59" (1/1) ... [2021-10-15 19:53:59,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f85c869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:53:59, skipping insertion in model container [2021-10-15 19:53:59,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:53:59" (1/1) ... [2021-10-15 19:53:59,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:53:59,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:54:00,235 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_62adbf7a-bab1-4466-9646-7d12010e911b/sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c[11292,11305] [2021-10-15 19:54:00,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:54:00,306 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:54:00,392 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_62adbf7a-bab1-4466-9646-7d12010e911b/sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c[11292,11305] [2021-10-15 19:54:00,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:54:00,449 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:54:00,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:54:00 WrapperNode [2021-10-15 19:54:00,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:54:00,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:54:00,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:54:00,451 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:54:00,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:54:00" (1/1) ... [2021-10-15 19:54:00,481 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:54:00" (1/1) ... [2021-10-15 19:54:00,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:54:00,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:54:00,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:54:00,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:54:00,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:54:00" (1/1) ... [2021-10-15 19:54:00,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:54:00" (1/1) ... [2021-10-15 19:54:00,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:54:00" (1/1) ... [2021-10-15 19:54:00,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:54:00" (1/1) ... [2021-10-15 19:54:00,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:54:00" (1/1) ... [2021-10-15 19:54:00,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:54:00" (1/1) ... [2021-10-15 19:54:00,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:54:00" (1/1) ... [2021-10-15 19:54:00,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:54:00,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:54:00,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:54:00,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:54:00,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:54:00" (1/1) ... [2021-10-15 19:54:00,654 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:54:00,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62adbf7a-bab1-4466-9646-7d12010e911b/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:54:00,717 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62adbf7a-bab1-4466-9646-7d12010e911b/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:54:00,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62adbf7a-bab1-4466-9646-7d12010e911b/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:54:00,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:54:00,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:54:00,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:54:00,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:54:01,815 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:54:01,816 INFO L299 CfgBuilder]: Removed 194 assume(true) statements. [2021-10-15 19:54:01,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:54:01 BoogieIcfgContainer [2021-10-15 19:54:01,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:54:01,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:54:01,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:54:01,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:54:01,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:53:59" (1/3) ... [2021-10-15 19:54:01,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512ddd07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:54:01, skipping insertion in model container [2021-10-15 19:54:01,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:54:00" (2/3) ... [2021-10-15 19:54:01,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512ddd07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:54:01, skipping insertion in model container [2021-10-15 19:54:01,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:54:01" (3/3) ... [2021-10-15 19:54:01,828 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product45.cil.c [2021-10-15 19:54:01,834 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:54:01,834 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-15 19:54:01,888 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:54:01,895 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 19:54:01,896 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-15 19:54:01,913 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 133 places, 199 transitions, 398 flow [2021-10-15 19:54:01,966 INFO L129 PetriNetUnfolder]: 67/199 cut-off events. [2021-10-15 19:54:01,967 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:54:01,969 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 199 events. 67/199 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 544 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2021-10-15 19:54:01,969 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 199 transitions, 398 flow [2021-10-15 19:54:01,978 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 192 transitions, 384 flow [2021-10-15 19:54:01,989 INFO L129 PetriNetUnfolder]: 23/77 cut-off events. [2021-10-15 19:54:01,989 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:54:01,989 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:54:01,990 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:54:01,991 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 19:54:01,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:54:01,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1699643460, now seen corresponding path program 1 times [2021-10-15 19:54:02,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:54:02,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440353980] [2021-10-15 19:54:02,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:54:02,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:54:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:54:02,341 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 19:54:02,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:54:02,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440353980] [2021-10-15 19:54:02,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440353980] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:54:02,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:54:02,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:54:02,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146050111] [2021-10-15 19:54:02,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:54:02,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:54:02,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:54:02,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:54:02,389 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 199 [2021-10-15 19:54:02,398 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 192 transitions, 384 flow. Second operand has 2 states, 2 states have (on average 192.5) internal successors, (385), 2 states have internal predecessors, (385), 0 states have call successors, (0), 0 states 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 19:54:02,399 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:54:02,399 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 199 [2021-10-15 19:54:02,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:54:02,465 INFO L129 PetriNetUnfolder]: 59/187 cut-off events. [2021-10-15 19:54:02,466 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:54:02,468 INFO L84 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 187 events. 59/187 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 520 event pairs, 0 based on Foata normal form. 4/130 useless extension candidates. Maximal degree in co-relation 187. Up to 10 conditions per place. [2021-10-15 19:54:02,472 INFO L132 encePairwiseOnDemand]: 194/199 looper letters, 0 selfloop transitions, 0 changer transitions 0/187 dead transitions. [2021-10-15 19:54:02,473 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 187 transitions, 374 flow [2021-10-15 19:54:02,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:54:02,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 19:54:02,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 389 transitions. [2021-10-15 19:54:02,493 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9773869346733668 [2021-10-15 19:54:02,494 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 389 transitions. [2021-10-15 19:54:02,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 389 transitions. [2021-10-15 19:54:02,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:54:02,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 389 transitions. [2021-10-15 19:54:02,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 194.5) internal successors, (389), 2 states have internal predecessors, (389), 0 states have call successors, (0), 0 states 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 19:54:02,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states 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 19:54:02,514 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states 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 19:54:02,516 INFO L186 Difference]: Start difference. First operand has 129 places, 192 transitions, 384 flow. Second operand 2 states and 389 transitions. [2021-10-15 19:54:02,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 187 transitions, 374 flow [2021-10-15 19:54:02,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 187 transitions, 374 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:54:02,528 INFO L242 Difference]: Finished difference. Result has 130 places, 187 transitions, 374 flow [2021-10-15 19:54:02,531 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=374, PETRI_PLACES=130, PETRI_TRANSITIONS=187} [2021-10-15 19:54:02,532 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 1 predicate places. [2021-10-15 19:54:02,532 INFO L470 AbstractCegarLoop]: Abstraction has has 130 places, 187 transitions, 374 flow [2021-10-15 19:54:02,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 192.5) internal successors, (385), 2 states have internal predecessors, (385), 0 states have call successors, (0), 0 states 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 19:54:02,538 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:54:02,538 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:54:02,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:54:02,539 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 19:54:02,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:54:02,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1480807491, now seen corresponding path program 1 times [2021-10-15 19:54:02,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:54:02,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692496442] [2021-10-15 19:54:02,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:54:02,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:54:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:54:02,674 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 19:54:02,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:54:02,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692496442] [2021-10-15 19:54:02,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692496442] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:54:02,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:54:02,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:54:02,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722888703] [2021-10-15 19:54:02,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:54:02,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:54:02,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:54:02,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:54:02,681 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 199 [2021-10-15 19:54:02,683 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 187 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states 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 19:54:02,683 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:54:02,683 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 199 [2021-10-15 19:54:02,683 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:54:02,711 INFO L129 PetriNetUnfolder]: 24/76 cut-off events. [2021-10-15 19:54:02,711 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:54:02,711 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 76 events. 24/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 81 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 78. Up to 10 conditions per place. [2021-10-15 19:54:02,712 INFO L132 encePairwiseOnDemand]: 197/199 looper letters, 1 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2021-10-15 19:54:02,712 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 76 transitions, 156 flow [2021-10-15 19:54:02,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:54:02,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:54:02,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 570 transitions. [2021-10-15 19:54:02,717 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9547738693467337 [2021-10-15 19:54:02,717 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 570 transitions. [2021-10-15 19:54:02,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 570 transitions. [2021-10-15 19:54:02,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:54:02,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 570 transitions. [2021-10-15 19:54:02,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states 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 19:54:02,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states 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 19:54:02,726 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states 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 19:54:02,726 INFO L186 Difference]: Start difference. First operand has 130 places, 187 transitions, 374 flow. Second operand 3 states and 570 transitions. [2021-10-15 19:54:02,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 76 transitions, 156 flow [2021-10-15 19:54:02,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 76 transitions, 156 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:54:02,730 INFO L242 Difference]: Finished difference. Result has 56 places, 76 transitions, 154 flow [2021-10-15 19:54:02,730 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=56, PETRI_TRANSITIONS=76} [2021-10-15 19:54:02,731 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, -73 predicate places. [2021-10-15 19:54:02,731 INFO L470 AbstractCegarLoop]: Abstraction has has 56 places, 76 transitions, 154 flow [2021-10-15 19:54:02,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states 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 19:54:02,732 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:54:02,732 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:54:02,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 19:54:02,733 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 19:54:02,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:54:02,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1380156086, now seen corresponding path program 1 times [2021-10-15 19:54:02,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:54:02,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095101752] [2021-10-15 19:54:02,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:54:02,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:54:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:54:02,884 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 19:54:02,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:54:02,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095101752] [2021-10-15 19:54:02,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095101752] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:54:02,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:54:02,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:54:02,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138801719] [2021-10-15 19:54:02,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:54:02,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:54:02,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:54:02,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:54:02,897 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 199 [2021-10-15 19:54:02,902 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 76 transitions, 154 flow. Second operand has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states 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 19:54:02,902 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:54:02,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 199 [2021-10-15 19:54:02,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:54:03,108 INFO L129 PetriNetUnfolder]: 23/75 cut-off events. [2021-10-15 19:54:03,109 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:54:03,110 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 75 events. 23/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 82 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 82. Up to 9 conditions per place. [2021-10-15 19:54:03,111 INFO L132 encePairwiseOnDemand]: 195/199 looper letters, 3 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2021-10-15 19:54:03,111 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 75 transitions, 164 flow [2021-10-15 19:54:03,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:54:03,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:54:03,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 907 transitions. [2021-10-15 19:54:03,117 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9115577889447236 [2021-10-15 19:54:03,117 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 907 transitions. [2021-10-15 19:54:03,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 907 transitions. [2021-10-15 19:54:03,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:54:03,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 907 transitions. [2021-10-15 19:54:03,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 181.4) internal successors, (907), 5 states have internal predecessors, (907), 0 states have call successors, (0), 0 states 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 19:54:03,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states 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 19:54:03,130 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states 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 19:54:03,130 INFO L186 Difference]: Start difference. First operand has 56 places, 76 transitions, 154 flow. Second operand 5 states and 907 transitions. [2021-10-15 19:54:03,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 75 transitions, 164 flow [2021-10-15 19:54:03,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 75 transitions, 163 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:54:03,134 INFO L242 Difference]: Finished difference. Result has 59 places, 75 transitions, 157 flow [2021-10-15 19:54:03,135 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=157, PETRI_PLACES=59, PETRI_TRANSITIONS=75} [2021-10-15 19:54:03,135 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, -70 predicate places. [2021-10-15 19:54:03,136 INFO L470 AbstractCegarLoop]: Abstraction has has 59 places, 75 transitions, 157 flow [2021-10-15 19:54:03,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states 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 19:54:03,137 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:54:03,137 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] [2021-10-15 19:54:03,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 19:54:03,138 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 19:54:03,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:54:03,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1074913896, now seen corresponding path program 1 times [2021-10-15 19:54:03,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:54:03,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367376088] [2021-10-15 19:54:03,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:54:03,141 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:54:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:54:03,258 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 19:54:03,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:54:03,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367376088] [2021-10-15 19:54:03,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367376088] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:54:03,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:54:03,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:54:03,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561553628] [2021-10-15 19:54:03,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:54:03,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:54:03,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:54:03,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:54:03,263 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 199 [2021-10-15 19:54:03,265 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 75 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states 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 19:54:03,265 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:54:03,265 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 199 [2021-10-15 19:54:03,265 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:54:03,299 INFO L129 PetriNetUnfolder]: 30/104 cut-off events. [2021-10-15 19:54:03,299 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:54:03,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 104 events. 30/104 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 123. Up to 9 conditions per place. [2021-10-15 19:54:03,301 INFO L132 encePairwiseOnDemand]: 189/199 looper letters, 8 selfloop transitions, 7 changer transitions 0/77 dead transitions. [2021-10-15 19:54:03,301 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 77 transitions, 191 flow [2021-10-15 19:54:03,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:54:03,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:54:03,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2021-10-15 19:54:03,304 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8090452261306532 [2021-10-15 19:54:03,305 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2021-10-15 19:54:03,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2021-10-15 19:54:03,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:54:03,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2021-10-15 19:54:03,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states 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 19:54:03,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states 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 19:54:03,312 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states 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 19:54:03,312 INFO L186 Difference]: Start difference. First operand has 59 places, 75 transitions, 157 flow. Second operand 3 states and 483 transitions. [2021-10-15 19:54:03,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 77 transitions, 191 flow [2021-10-15 19:54:03,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 77 transitions, 186 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-15 19:54:03,316 INFO L242 Difference]: Finished difference. Result has 60 places, 76 transitions, 190 flow [2021-10-15 19:54:03,316 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=60, PETRI_TRANSITIONS=76} [2021-10-15 19:54:03,317 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, -69 predicate places. [2021-10-15 19:54:03,317 INFO L470 AbstractCegarLoop]: Abstraction has has 60 places, 76 transitions, 190 flow [2021-10-15 19:54:03,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states 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 19:54:03,318 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:54:03,318 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:54:03,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-15 19:54:03,319 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 19:54:03,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:54:03,320 INFO L82 PathProgramCache]: Analyzing trace with hash -989359546, now seen corresponding path program 1 times [2021-10-15 19:54:03,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:54:03,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977092144] [2021-10-15 19:54:03,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:54:03,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:54:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:54:03,449 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 19:54:03,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:54:03,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977092144] [2021-10-15 19:54:03,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977092144] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:54:03,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:54:03,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:54:03,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205313636] [2021-10-15 19:54:03,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:54:03,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:54:03,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:54:03,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:54:03,462 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 199 [2021-10-15 19:54:03,471 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 76 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states 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 19:54:03,471 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:54:03,471 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 199 [2021-10-15 19:54:03,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:54:03,566 INFO L129 PetriNetUnfolder]: 55/195 cut-off events. [2021-10-15 19:54:03,566 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-10-15 19:54:03,567 INFO L84 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 195 events. 55/195 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 391 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 249. Up to 16 conditions per place. [2021-10-15 19:54:03,568 INFO L132 encePairwiseOnDemand]: 191/199 looper letters, 12 selfloop transitions, 6 changer transitions 0/82 dead transitions. [2021-10-15 19:54:03,569 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 82 transitions, 242 flow [2021-10-15 19:54:03,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:54:03,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:54:03,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 644 transitions. [2021-10-15 19:54:03,573 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8090452261306532 [2021-10-15 19:54:03,573 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 644 transitions. [2021-10-15 19:54:03,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 644 transitions. [2021-10-15 19:54:03,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:54:03,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 644 transitions. [2021-10-15 19:54:03,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states 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 19:54:03,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states 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 19:54:03,582 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states 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 19:54:03,582 INFO L186 Difference]: Start difference. First operand has 60 places, 76 transitions, 190 flow. Second operand 4 states and 644 transitions. [2021-10-15 19:54:03,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 82 transitions, 242 flow [2021-10-15 19:54:03,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 82 transitions, 226 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:54:03,587 INFO L242 Difference]: Finished difference. Result has 63 places, 80 transitions, 218 flow [2021-10-15 19:54:03,587 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=63, PETRI_TRANSITIONS=80} [2021-10-15 19:54:03,588 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, -66 predicate places. [2021-10-15 19:54:03,588 INFO L470 AbstractCegarLoop]: Abstraction has has 63 places, 80 transitions, 218 flow [2021-10-15 19:54:03,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states 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 19:54:03,589 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:54:03,589 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:54:03,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-15 19:54:03,590 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 19:54:03,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:54:03,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1690424124, now seen corresponding path program 1 times [2021-10-15 19:54:03,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:54:03,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165412385] [2021-10-15 19:54:03,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:54:03,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:54:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:54:03,694 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 19:54:03,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:54:03,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165412385] [2021-10-15 19:54:03,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165412385] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:54:03,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:54:03,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:54:03,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325490064] [2021-10-15 19:54:03,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:54:03,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:54:03,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:54:03,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:54:03,712 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 199 [2021-10-15 19:54:03,714 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 80 transitions, 218 flow. Second operand has 5 states, 5 states have (on average 159.8) internal successors, (799), 5 states have internal predecessors, (799), 0 states have call successors, (0), 0 states 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 19:54:03,715 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:54:03,715 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 199 [2021-10-15 19:54:03,715 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:54:03,934 INFO L129 PetriNetUnfolder]: 212/738 cut-off events. [2021-10-15 19:54:03,934 INFO L130 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2021-10-15 19:54:03,937 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1052 conditions, 738 events. 212/738 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3682 event pairs, 0 based on Foata normal form. 0/607 useless extension candidates. Maximal degree in co-relation 1045. Up to 72 conditions per place. [2021-10-15 19:54:03,942 INFO L132 encePairwiseOnDemand]: 190/199 looper letters, 29 selfloop transitions, 18 changer transitions 0/114 dead transitions. [2021-10-15 19:54:03,942 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 114 transitions, 390 flow [2021-10-15 19:54:03,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 19:54:03,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-15 19:54:03,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1322 transitions. [2021-10-15 19:54:03,948 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8304020100502513 [2021-10-15 19:54:03,949 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1322 transitions. [2021-10-15 19:54:03,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1322 transitions. [2021-10-15 19:54:03,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:54:03,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1322 transitions. [2021-10-15 19:54:03,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 165.25) internal successors, (1322), 8 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states 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 19:54:03,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 199.0) internal successors, (1791), 9 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states 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 19:54:03,961 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 199.0) internal successors, (1791), 9 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states 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 19:54:03,961 INFO L186 Difference]: Start difference. First operand has 63 places, 80 transitions, 218 flow. Second operand 8 states and 1322 transitions. [2021-10-15 19:54:03,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 114 transitions, 390 flow [2021-10-15 19:54:03,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 114 transitions, 386 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:54:03,973 INFO L242 Difference]: Finished difference. Result has 75 places, 97 transitions, 347 flow [2021-10-15 19:54:03,974 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=347, PETRI_PLACES=75, PETRI_TRANSITIONS=97} [2021-10-15 19:54:03,974 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, -54 predicate places. [2021-10-15 19:54:03,974 INFO L470 AbstractCegarLoop]: Abstraction has has 75 places, 97 transitions, 347 flow [2021-10-15 19:54:03,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.8) internal successors, (799), 5 states have internal predecessors, (799), 0 states have call successors, (0), 0 states 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 19:54:03,976 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:54:03,976 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:54:03,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-15 19:54:03,976 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 19:54:03,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:54:03,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1690580660, now seen corresponding path program 1 times [2021-10-15 19:54:03,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:54:03,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418732684] [2021-10-15 19:54:03,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:54:03,978 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:54:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:54:04,073 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 19:54:04,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:54:04,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418732684] [2021-10-15 19:54:04,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418732684] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:54:04,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:54:04,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:54:04,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315490867] [2021-10-15 19:54:04,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:54:04,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:54:04,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:54:04,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:54:04,090 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 199 [2021-10-15 19:54:04,091 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 97 transitions, 347 flow. Second operand has 5 states, 5 states have (on average 144.6) internal successors, (723), 5 states have internal predecessors, (723), 0 states have call successors, (0), 0 states 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 19:54:04,091 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:54:04,091 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 199 [2021-10-15 19:54:04,091 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:54:04,371 INFO L129 PetriNetUnfolder]: 414/1458 cut-off events. [2021-10-15 19:54:04,371 INFO L130 PetriNetUnfolder]: For 557/557 co-relation queries the response was YES. [2021-10-15 19:54:04,378 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2502 conditions, 1458 events. 414/1458 cut-off events. For 557/557 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 8304 event pairs, 0 based on Foata normal form. 0/1229 useless extension candidates. Maximal degree in co-relation 2490. Up to 148 conditions per place. [2021-10-15 19:54:04,388 INFO L132 encePairwiseOnDemand]: 187/199 looper letters, 52 selfloop transitions, 37 changer transitions 0/157 dead transitions. [2021-10-15 19:54:04,388 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 157 transitions, 805 flow [2021-10-15 19:54:04,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-15 19:54:04,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-15 19:54:04,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1345 transitions. [2021-10-15 19:54:04,395 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7509771077610273 [2021-10-15 19:54:04,395 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1345 transitions. [2021-10-15 19:54:04,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1345 transitions. [2021-10-15 19:54:04,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:54:04,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1345 transitions. [2021-10-15 19:54:04,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 149.44444444444446) internal successors, (1345), 9 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states 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 19:54:04,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 199.0) internal successors, (1990), 10 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states 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 19:54:04,412 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 199.0) internal successors, (1990), 10 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states 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 19:54:04,412 INFO L186 Difference]: Start difference. First operand has 75 places, 97 transitions, 347 flow. Second operand 9 states and 1345 transitions. [2021-10-15 19:54:04,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 157 transitions, 805 flow [2021-10-15 19:54:04,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 157 transitions, 805 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:54:04,430 INFO L242 Difference]: Finished difference. Result has 88 places, 128 transitions, 624 flow [2021-10-15 19:54:04,431 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=624, PETRI_PLACES=88, PETRI_TRANSITIONS=128} [2021-10-15 19:54:04,432 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, -41 predicate places. [2021-10-15 19:54:04,433 INFO L470 AbstractCegarLoop]: Abstraction has has 88 places, 128 transitions, 624 flow [2021-10-15 19:54:04,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 144.6) internal successors, (723), 5 states have internal predecessors, (723), 0 states have call successors, (0), 0 states 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 19:54:04,434 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:54:04,434 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:54:04,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-15 19:54:04,434 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 19:54:04,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:54:04,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1651164780, now seen corresponding path program 1 times [2021-10-15 19:54:04,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:54:04,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844718631] [2021-10-15 19:54:04,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:54:04,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:54:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:54:04,536 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 19:54:04,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:54:04,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844718631] [2021-10-15 19:54:04,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844718631] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:54:04,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:54:04,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:54:04,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396705947] [2021-10-15 19:54:04,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:54:04,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:54:04,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:54:04,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:54:04,542 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 199 [2021-10-15 19:54:04,544 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 128 transitions, 624 flow. Second operand has 5 states, 5 states have (on average 145.2) internal successors, (726), 5 states have internal predecessors, (726), 0 states have call successors, (0), 0 states 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 19:54:04,544 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:54:04,545 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 199 [2021-10-15 19:54:04,545 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:54:04,792 INFO L129 PetriNetUnfolder]: 353/1464 cut-off events. [2021-10-15 19:54:04,792 INFO L130 PetriNetUnfolder]: For 597/597 co-relation queries the response was YES. [2021-10-15 19:54:04,797 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2694 conditions, 1464 events. 353/1464 cut-off events. For 597/597 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 8963 event pairs, 0 based on Foata normal form. 28/1282 useless extension candidates. Maximal degree in co-relation 2677. Up to 175 conditions per place. [2021-10-15 19:54:04,803 INFO L132 encePairwiseOnDemand]: 187/199 looper letters, 22 selfloop transitions, 12 changer transitions 0/134 dead transitions. [2021-10-15 19:54:04,804 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 134 transitions, 688 flow [2021-10-15 19:54:04,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:54:04,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:54:04,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 891 transitions. [2021-10-15 19:54:04,808 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7462311557788944 [2021-10-15 19:54:04,808 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 891 transitions. [2021-10-15 19:54:04,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 891 transitions. [2021-10-15 19:54:04,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:54:04,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 891 transitions. [2021-10-15 19:54:04,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 148.5) internal successors, (891), 6 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 19:54:04,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 199.0) internal successors, (1393), 7 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states 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 19:54:04,818 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 199.0) internal successors, (1393), 7 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states 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 19:54:04,819 INFO L186 Difference]: Start difference. First operand has 88 places, 128 transitions, 624 flow. Second operand 6 states and 891 transitions. [2021-10-15 19:54:04,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 134 transitions, 688 flow [2021-10-15 19:54:04,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 134 transitions, 682 flow, removed 3 selfloop flow, removed 0 redundant places. [2021-10-15 19:54:04,836 INFO L242 Difference]: Finished difference. Result has 97 places, 134 transitions, 685 flow [2021-10-15 19:54:04,837 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=685, PETRI_PLACES=97, PETRI_TRANSITIONS=134} [2021-10-15 19:54:04,837 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, -32 predicate places. [2021-10-15 19:54:04,837 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 134 transitions, 685 flow [2021-10-15 19:54:04,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.2) internal successors, (726), 5 states have internal predecessors, (726), 0 states have call successors, (0), 0 states 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 19:54:04,838 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:54:04,838 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:54:04,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-15 19:54:04,839 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 19:54:04,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:54:04,840 INFO L82 PathProgramCache]: Analyzing trace with hash -381020824, now seen corresponding path program 1 times [2021-10-15 19:54:04,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:54:04,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532606633] [2021-10-15 19:54:04,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:54:04,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:54:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:54:04,917 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 19:54:04,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:54:04,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532606633] [2021-10-15 19:54:04,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532606633] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:54:04,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:54:04,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:54:04,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552511478] [2021-10-15 19:54:04,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:54:04,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:54:04,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:54:04,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:54:04,924 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 199 [2021-10-15 19:54:04,925 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 134 transitions, 685 flow. Second operand has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states 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 19:54:04,925 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:54:04,925 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 199 [2021-10-15 19:54:04,925 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:54:05,215 INFO L129 PetriNetUnfolder]: 392/1724 cut-off events. [2021-10-15 19:54:05,215 INFO L130 PetriNetUnfolder]: For 764/764 co-relation queries the response was YES. [2021-10-15 19:54:05,222 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3496 conditions, 1724 events. 392/1724 cut-off events. For 764/764 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 11285 event pairs, 0 based on Foata normal form. 12/1500 useless extension candidates. Maximal degree in co-relation 3475. Up to 198 conditions per place. [2021-10-15 19:54:05,231 INFO L132 encePairwiseOnDemand]: 195/199 looper letters, 9 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2021-10-15 19:54:05,231 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 136 transitions, 713 flow [2021-10-15 19:54:05,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:54:05,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:54:05,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 526 transitions. [2021-10-15 19:54:05,234 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.88107202680067 [2021-10-15 19:54:05,235 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 526 transitions. [2021-10-15 19:54:05,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 526 transitions. [2021-10-15 19:54:05,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:54:05,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 526 transitions. [2021-10-15 19:54:05,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states 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 19:54:05,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states 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 19:54:05,240 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states 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 19:54:05,241 INFO L186 Difference]: Start difference. First operand has 97 places, 134 transitions, 685 flow. Second operand 3 states and 526 transitions. [2021-10-15 19:54:05,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 136 transitions, 713 flow [2021-10-15 19:54:05,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 136 transitions, 713 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:54:05,258 INFO L242 Difference]: Finished difference. Result has 100 places, 135 transitions, 699 flow [2021-10-15 19:54:05,259 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=699, PETRI_PLACES=100, PETRI_TRANSITIONS=135} [2021-10-15 19:54:05,259 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, -29 predicate places. [2021-10-15 19:54:05,259 INFO L470 AbstractCegarLoop]: Abstraction has has 100 places, 135 transitions, 699 flow [2021-10-15 19:54:05,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states 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 19:54:05,260 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:54:05,261 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:54:05,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-15 19:54:05,261 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 19:54:05,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:54:05,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1855499608, now seen corresponding path program 1 times [2021-10-15 19:54:05,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:54:05,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453763830] [2021-10-15 19:54:05,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:54:05,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:54:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:54:05,370 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 19:54:05,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:54:05,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453763830] [2021-10-15 19:54:05,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453763830] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:54:05,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:54:05,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-15 19:54:05,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422120462] [2021-10-15 19:54:05,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 19:54:05,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:54:05,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 19:54:05,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:54:05,384 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 199 [2021-10-15 19:54:05,386 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 135 transitions, 699 flow. Second operand has 8 states, 8 states have (on average 140.5) internal successors, (1124), 8 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states 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 19:54:05,386 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:54:05,387 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 199 [2021-10-15 19:54:05,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:54:06,432 INFO L129 PetriNetUnfolder]: 830/3909 cut-off events. [2021-10-15 19:54:06,432 INFO L130 PetriNetUnfolder]: For 2480/2480 co-relation queries the response was YES. [2021-10-15 19:54:06,449 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8134 conditions, 3909 events. 830/3909 cut-off events. For 2480/2480 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 32432 event pairs, 3 based on Foata normal form. 58/3381 useless extension candidates. Maximal degree in co-relation 8111. Up to 498 conditions per place. [2021-10-15 19:54:06,467 INFO L132 encePairwiseOnDemand]: 182/199 looper letters, 59 selfloop transitions, 61 changer transitions 0/200 dead transitions. [2021-10-15 19:54:06,467 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 200 transitions, 1357 flow [2021-10-15 19:54:06,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-15 19:54:06,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-15 19:54:06,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2724 transitions. [2021-10-15 19:54:06,478 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7204443268976461 [2021-10-15 19:54:06,478 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2724 transitions. [2021-10-15 19:54:06,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2724 transitions. [2021-10-15 19:54:06,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:54:06,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2724 transitions. [2021-10-15 19:54:06,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 143.3684210526316) internal successors, (2724), 19 states have internal predecessors, (2724), 0 states have call successors, (0), 0 states 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 19:54:06,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 199.0) internal successors, (3980), 20 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states 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 19:54:06,504 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 199.0) internal successors, (3980), 20 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states 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 19:54:06,504 INFO L186 Difference]: Start difference. First operand has 100 places, 135 transitions, 699 flow. Second operand 19 states and 2724 transitions. [2021-10-15 19:54:06,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 200 transitions, 1357 flow [2021-10-15 19:54:06,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 200 transitions, 1353 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-10-15 19:54:06,534 INFO L242 Difference]: Finished difference. Result has 123 places, 180 transitions, 1234 flow [2021-10-15 19:54:06,535 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1234, PETRI_PLACES=123, PETRI_TRANSITIONS=180} [2021-10-15 19:54:06,535 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, -6 predicate places. [2021-10-15 19:54:06,535 INFO L470 AbstractCegarLoop]: Abstraction has has 123 places, 180 transitions, 1234 flow [2021-10-15 19:54:06,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.5) internal successors, (1124), 8 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states 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 19:54:06,536 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:54:06,537 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, 1, 1] [2021-10-15 19:54:06,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-15 19:54:06,537 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 19:54:06,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:54:06,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1842447762, now seen corresponding path program 1 times [2021-10-15 19:54:06,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:54:06,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498510761] [2021-10-15 19:54:06,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:54:06,541 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:54:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:54:06,703 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:54:06,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:54:06,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498510761] [2021-10-15 19:54:06,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498510761] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:54:06,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:54:06,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:54:06,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10782031] [2021-10-15 19:54:06,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:54:06,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:54:06,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:54:06,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:54:06,707 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 199 [2021-10-15 19:54:06,708 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 180 transitions, 1234 flow. Second operand has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states 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 19:54:06,708 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:54:06,708 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 199 [2021-10-15 19:54:06,708 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:54:07,379 INFO L129 PetriNetUnfolder]: 810/3916 cut-off events. [2021-10-15 19:54:07,379 INFO L130 PetriNetUnfolder]: For 2851/2851 co-relation queries the response was YES. [2021-10-15 19:54:07,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8202 conditions, 3916 events. 810/3916 cut-off events. For 2851/2851 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 32817 event pairs, 5 based on Foata normal form. 44/3382 useless extension candidates. Maximal degree in co-relation 8173. Up to 564 conditions per place. [2021-10-15 19:54:07,414 INFO L132 encePairwiseOnDemand]: 192/199 looper letters, 9 selfloop transitions, 4 changer transitions 0/183 dead transitions. [2021-10-15 19:54:07,414 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 183 transitions, 1270 flow [2021-10-15 19:54:07,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:54:07,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:54:07,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 528 transitions. [2021-10-15 19:54:07,417 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8844221105527639 [2021-10-15 19:54:07,417 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 528 transitions. [2021-10-15 19:54:07,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 528 transitions. [2021-10-15 19:54:07,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:54:07,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 528 transitions. [2021-10-15 19:54:07,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states 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 19:54:07,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states 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 19:54:07,422 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states 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 19:54:07,422 INFO L186 Difference]: Start difference. First operand has 123 places, 180 transitions, 1234 flow. Second operand 3 states and 528 transitions. [2021-10-15 19:54:07,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 183 transitions, 1270 flow [2021-10-15 19:54:07,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 183 transitions, 1215 flow, removed 26 selfloop flow, removed 2 redundant places. [2021-10-15 19:54:07,456 INFO L242 Difference]: Finished difference. Result has 125 places, 183 transitions, 1217 flow [2021-10-15 19:54:07,456 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=1179, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1217, PETRI_PLACES=125, PETRI_TRANSITIONS=183} [2021-10-15 19:54:07,456 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, -4 predicate places. [2021-10-15 19:54:07,456 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 183 transitions, 1217 flow [2021-10-15 19:54:07,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states 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 19:54:07,457 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:54:07,457 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, 1, 1] [2021-10-15 19:54:07,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-15 19:54:07,458 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 19:54:07,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:54:07,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1441402284, now seen corresponding path program 1 times [2021-10-15 19:54:07,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:54:07,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12068548] [2021-10-15 19:54:07,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:54:07,459 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:54:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:54:07,541 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-15 19:54:07,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:54:07,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12068548] [2021-10-15 19:54:07,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12068548] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:54:07,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:54:07,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-15 19:54:07,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238261778] [2021-10-15 19:54:07,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 19:54:07,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:54:07,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 19:54:07,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:54:07,546 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 199 [2021-10-15 19:54:07,547 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 183 transitions, 1217 flow. Second operand has 8 states, 8 states have (on average 144.375) internal successors, (1155), 8 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states 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 19:54:07,547 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:54:07,548 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 199 [2021-10-15 19:54:07,548 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:54:08,387 INFO L129 PetriNetUnfolder]: 682/3406 cut-off events. [2021-10-15 19:54:08,387 INFO L130 PetriNetUnfolder]: For 3076/3076 co-relation queries the response was YES. [2021-10-15 19:54:08,401 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7510 conditions, 3406 events. 682/3406 cut-off events. For 3076/3076 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 27309 event pairs, 5 based on Foata normal form. 2/2904 useless extension candidates. Maximal degree in co-relation 7480. Up to 516 conditions per place. [2021-10-15 19:54:08,406 INFO L132 encePairwiseOnDemand]: 186/199 looper letters, 0 selfloop transitions, 0 changer transitions 182/182 dead transitions. [2021-10-15 19:54:08,406 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 182 transitions, 1368 flow [2021-10-15 19:54:08,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-15 19:54:08,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-15 19:54:08,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2194 transitions. [2021-10-15 19:54:08,414 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7350083752093802 [2021-10-15 19:54:08,414 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2194 transitions. [2021-10-15 19:54:08,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2194 transitions. [2021-10-15 19:54:08,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:54:08,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2194 transitions. [2021-10-15 19:54:08,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 146.26666666666668) internal successors, (2194), 15 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states 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 19:54:08,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 199.0) internal successors, (3184), 16 states have internal predecessors, (3184), 0 states have call successors, (0), 0 states 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 19:54:08,431 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 199.0) internal successors, (3184), 16 states have internal predecessors, (3184), 0 states have call successors, (0), 0 states 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 19:54:08,431 INFO L186 Difference]: Start difference. First operand has 125 places, 183 transitions, 1217 flow. Second operand 15 states and 2194 transitions. [2021-10-15 19:54:08,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 182 transitions, 1368 flow [2021-10-15 19:54:08,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 182 transitions, 1307 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-10-15 19:54:08,456 INFO L242 Difference]: Finished difference. Result has 129 places, 0 transitions, 0 flow [2021-10-15 19:54:08,456 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=980, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=129, PETRI_TRANSITIONS=0} [2021-10-15 19:54:08,457 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 0 predicate places. [2021-10-15 19:54:08,457 INFO L470 AbstractCegarLoop]: Abstraction has has 129 places, 0 transitions, 0 flow [2021-10-15 19:54:08,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 144.375) internal successors, (1155), 8 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states 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 19:54:08,460 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:54:08,461 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:54:08,461 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:54:08,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-15 19:54:08,466 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:54:08,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:54:08 BoogieIcfgContainer [2021-10-15 19:54:08,472 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:54:08,472 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:54:08,473 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:54:08,473 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:54:08,474 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:54:01" (3/4) ... [2021-10-15 19:54:08,477 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:54:08,496 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 41 nodes and edges [2021-10-15 19:54:08,497 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-15 19:54:08,498 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-15 19:54:08,500 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-15 19:54:08,501 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-15 19:54:08,503 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:54:08,504 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:54:08,593 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62adbf7a-bab1-4466-9646-7d12010e911b/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:54:08,593 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:54:08,595 INFO L168 Benchmark]: Toolchain (without parser) took 8698.89 ms. Allocated memory was 111.1 MB in the beginning and 230.7 MB in the end (delta: 119.5 MB). Free memory was 76.8 MB in the beginning and 103.1 MB in the end (delta: -26.3 MB). Peak memory consumption was 94.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:54:08,595 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 73.4 MB. Free memory was 47.9 MB in the beginning and 47.8 MB in the end (delta: 21.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:54:08,596 INFO L168 Benchmark]: CACSL2BoogieTranslator took 553.07 ms. Allocated memory is still 111.1 MB. Free memory was 76.8 MB in the beginning and 79.5 MB in the end (delta: -2.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:54:08,596 INFO L168 Benchmark]: Boogie Procedure Inliner took 123.00 ms. Allocated memory is still 111.1 MB. Free memory was 79.5 MB in the beginning and 75.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:54:08,596 INFO L168 Benchmark]: Boogie Preprocessor took 53.62 ms. Allocated memory is still 111.1 MB. Free memory was 75.3 MB in the beginning and 72.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:54:08,597 INFO L168 Benchmark]: RCFGBuilder took 1189.49 ms. Allocated memory is still 111.1 MB. Free memory was 72.4 MB in the beginning and 75.5 MB in the end (delta: -3.1 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. [2021-10-15 19:54:08,597 INFO L168 Benchmark]: TraceAbstraction took 6651.96 ms. Allocated memory was 111.1 MB in the beginning and 230.7 MB in the end (delta: 119.5 MB). Free memory was 75.5 MB in the beginning and 114.6 MB in the end (delta: -39.1 MB). Peak memory consumption was 143.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:54:08,598 INFO L168 Benchmark]: Witness Printer took 120.92 ms. Allocated memory is still 230.7 MB. Free memory was 114.6 MB in the beginning and 103.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:54:08,600 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 73.4 MB. Free memory was 47.9 MB in the beginning and 47.8 MB in the end (delta: 21.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 553.07 ms. Allocated memory is still 111.1 MB. Free memory was 76.8 MB in the beginning and 79.5 MB in the end (delta: -2.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 123.00 ms. Allocated memory is still 111.1 MB. Free memory was 79.5 MB in the beginning and 75.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.62 ms. Allocated memory is still 111.1 MB. Free memory was 75.3 MB in the beginning and 72.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1189.49 ms. Allocated memory is still 111.1 MB. Free memory was 72.4 MB in the beginning and 75.5 MB in the end (delta: -3.1 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6651.96 ms. Allocated memory was 111.1 MB in the beginning and 230.7 MB in the end (delta: 119.5 MB). Free memory was 75.5 MB in the beginning and 114.6 MB in the end (delta: -39.1 MB). Peak memory consumption was 143.1 MB. Max. memory is 16.1 GB. * Witness Printer took 120.92 ms. Allocated memory is still 230.7 MB. Free memory was 114.6 MB in the beginning and 103.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 420]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 420]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 420]: 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, 133 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 10.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6583.0ms, OverallIterations: 12, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 4712.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 82.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 132 SDtfs, 242 SDslu, 224 SDs, 0 SdLazy, 390 SolverSat, 74 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 720.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 615.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1234occurred in iteration=10, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 81.4ms SsaConstructionTime, 385.8ms SatisfiabilityAnalysisTime, 975.7ms InterpolantComputationTime, 405 NumberOfCodeBlocks, 405 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 393 ConstructedInterpolants, 0 QuantifiedInterpolants, 765 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 28/28 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 19:54:08,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62adbf7a-bab1-4466-9646-7d12010e911b/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...